HP 1098 Service Manual

October 1998 Edition

HP LaserJet Printer Family
Paper Specification Guide

HP LaserJet Printer Family

Paper Specification Guide ____

© Copyright Hewlett-Packard
Company, 1998

All Rights Reserved.
Reproduction, adaptation, or
translation without prior written
permission is prohibited, except
as allowed under the copyright
laws.

Publication number: 5040-9072
First edition, October 1998

Warranty

The information contained in
this document is subject to
change without notice.

Hewlett-Packard makes no
warranty of any kind with
respect to this information.
HEWLETT-PACKARD
SPECIFICALLY DISCLAIMS
THE IMPLIED WARRANTY OF
MERCHANTABILITY AND
FITNESS FOR A PARTICULAR
PURPOSE.

Hewlett-Packard shall not be
liable for any direct, indirect,
incidental, consequential, or
other damage alleged in
connection with the furnishing or
use of this information.

Hewlett-Pack ard Company
11311 Chinden Boulevard
Boise, Idaho 83714 U.S.A.

Contents

1 Introduction

About the HP LaserJet printer family. . . . . . . . . . . . . . . . . . . . . . . . . 7

Basic theory of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Supported HP LaserJet products . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Alternate sources of information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2 Guidelines and specifications for selecting media

Important notice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Recommendations to the customer. . . . . . . . . . . . . . . . . . . . . . . . . . 9

Buy media that meets specifications. . . . . . . . . . . . . . . . . . . . . 10

Test small amounts of media . . . . . . . . . . . . . . . . . . . . . . . . . . 10

General guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Quality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Basis weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Furnish (composition) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Curl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Finish (smoothness) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Felt side vs. wire side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Paper specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

U.S. paper grades: Basic sizes and basis weights . . . . . . . . . . . . . 16

Weight Equivalence Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Comparisons of paper smoothness. . . . . . . . . . . . . . . . . . . . . . . . . 18

Recycled paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Archival paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Colored paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Paper with cutouts or perforations . . . . . . . . . . . . . . . . . . . . . . 20

Preprinted forms and letterhead . . . . . . . . . . . . . . . . . . . . . . . . 21

Envelope specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Envelope construction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Adhesive label specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Label stock facts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Overhead transparency specifications . . . . . . . . . . . . . . . . . . . . . . 30

Types of media to avoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

EN

3 Purchasing, shipping, and storing media

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Purchasing media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Overhead transparencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Shipping media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Contents 5

Storing media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Environmental considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4 Troubleshooting

Factors contributing to print problems. . . . . . . . . . . . . . . . . . . . . . . 39

Two-sided printing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Automatic duplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Manual duplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Indications of paper problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

High rates of jams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

High rates of multiple feeds . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Post-image curl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Indications of envelope problems . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Gray background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

High rates of jams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Wrinkling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

A Paper basis weights

B Postal customer recommendations statement

C Glossary

6 Contents

Index

EN

1

Introduction

About the HP LaserJet printer family

HP LaserJet printers quietly produce documents of excellent print
quality at speeds ranging from four to seventeen pages per minute.
You can print on a variety of print media, including paper, envelopes,
labels, and overhead transparencies. (Envelopes and labels are not
supported on most HP Color LaserJet printers.) Many printer settings
are easily selectable from the printer control panel.

Basic theory of operation

HP LaserJet printers use laser and electrophotographic technologies.
In this process, a scanning laser beam writes an electrostatic image
onto a rotating photosensitive drum. As this image passes the
developing station, a dry, powdery toner is attracted to the imaged
areas. In an HP Color LaserJet printer, this process is repeated for
each of the four toner colors. The de veloped image then advances to
the transfer station where the drum contacts the media and the toner
image is electrostatically transferred onto the paper . After transf er , the
media passes through the fuser where heat is applied and the toner
fuses (melts) onto the media. The media is then delivered to the
output bin, ready for use.

EN

To create the printed image, the print media must be transported
through the printer, charged electrostatically, and heated. This is why
media properties such as electrical resistivity, caliper, finish, moisture
content, and stiffness can affect the print quality and media-handling
performance of your HP LaserJet printer.

Chapter 1 – Introduction

7

Supported HP LaserJet products

This document provides useful guidelines for selecting media that will
give you the best performance with most HP LaserJet printers and
the HP LaserJet Companion.

This document does not support HP LaserJet 2686A, HP LaserJet
Plus, HP LaserJet 500, or HP LaserJet 2000 printers. See the user
guide for each printer for information about print media specifications.

Alternate sources of information

The media manufacturer and vendor can pro vide you with inf ormation
about the suitability of media for an HP LaserJet printer or the
HP LaserJet Companion.

If you hav e tried the suggestions outlined in this document and in your
user guide and you still need assistance, call the dealer from whom
you purchased your printer. You can also obtain support through the
worldwide network of HP Sales and Service Offices. (See the sales
and service listings located in any HP LaserJet printer user guide.)

In the United States, HP offers support through the Customer Care
Center. Call [phone] from 6 am to 10 pm MST, Monday
through Friday, or from 9 am to 4 pm MST, Saturday.

8

Supported HP LaserJet products

EN

Guidelines and

2

specifications for
selecting media

Important notice

Properties of media are subject to change by manufacturers.
Hewlett-Packard has no control over such changes. The customer
assumes all responsibility for the quality and performance of media.
Although testing media helps to characterize its performance,
long-term satisfaction requires process quality control by the
manufacturer and proper handling and storage by the customer.

Recommendations to the customer

HP LaserJet printers are designed to be flexible in the types of print
media they can use. Howe v er , it is advisable to use quality media and,
specifically, HP LaserJet or HP Multipurpose paper since it has been
designed to work with HP LaserJet printers. If HP paper is available in
your area, it is recommended that you use it.

Note HP recommends testing media prior to purchasing it in large quantities.

EN

Chapter 2 – Guidelines and specifications for selecting media

9

Buy media that meets specifications

For best performance from your HP LaserJet printer, select
high-quality print media that meets the guidelines and specifications
in this document.

Test small amounts of media

If you are planning a large purchase of media, first print a small
quantity in your printing environment. Subject the media to the
temperature, humidity, and printing applications in which the media
will be operating. HP recommends that you ask your media v endor f or
a guarantee that their media will perform satisfactorily in your
HP LaserJet printer and that the vendor will assume responsibility for
the replacement of any media that will not print acceptably.

General guidelines

This section summarizes general guidelines for choosing print media.

Quality

HP LaserJet printers work best with high-quality media. Quality media
for HP LaserJet printers are characterized by uniform physical
properties, freedom from dust and lint, accurate cutting to size, and
proper packaging. Proper packaging protects media from moisture
and physical damage.

10

General guidelines

Avoid media with curled or bent edges , spots, dust or lint, wrinkling, or
inaccurate size. These characteristics can cause misfeeding,
jamming, premature wear of printer parts, or unsatisfactory print
quality in the printer.

Size

Table 2-1 lists the names and dimensions of the most commonly used
paper and envelopes. See the user documentation that came with
your printer for specific information on the media supported by your
HP LaserJet printer. Use only paper and envelopes that are
unsupported by your printer.

EN

Table 2-1. Common paper and envelope sizes

Type of media Name Dimensions

Paper Letter 8.5 by 11 in

(216 by 279 mm)

Paper Legal 8.5 by 14 in

(216 by 356 mm)

Paper Executive 7.25 by 10.5 in

(184 by 267 mm)

Paper Tabloid/Ledger 11 by 17 in

(279 by 432 mm)

Paper A3 297 by 420 mm

(11.7 by 16.5 in)

Paper A4 210 by 297 mm

(8.3 by 11.7 in)

Paper A5 148 by 210 mm

(5.8 by 8.3 in)

Paper B4 (JIS) 257 by 364 mm

(10.1 by 14.3 in)

Paper B5 (JIS) 182 by 257 mm

(7.2 by 10 in)

Paper J Postcard (hagaki) 100 by 148 mm

(3.9 by 5.8 in)

Paper J Double Postcard

(oufuku hagaki)

Envelope Commercial #10 105 by 241 mm

Envelope #7 3/4 (Monarch) 98 by 191 mm

Envelope DL 110 by 220 mm

Envelope C5 162 by 229 mm

Envelope B5 176 by 250 mm

148 by 200 mm
(5.8 by 7.9 in)

(4.1 by 9.5 in)

(3.9 by 7.5 in)

(4.3 by 8.7 in)

(6.4 by 9.0 in)

(6.9 by 9.8 in)

EN

Chapter 2 – Guidelines and specifications for selecting media

11

Basis weight

Basis weight (also called grammage) is an important characteristic of
paper. Paper that is too light or too heavy can cause misfeeds,
mis-stacking, paper jams, poor print quality, or excessive mechanical
wear in the printer.

CAUTION Avoid using extremely heavy paper. Use paper that falls within your

printer’s specified basis weight, as shown in appendix A or in the user
documentation that came with your printer.

Furnish (composition)

Furnish is the mixture of various materials used to make the paper
stock. For optimum performance of your HP LaserJet printer, use
paper made from 100 percent chemical wood pulp and/or cotton fiber.
Recycled paper, made with no more than 5 percent groundwood, is
also acceptable. To ensure that paper of a special fiber composition
will work correctly in your printer, test it before purchasing large
quantities. Other components in paper are sizing, fillers, and
pigments.

Note Avoid using coated paper or paper containing materials that melt,

vaporize, offset, discolor, or release hazardous emissions when
exposed to 205° C (401° F) for 0.1 second (0.2 second for
HP Color LaserJet printers).

12

General guidelines

Curl

Curl is curvature in a sheet of paper. It is typically measured by la ying
the sheet of paper on a flat surface, with the corners up, and
measuring the height of the corners. There are two types of curl:

In-ream curl is the amount of curl in a sheet of paper before

z

printing. In-ream curl results from the paper-manufacturing
process or from exposure to the environment. Paper with
excessive in-ream curl might lead to feeding and print-quality
problems.

Post-image curl is the amount of curl in a sheet of paper after

z

printing. Post-image curl results from exposure to the fusing
process and paper path in the printer. Paper with excessive
post-image curl may be difficult to handle or to use in
automatic-feed photocopiers.

EN

Finish (smoothness)

Paper for laser printers should not have a heavy texture or a glossy
smoothness. Printed output on textured paper may have broken
character edges and show poor toner adhesion. On the HP Color
LaserJet printers, textured paper will cause inconsistent or blotchy
colors and may wrinkle in the fuser. Glossy-smooth paper tends to
highlight defects such as stra y toner particles, and may not hold toner .
For sharp resolution or detail, use a smooth paper.

Paper finish is typically measured using air leak methods. We
recommend a range for smoothness using the Sheffield method.
Equivalent values for other methods can be found in Figure 2-1 on
page 18.

Avoid using paper with embossed or raised surfaces because spotty
printing and misfeeding may occur. It is possible to print satisfactorily
on paper that has embossed areas in the leading edge, trailing edge,
or in areas where print will not appear on the paper; however,
misfeeding or jamming may occur.

Felt side vs. wire side

Some methods of manufacturing paper result in two-sided paper
properties. Along with other process variations, these properties can
make one side of the paper the preferred side on which to print. The
“top” side of the paper sheet, as it is formed, is known as the felt side.
The “bottom” is known as the wire side. Most manufacturers indicate
the preferred printing side on the package.

EN

Chapter 2 – Guidelines and specifications for selecting media

13

Paper specifications

Use conventional white xerographic paper for most printing. The
paper should be high quality and free of cuts, tears, grease spots,
loose particles, dust, wrinkles, voids, and curled or bent edges.
Xerographic papers, also called photocopy or xerocopy papers, are
usually made from chemical wood pulp and are characterized by a
smooth surface, controlled electrical properties, heat stability, and
cleanliness. These characteristics ensure good image transfer, fusing
without excessive curl, and reliable printer operation.

Some printing applications may require a paper with a more
prestigious look or feel. Bond papers generally hav e a watermark and
often use cotton fiber. These papers tend to have a rougher surface
and their properties might not be controlled like those of xerographic
papers. Your HP LaserJet printer will print black satisfactorily on many
of these bond papers. Using this type of paper on HP Color LaserJet
printers can degrade color print quality. However, paper
manufacturers are now making laser-grade bond papers, which have
properties optimized for laser printing.

Note For paper specifications specific to Magnetic Ink Character Recognition

(MICR) printing applications, refer to the
HP part number 5091-3857.

HP MICR User’s Guide

,

One of the most important things you can do to ensure the best
performance from your HP LaserJet printer is to select high-quality
media. It is recommended that you use HP media. If you are not using
HP media, see Table 2-2, which summarizes the specifications of
paper that provide the best performance.

Note Paper ma y meet the general specifications listed in Table 2-5 and still

not print satisfactorily because of the printing environment or other
variables over which HP has no control.

14

Paper specifications

EN

Table 2-2. Paper specifications

Description Specifications

Basis weight See appendix A or the user documentation for

your printer

Brightness 83% minimum. Recycled paper may not be as

bright
Caliper Depends on basis cut ranges
Curl In-ream: flat within 5 mm (0.2 in)
Cut edge

conditions
Electrical surface

resistivity
Electrical volume

resistivity
Finish 100 to 190 (Sheffield) for HP Color LaserJet

Finishing precision Cut sheet to within ±0.03 inch (± 0.8 mm) of

Furnish (fiber
composition)

Fusing compatibility Must not scorch, melt, offset, or release hazardous

Grain Long grain
Moisture content 4% to 6% by weight
Opacity 85% minimum
Packaging Polylaminated moisture-proof ream wrap
pH 5.5 pH minimum
Stiffness 1.6 minimum machine direction, 0.6 minimum

Wax pick 12 minimum (Dennison)

Cut with sharp blades with no visible fray and no

dust

2.0 to 15 by 10

10

ohms/in

2

(conditioned at 23° C and 50% RH)

1.2 to 15 by 10

(conditioned at 23

11

ohms/cm

°

C and 50% RH)

printers;

100 to 250 for all other HP LaserJet printers.

°

nominal and ± 0.2

square

100% chemical wood pulp and/or cotton fiber;

recycled paper with up to 5% groundwood may be

used

emissions when heated to 205° C (401° F) for

0.1 second (0.2 second for HP Color LaserJet

printers)

cross direction (Taber)

EN

Chapter 2 – Guidelines and specifications for selecting media

15

U.S. paper grades: Basic sizes and basis weights

The U.S. paper grading system has evolved from custom and usage
rather than from a technical background, resulting in similar papers
having different stated weights. For example, a 24# bond paper is
exactly the same weight as a 60# book or a 60# text or a 33# cover.
This is because basis weight is defined as the weight of 500 sheets of
paper cut to basic size. The basic size for bond, book/text, cover,
index, bristol, and tag are all different so the given weights for these
paper grades may be diff erent although the ph ysical weight is virtually
identical. Table 2-3 will help clarify these differences. Note the
difference in basic size for each grade, which affects the weight of
500 sheets of that grade.

Table 2-3. Common paper grades and basis weights

Paper grade Basic size Basic area Factor Equivalent

Bond 432 by 559 mm

Text 635 by 965 mm

Book (coated
or uncoated)

Cover 508 by 660 mm

Bristol 571 by 724 mm

Index 648 by 775 mm

Tag 610 by 910 mm

Metric weight none none 3.76

(17 by 22 in)

(25 by 38 in)
635 by 965 mm

(25 by 38 in)

(20 by 26 in)

(22.5 by 28.5
in)

(25.5 by 30.5
in)

(24 by 36 in)

2

241 m
(374.0 sq. in)

2

613 m
(950.0 sq. in)

2

613 m
(950.0 sq. in)

2

335 m
(520.0 sq. in)

414 m2
(641.25 sq. in)

502 m2
(777.75 sq. in)

2

557 m
(864.0 sq. in)

1.00 24# bond

2.54 61# text

2.54 61# book

1.39 33# cover

1.71 41# bristol

2.08 50# index

2.31 55# tag

basis weights
(example)

2

90 g/m

(

16

U.S. paper grades: Basic sizes and basis weights

EN

Weight Equivalence Table

Table 2-4 shows equivalent weights for different grades of paper.
Shaded boxes indicate a commonly a v ailab le standard weight for that
grade.

Table 2-4. Weight equivalence table

Bond wt.
(17 x 22)

16# 41# 22# 27# 33# 37#
17# 43# 24# 29# 35# 39#
20# 50# * 28# 34# 42# 46#
21# 54# 30# 36# 44# 49#
24# 60# * 33# 41# 50# 55#
27# 68# 37# 45# 55# 61#
28# 70# * 39# 49# 58# 65#
29# 74# 41# 50# 61# 68#
32# 80# * 44# 55# 67# 74#
36# 90# 50# 62# 75# 83#
39#
40# 101# 55# 68# 83# 92#
43# 110#
45# 115# 63# 77# 94# 104#
47# 119#
51# 128# 70# 86# 105# 117#
53# 134# 74# 90#
54# 137# 75# 93# 113#
58# 146#
65# 165#
66# 169# 92# 114# 138# 154#
67# 171# 94# 115#
70# 178# 98#
72# 183#

Text/
Book wt.
(25 x 38)

100# 55# 67# 82# 91#

Cover
wt.
(20 x 26)

60# 74# 90# 100#

65# 80# 97# 108#

80# 98# 120# 133#
90# 111# 135# 150#

100# 123# 150# 166#

Bristol wt.
(22.5 x 28.5)

120# 146# 162#

Index wt.
(25.5 x 30.5)

110# 122#

140# 155#

Tag wt.
(24 x 36) Metric wt.

125#

60 g/m
64 g/m
75 g/m
80 g/m
90 g/m
100 g/m
105 g/m
110 g/m
120 g/m
135 g/m
148 g/m
150 g/m
163 g/m
170 g/m
176 g/m
190 g/m
199 g/m
203 g/m
216 g/m
244 g/m
250 g/m
253 g/m
264 g/m
271 g/m

2
2
2
2
2

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

Note T e xt and book grades marked with an * actually calculate out to 51, 61,

71, and 81, but are rounded to standard book/text weights of 50, 60,
70, and 80.

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Chapter 2 – Guidelines and specifications for selecting media

17

Comparisons of paper smoothness

Smoothness typically is expressed in terms of Sheffield, Gurley , Bekk,
or Bendtsen units. HP LaserJet printers generally require a
smoothness of between 100-250 Sheffield. Figure 2-1 compares the
different types of smoothness.

Sheffield Gurley S-P-S Bekk Bendtsen

(3 PSI) (1 KG/CM

(CC by 10-2/MIN) (SEC./100 CC) (SEC/10 CC) (CC/MIN)

Figure 2-1 Interrelation among methods of air-leak smoothness

2)

18

Comparisons of paper smoothness

EN

Recycled paper

Recycled paper is a combination of printed waste paper, pre­consumer waste, and post-consumer waste. Printed waste paper is
usually washed to remove most of the inks and other contaminants . A
recycled sheet of paper may contain dark specks or appear gray or
dirty. Choose recycled paper that meets the same specifications,
except brightness, as standard paper (see Table 2-2) and that has an
appearance suitable for your needs. HP recommends that recycled
paper contain no more than 5 percent groundwood.

Archival paper

Paper used for archiving must meet the same specifications as
standard paper; however, the pH should be no less than 7.0. Some
archival demands are more stringent than others, requiring a specific
degree of alkalinity and chemical stability. Toner is chemically stable
and should last as long as the paper does. Toner can be degraded by
petroleum-based solvents or plasticizers, such as those f ound in vin yl
folders.

Avoid folding archival documents across printed areas or handling
archival documents roughly. Discuss archival requirements with your
paper supplier.

Colored paper

You can use colored paper in your HP LaserJet printer as long as
the paper meets the same specifications as standard paper
(see Table 2-2).

The HP Color LaserJet printers are optimal for printing on white
paper. You also can use an HP Color LaserJet printer to print on
colored paper that meets all the specifications listed in this guide.
However, colored paper may change the printed colors. This is
because HP Color LaserJet printers create colors by printing a
pattern of dots, overlaying and varying their spacing to produce
various colors. When these colors are printed on colored media, the
shade or color of the media will vary the shades of your printed
colors. Since the printer cannot sense what color of paper you are
using, it cannot adjust the output colors for colored paper.

EN

Chapter 2 – Guidelines and specifications for selecting media

19

Paper with cutouts or perforations

Using paper with cutouts or perforations could result in more feeding
and contamination problems with your printer.

Cutouts: A cutout is any portion of the paper that has been
removed, including binder holes, notches, and square cuts. Cutouts
can interact with paper position sensors in the printer or can result in
contamination by toner if printing at a cutout location.

Perforations: Perforations are a series of holes or slits punched
through the paper to aid in separating one piece of paper from
another. Perforations can create paper dust contamination or reduce
the stiffness of the paper so that paper buckles during feeding. These
papers often cause paper jams, misfeeds, and paper-handling
problems, and they may damage the printer.

If you must use papers with internal perforations or cutouts, follow
these guidelines:

Punch cutouts and perforations from the side to be printed on, so

z

that edge trimmings will not scratch the photosensitive drum.
Avoid printing at a cutout location or closer than 3 mm (0.125 in)

z

to the edge of a cutout. This will prevent toner from contaminating
the inside of the printer.

Cut cutouts and perforations cleanly (without burrs) to avoid

z

multiple feed, contaminants, or paper jam problems.
On most printers, avoid perforations that run across the page,

z

perpendicular to the paper path.
With an HP Color LaserJet printer, when printing on letter, A4,

z

and executive-size paper, avoid perforations that run down the
page because these paper sizes load long-edge first. When the
printer transfers paper from one set of rollers to the next, a
perforation can cause the page to bend downward and miss the
pickup point on the next roller.

20

Comparisons of paper smoothness

EN

Preprinted forms and letterhead

To avoid multiple feed and jamming problems when using preprinted
forms, embossed paper, and letterhead paper, observe the following
guidelines:

Avoid using low-temperature inks (the kind used with some types

z

of thermography).
Use forms and letterhead paper printed by offset lithography or

z

engraving.
Print forms with heat-resistant inks that will not melt, vaporize, or

z

release hazardous emissions when heated to 205° C (401° F) for

0.1 second (0.2 second for the HP Color LaserJet printers).
Typically, oxidation-set or oil-based inks meet this requirement.

When the form is preprinted, be careful not to change the

z

moisture content of the paper, and do not use materials that
change the paper’s electrical or handling properties. Seal the
forms in moisture-proof wrap to prev ent moisture changes during
storage.

Avoid processing preprinted forms with a finish or coating.

z

Avoid using heavily embossed or raised letterhead papers.

z

Avoid papers with heavily textured surfaces.

z

EN

Chapter 2 – Guidelines and specifications for selecting media

21

Envelope specifications

CAUTION Most HP Color LaserJet printers do not support envelopes. Printing

envelopes may damage the printer.
You can print many sizes and styles of envelopes on most

HP LaserJet printers by using manual feed, a multipurpose (MP) tra y,
an optional envelope tray, or an optional envelope feeder. Whichever
input method you use, envelopes should meet all specifications
discussed in this document. Your envelope vendor should pro vide you
with a satisfactory envelope that complies with the specifications
listed in Table 2-5.

See the user guide that came with your printer for detailed
instructions on printing envelopes.

Note Envelopes ma y meet the general specifications listed in Table 2-5 and

still not print satisfactorily because of the printing environment or other
variables over which HP has no control.

22

Envelope specifications

EN

Table 2-5. Envelope specifications

Description Specifications

Basis weight • 60 to 90 g/m2 (16 to 24 lb), single thickness except

HP LaserJet 4P/4PJ and 5L printers.

• 75 to 90 g/m
HP LaserJet 4P/4PJ and 5L printers. Jamming might
result if 90 g/m

• 105 g/m
4000, 5000, 8000, and 8100 printers.

Caliper 0.084 to 0.14 mm (3.3 to 5.5 mils), single layer thickness
Curl Envelopes must lay flat, with no more than 6 mm (0.25 in)

curl across the entire surface

Finishing Avoid using envelopes with adhesive exposed to the

printer. Env elopes must be f olded accurately (± 0.04 in) so
that there are no more than two thicknesses of paper
anywhere along the leading edge. All folds must be well
scored and sharply creased, and construction must be
tight (not baggy). Avoid using envelopes that are stuck
together with excess seam gum.

Fusing
compatibility

All inks, adhesives, and other materials of the envelope
must be compatible with the heat and pressure of the
fusing process. Materials must not discolor, melt, offset, or
release hazardous emissions when heated to 205° C

(401° F) for 0.1 second.
Moisture content 4% to 6% by weight
Paper Paper used for envelope construction must meet the paper

specifications listed in Table 2-2. See the Caution

information that follows this table.
Smoothness 100 to 250 Sheffield

2

(20 to 24 lb), single thickness on the

2

2

(24 lb) is exceeded.

(28 lb), single thickness on HP LaserJet

CAUTION Envelopes containing windows, clasps, snaps, or synthetic materials

should not be used; these can cause severe printer damage.
See the printer user guide before using envelopes in your

HP LaserJet printer.

EN

Chapter 2 – Guidelines and specifications for selecting media

23

Envelope construction

Because of their construction, some envelopes will not feed through
the printer dependably. Observe the following guidelines when
purchasing and using envelopes:

Make sure the envelope’s leading edge, which enters the printer,

z

is straight, with a sharp, well-creased fold with no more than two
thicknesses of paper. Envelope paper exceeding 90 g/m
basis weight may cause jamming.

Avoid using flimsy envelopes with thick or curved leading edges;

z

they will not feed reliably.
Envelopes should lay flat and should not be wrinkled, nicked, or

z

otherwise damaged.
Avoid envelopes with baggy construction; they might wrinkle

z

while going through the printer’s fuser assembly.
Make sure that the adhesives used in envelopes will not scorch,

z

melt, offset, or release hazardous emissions when heated to
205° C (401° F) for 0.1 second.

2

(24 lb)

24

Envelope specifications

EN

Results of envelope tests

HP tests many types of envelopes to determine which ones print
acceptably in an HP LaserJet printer. Some of the test results are
listed below.

Commercial or Official envelopes (also called Business or

z

Regular), with diagonal seams and standard gummed flaps,
performed the most reliably.

Envelopes with double-side seam construction, which have

z

vertical seams at both ends of the envelope instead of diagonal
seams, tend to be more flimsy than diagonal-seam envelopes.
Double-side seam envelopes may tend to jam or wrinkle unless
the edges are thin and sharply creased. However, a variety of
double-side seam envelopes have performed acceptably during
testing.

Envelopes with a peel-off adhesive strip, or with more than one

z

flap that folds over for sealing, must use adhesives compatible
with the heat and pressure of the printer’s fusing process. Many
varieties of this type of envelope performed satisfactorily in HP
testing; however, the extra flaps and strips may result in
increased jamming or wrinkling.

Generally, feeding problems increase with envelope size. Larger

z

envelope sizes (C5, B5) cannot have a basis weight greater than
105 g/m

2

(28 lb).

EN

Chapter 2 – Guidelines and specifications for selecting media

25

Unacceptable envelope construction

Many envelopes will feed through your HP LaserJet printer without
problems. However, some envelope constructions (as shown in
Figure 2-2) will not feed reliably. Problems may occur when the
envelopes are folded smaller than normal, causing a thick leading
edge near a corner. Folding inconsistencies at the manufacturer may
cause some envelopes to feed well and others to jam. Purchase
envelopes with the quality and consistency that you require.

Good construction Poor construction

Figure 2-2 Envelope construction

26

Envelope specifications

EN

Adhesive label specifications

CAUTION Not all HP Color LaserJet printers support labels. Refer to your user

guide to see if your HP Color LaserJet printer prints on labels.
Most labels are coated with pressure-sensitive adhesive. Label stock

includes the top or face sheet, the adhesive, and the liner or carrier
sheet (also referred to as the backing). See your HP LaserJet printer
user guide for detailed instructions on printing on labels.

Label stock facts

Consider the information in this section when choosing label stock.

Top or face sheets

The top sheet, which is the printing surface, is usually composed of
xerographic paper. The top sheets of the labels must provide good
toner adhesion.

Carrier sheets

The carrier sheet must be compatible with the temperatures and
pressure of the fusing process and must be coated for easy release of
the top sheet.

CAUTION Avoid removing labels from the carrier sheet and then printing on the

remaining labels. If you must remove labels, remove them from the
bottom of the carrier sheet, continuing toward the top.

Adhesives

The adhesive must withstand the 205° C (401° F) temperatures
encountered for 0.1 second in the printer’s fusing process. It also
must not produce emissions that exceed e xposure le v els or threshold
limits established by OSHA and other safety agencies. Adhesives
must not come in direct contact with any part of the printer. No
adhesive should be pressed out of the edges or between die-cuts (the
cuts between individual labels).

EN

Chapter 2 – Guidelines and specifications for selecting media

27

Label construction

Labels must be designed specifically for use with a laser printer . They
should have sufficient tack to the carrier sheet so they do not peel
during pickup and feeding. Also , the materials used for the label sheet
should be compatible with the heat and pressure of fusing and should
not contaminate the printer with adhesives or other substances.

CAUTION Labels that peel or contaminate components with adhesives can

severely damage y our printer. Make sure that any labels used in your
laser printer are specifically designed for laser printers.

Labels can be arranged on the sheet in a variety of configurations.
Corners of labels typically have a radius at each corner to prevent
peeling while being printed. If individual labels are surrounded by the
carrier sheet (matrix removed), it is recommended that they are
separated by no more than 2.5 mm (0.1 in).

Regularly inspect your labels after printing for any indications of label
edges lifting or adhesive contaminating the printed surface. If either of
these problems are observed, it is recommended that use of that box
or lot number of labels be discontinued and the problem discussed
with your label vendor.

Note Labels may meet the general specifications listed in Table 2-6 and still

not print satisfactorily because of the printing environment or other
variables over which HP has no control.

See “Purchasing media” in chapter 3 for information about ordering
HP labels.

28

Adhesive label specifications

EN

Table 2-6. Label stock specifications

Description Specifications

Adhesive Must not be on any external surfaces of the label

before, during, or after printing. Label construction
and die-cutting must not allow labels to peel off during

transport, printing, or fusing.
Caliper Must not exceed 0.18 mm (0.007 in)
Curl In-ream: flat within 13 mm (0.5 in)

10

Electrical surface
resistivity

Electrical volume
resistivity

Finishing precision Cut sheet to within ±0.8 mm (0.03 in) of nominal and

Fusing compatibility All adhesives, carrier sheets, top sheets, and other

Packaging Moisture-proof wrap to preserve properties
Shelf life One year minimum, stored at 22° C (72° F) and 50%

2.0 to 15 by 10

1.2 to 15 by 1011 ohms/cm

±0.2° square

materials used in label construction must be

compatible with the heat and pressure of the fusing

process. Materials must not discolor, melt, offset, or

release hazardous emissions when heated to

205° C (401° F) for 0.1 second.

relative humidity (R.H.)

ohms/in

2

EN

The following actions ma y cause labels to peel off, possibly damaging
the inside of your printer:

Using labels in the lower tray of noncompatible HP LaserJet

z

printers. See the user documentation for your printer for more
information.

Printing on labels while the printer is in duplex (two-sided printing)

z

mode
Removing individual labels from the carrier sheet and then

z

printing on the remaining labels

Chapter 2 – Guidelines and specifications for selecting media

29

Overhead transparency specifications

Overhead transparencies used in HP LaserJet printers must
withstand the 205° C (401° F) temperature encountered in the
printer’s fusing process for 0.1 second (1.2 seconds for HP Color
LaserJet printers). See your HP LaserJet printer user guide for
detailed instructions on using overhead transparencies. Table 2-7 lists
specifications for overhead transparencies.

Table 2-7. Overhead transparency specifications

Description Specifications

Caliper 0.12 to 0.132 mm (4.8 to 5.2 mils) for

HP Color LaserJet printers.

0.100 to 0.110 mm (3.9 to 4.3 mils) for all
others.

Cutting angle 90° ± 0.2°

10

Electrical surface resistivity 2.0 to 15 by 10
Finishing precision Cut sheet to within ± 0.8 mm (0.03 in) of

nominal and ± 0.2° square

Fusing compatibility Overhead transparency materials must be

compatible with the heat and pressure of the
fusing process. Materials must not discolor,
melt, offset, or release hazardous emissions
when heated to 205° C (401° F) for

0.1 second (1.2 seconds for HPColor
LaserJet printers). For HP LaserJet 500
printers: 200

ohms/in

°

C (392° F

2

).

See “Purchasing media” in chapter 3 for information about ordering
HP transparencies.

30

Overhead transparency specifications

EN

Types of media to avoid

HP recommends against using media with any of the following
characteristics:

paper that is extremely shiny or glossy

z

media that is very rough, highly textured, or embossed

z

media with multipart forms

z

media, media coatings, dyes, or inks that produce hazardous

z

emissions or melt that when exposed to a fusing temperature of
205° C (401° F) for 0.1 second (0.2 second for HP Color LaserJet
printers)

media that offsets or discolors

z

media that is damaged, curled, wrinkled, or irregularly shaped

z

envelopes or labels that are noncompatible with HP Color

z

LaserJet printers
envelopes that have an open flap with the adhesive exposed so

z

that closing the flap seals the envelope
envelopes with clasps, snaps, tie strings, windows, or synthetic

z

materials. These may severely damage the printer.
envelopes that are not square, straight, or constructed correctly

z

(see “Unacceptable envelope construction
envelopes with a basis weight less than 60 g/m

z

than 105 g/m
envelopes with baggy construction or folds that are not sharply

z

creased
media that was already printed on or was already fed through a

z

photocopier or an HP LaserJet printer. Do not refeed media.

2

(28 lb)

in chapter 2)

”

2

(16 lb) or greater

EN

Chapter 2 – Guidelines and specifications for selecting media

31

32

Types of media to avoid

EN

Purchasing, shipping,

3

and storing media

Introduction

The performance of HP LaserJet printers depends on the condition of
the print media used. This section contains recommendations for
purchasing, shipping, handling, and storing media, and it provides
information on the environmental effects on media.

Purchasing media

In the United States, you can purchase HP media (paper, overhead
transparencies, and labels) through the HP Direct Marketing Division.
To order from HP Direct Marketing, call [phone] and specify
the HP part number listed in the tables that follow. To order paper
outside of the U.S., contact your local HP sales office.

EN

Chapter 3 – Purchasing, shipping, and storing media

33

Paper

In the U.S., use the part numbers listed in Table 3-1 to order paper
from the HP Direct Marketing Division [phone]. Outside of the
U.S., contact your local HP sales office.

You can also purchase acceptable paper from your local paper
supplier. Ask your vendor to verify that the paper will work correctly
with an HP LaserJet printer.

Table 3-1. LaserJet printer paper part numbers

HP Multipurpose paper HP part number

500 sheets letter-size
216 by 279 mm (8.5 by 11 in)

250 sheets letter-size
216 by 279 mm (8.5 by 11 in)

500 sheets three-hole, letter-size
216 by 279 mm (8.5 by 11 in)

500 sheets legal-size
216 by 356 mm (8.5 by 14 in)

500 sheets tabloid-size
279 by 432 mm (11 by 17 in)

500 sheets recycled
216 by 279 mm (8.5 by 11 in)

HPM1120

HP25011

HPM113H

HPM1420

HPM1720

HPR1120

HP LaserJet paper HP part number

500 sheets letter-size
216 by 279 mm (8.5 by 11 in)

200 sheets letter-size
216 by 279 mm (8.5 by 11 in)

500 sheets three-hole, letter-size
216 by 279 mm (8.5 by 11 in)

HPJ1124

HPJ200C

HPJ113H

34

Purchasing media

(continued on the following page)

EN

HP Office paper HP part number

500 sheets letter-size
216 by 279 mm (8.5 by 11 in)

500 sheets, three-hole, letter-size
216 by 279 mm (8.5 by 11 in)

500 sheets legal-size
216 by 356 mm (8.5 by 14 in)

500 sheets tabloid-size
279 by 432 mm (11 by 17 in)

HP Soft Gloss paper (For HP Color LJ
4500 and 8500 printers only)

200 sheets letter-size
216 by 279 mm (8.5 by 11 in)

200 sheets A4 size
216 by 279 mm (8.5 by 11 in)

HPC8511

HPC3HP

HPC8514

HPC1117

HP part number

HPJ200C

HPJ113H

EN

Chapter 3 – Purchasing, shipping, and storing media

35

Overhead transparencies

In the U.S., use the HP part numbers in Table 3-2 to order
transparencies from the HP Direct Marketing Division
[phone]. To order transparencies outside of the U.S., contact
your local HP sales office. Each box contains 50 overhead
transparencies.

Table 3-2. HP LaserJet printer transparency part numbers

Transparency size HP part number

Letter – 216 by 279 mm (8.5 by 11 in) 92296T
A4 – by 297 mm (8.3 by 11.7 in) 92296U
Letter – HP Color LaserJet C2934A
A4 – HP Color LaserJet C2936A

Labels

In the U.S., use the HP part numbers in Table 3-3 to order labels from
the HP Direct Marketing Division [phone]. To order labels
outside of the U.S., contact your local HP sales office. Each box
contains 100 sheets, 216 by 279 mm (8 ¾ by 11 in), except where
otherwise noted.

36

Purchasing media

Table 3-3. HP LaserJet printer labels part numbers

Label size
(height by width)

25½ by 67 mm (1 by 2 5/8 in) 30 92296A
25½ by 102 mm (1 1/3 by 4 in) 14 92296B
25½ by 102 mm (1 by 4 in) 20 92296C
51 by 102 mm (2 by 4 in) 10 92296D
85 by 102 mm (3 1/3 by 4 in) 6 92296E
13 by 45 mm (½ by 1¾ in) 25 92296F
18 by 88 mm (2/3 by 3 7/16 in) 25 92296G
70 by 70 mm (2¾ by 2¾ in) 9 92296H*
39 by 102 mm (1½ by 4 in) 12 92296J*
215 by 279 mm (8½ by 11 in) 1 92296K

*Contains 70 sheets, 216 by 279 mm (8 1/2 by 11 in)

Number
per sheet

HP
part number

EN

Shipping media

When shipping print media through different environments, use
plastic wrap to wrap all cartons on the shipping pallet. When shipping
media across bodies of water, also wrap individual cartons.
Packaging must protect the media from physical damage.

Storing media

Follow these guidelines when stacking and storing print media:

z DO NOT store cartons or reams directly on the floor; place

cartons on a pallet or on shelves.

z DO NOT store individual reams in a manner that will result in

curling or warping.
Rewrap partially used packages of media before storing.

z

z DO NOT stack more than six cartons on top of each other.

Stack each carton squarely on top of the one underneath.

z

Stack each carton upright.

z

z DO NOT place anything on top of media, regardless of whether

the paper is packaged or unpackaged.
Store envelopes in a protective box to avoid damaging the

z

envelope edges.
Keep stored media away from temperature and humidity

z

extremes.

z DO NOT store printed documents in vinyl folders (which may

contain plasticizers) and do not expose the documents to
petroleum-based solvents.

EN

Chapter 3 – Purchasing, shipping, and storing media

37

Environmental considerations

HP LaserJet printers are designed to operate in a wide range of
environmental conditions. For best perf ormance, store and use media
at 20° to 24° C (68° to 75° F), with a relative humidity of 45 to 55
percent. Follow these guidelines when media is used in an
environment outside those temperature and humidity ranges:

z DO NOT expose the media to humidity or temperature extremes.

If media is left unwrapped or in the printer input tray, extreme
changes in the environment will cause the media to take on
unwanted characteristics.

In the case of humidity extremes, keep paper and envelopes

z

tightly wrapped in plastic.
If a significant temperature difference occurs between the media

z

storage area and the printer’s operating environment, before
unwrapping the media, allow it time to adjust to the temperature
in the printer’s operating environment. The greater the
temperature difference and the greater the amount of media to
acclimate, the longer this time period should be. Allow one day f or
every 10° C (20° F) difference in temperature between storage
environment and printing environment.

38

Environmental considerations

EN

4

Troubleshooting

Factors contributing to print problems

Print-quality problems usually result from media that does not meet
the specifications in this guide, has been stored improperly, or is not
in good condition. Ask the following questions to determine if the
media you are using is causing print-quality problems:

Does your media meet the specifications outlined in this

z

document?
Is the media in good condition? Is the media bent, wrinkled, or

z

“dog-eared?”
Are you using the printing procedures outlined in the printer user

z

guide?
Are you observing correct practices when handling media? (See

z

the guidelines in your printer user guide for loading media.)
Are your print-quality problems isolated to a specific type of

z

media?
Are you using media that has already been run through the

z

printer?
Did you check these aspects of the environment in which the

z

printer operates?

• temperature

• humidity

• exposure to sunlight

• cleanliness

EN

Chapter 4 – Troubleshooting

39

If you cannot determine the cause of your print defects, try the
following procedures:

1 Print with media from another lot or from a different manufacturer.
2 Flip the paper over in the tray, or turn it from front to rear (both, if

necessary).

3 If you have an envelope print-quality problem, print a sheet of

paper to determine if the problem is caused by the variable
thickness of your envelope.

• If the paper’s print quality is good, re-examine your envelope
and the envelope specifications in this guide.

• If the paper’s print quality is poor, you may have a printer
problem.

4 Read the rest of this chapter for troubleshooting information,

perform the maintenance procedures recommended in your
printer user guide, or see the troubleshooting section in your
printer user guide.

5 Call your authorized HP dealer for assistance.

Two-sided printing

Two-sided printing, also known as duplex printing, means printing on
both sides of a sheet. Duplex printing can be either an automatic or a
manual process.

40

Two-sided printing

Automatic duplexing

Automatic duplexing requires an HP LaserJet printer designed
especially for duplex printing.

Manual duplexing

Manual duplex printing, in which sheets that already have been
printed on are re-fed into the printer, requires both operator and
software intervention. (See the software application user guide for
more information.) Hewlett-Pac kard recommends manually re-feeding
sheets only through the manual feed slot or the MP tray. Do not
re-feed sheets from the paper cassette trays. Using the paper
cassette trays can cause jams, misfeeds, and print-quality problems.

EN

Indications of paper problems

This section provides information on conditions that may indicate
paper problems. These conditions include high rates of jams, high
rates of multiple feeds, and post-image curl.

High rates of jams

Problem

Paper is too stiff or heavy. Heavy or stiff paper may not be able to
negotiate the paper path or be picked up from the paper tray.

Solution

• Make sure the paper does not exceed the basis weight listed f or
your printer as specified in appendix A or in the user
documentation for your printer.

• Manually feed the paper into the printer.

• Use the correct output bin, as shown in your printer user guide.

• Use a lighter-weight paper.

Problem

EN

Paper is too moist, resulting in waviness and curl.

Solution

Try another ream of paper.

Problem

Paper is too smooth or too rough.

Solution

Change the paper type or manually feed the paper into the printer.
See your printer user guide for the correct output tray selection.

Problem

Paper is not cut to specification. This can cause poor print alignment,
mis-stacking, improper fit in the paper tray, or difficulties for the paper
sensors.

Solution

Change the paper type or try another ream of paper.

Chapter 4 – Troubleshooting

41

Problem

Paper has excessive curling.

Solution

Flip the paper stack over, try another ream, or change the type of
paper. You may need to acclimate the paper to your environment to
diminish differences in heat and moisture.

Problem

Paper is too light or too flimsy.

Solution

Make sure the paper meets the specifications listed in appendix A for
basis weight.

Problem

Paper adjustments are set incorrectly in the printer.

Solution

Make sure all paper adjustments have been set correctly. See the
user documentation for your printer for more information.

Recovering from paper jams

To recover from a paper jam, follow the directions listed in your
HP LaserJet printer user guide. DO NOT reuse the jammed

paper—even if it appears undamaged!

High rates of multiple feeds

Problem

Paper is added in small amounts to the paper tray.

Solution

Add only large amounts of paper to the paper tray, and avoid mixing
paper types in the paper tray.

Problem

Paper is too dry, not moist enough. (Insufficient moisture makes
paper less conductive and creates static buildup.)

Solution

Try another ream of paper or change the paper type.

42

Indications of paper problems

EN

Problem

Paper is too light or too thin.

Solution

Change the paper type.

Problem

Paper is too smooth or too rough. Surfaces tend to interlock or stick
together.

Solution

Change the paper type.

Problem

Paper is embossed or has raised letterhead.

Solution

Change the paper type.

Problem

Paper adjustments are set incorrectly.

Solution

EN

Make sure all paper adjustments have been set correctly. See the
user documentation for your printer for more information.

Problem

Paper sticks together at the edges (edgeweld).

Solution

Edgeweld is caused by the use of dull cutting blades during the
manufacturing process. Bend the paper to break the weld. Try a
different ream of paper or try a different paper manufacturer.

Chapter 4 – Troubleshooting

43

Post-image curl

When a sheet of paper is printed on by an HP LaserJet printer, the
sheet develops a curvature called post-image curl. Generally, the
higher the moisture content of the paper, the greater the curl. Higher
weight equals higher curl.

Both the paper and the printer affect the amount of post-image curl. In
the papermaking process, stresses that can cause curl are
manufactured into the paper, so different papers will have differing
amounts of post-image curl. In the printing process, the paper is
subjected to the heat and pressure of the fusing assembly as well as
to the contours of the paper path.

The following suggestions may help to reduce post-image curl:

Print to the face-up output bin. (This option is not available with

z

some printers.)
Turn the paper stack over or turn it around in the input tray to

z

reverse the direction of the paper.
When the printer is not in use for long periods, remove paper from

z

the paper tray and rewrap it.
Change to a different type or brand of paper.

z

Follow the storage and handling specifications in this document.

z

On HP Color LaserJet printers, reduce toner coverage by using

z

dither patterns rather than solid fill.
The grain of the paper can effect the curl of the media. Theref ore,

z

if you are feeding the paper landscape mode (horizontally) and
experiencing curl, try feeding the paper portrait mode (vertically).

44

Indications of paper problems

EN

Indications of envelope problems

Gray backg rounds and high r ates of jams may indicate problems with
envelopes.

Gray background

For best print quality, avoid printing over seams or other multiple la y er
areas. On some printers, you can reduce background (gray shading
in non-imaged areas) by adjusting the density of the print. If a gray
background appears on your envelopes, adjust the print density
setting on your printer to a darker setting. (See your printer user guide
for instructions about how to adjust print density.)

High rates of jams

Overfilling the env elope tray and misadjusting its guides are the most
common causes of jams. However, if the envelope tray is properly
loaded, the envelopes may be causing the problems.

Envelopes with the following characteristics can lead to jams:

Problem

Poorly manufactured envelopes.

EN

The leading edge must be straight, with a sharp, well-creased fold.
The envelope must not have more than two thicknesses of paper
along any leading edge. The folded layers of paper should form a
point at the leading-edge corners (as shown in Figure 2-2).

Solution

Purchase envelopes that are manufactured correctly, or run a pen or
pencil over the envelope edges to flatten them.

Problem

Envelopes are not creased sufficiently to have sharp edges.

Solution

Crease the leading edge of the envelope with a pen or pencil, or
change to a different type or brand.

Chapter 4 – Troubleshooting

45

Problem

Envelopes are wrinkled, “dog-eared,” or curled.

Solution

Use envelopes with edges that are thin and sharply creased.

Problem

Envelopes are too stiff or heavy. Stiff or heavy envelopes cannot
negotiate the paper path or be picked up from the envelope tray.

Solution

Use a lighter-weight envelope. Do not exceed 105 g/m

Problem

Envelopes are too smooth (not enough friction for transport) or too
rough.

Solution

Change to a different type of envelope.

Problem

Envelope is inserted too far into the manual feed slot.

2

(28 lb).

Solution

Insert the envelope only until you feel a slight resistance.

Recovering from envelope jams

To recover from an envelope jam, follow the directions listed in your
HP LaserJet printer user guide. DO NOT reuse the jammed

envelope—even if it appears undamaged!

Wrinkling

Wrinkles that form in envelopes after printing usually are caused by
the following envelope conditions:

loose envelope construction

z

folds that are not sharply creased

z

high moisture content

z

low weight/low strength paper used in envelope construction

z

See Figure 2-2 for characteristics of good envelope construction.

46

Indications of envelope problems

EN

A

Paper basis weights

Table A-1. Paper basis weights

Printer Source Basis Weight

HP LaserJet 1100/1100A Front input slot

Paper output bin

Scanner input bin

HP LaserJet 8100 Tray 1 (MP tray)

60 to 105 g/m2
(16 to 28 lb)

60 to 157 g/m
(16 to 43 lb)

60 to 157 g/m
(16 to 42 lb)

60 to 199 g/m
(16 to 53 lb)

2

2

2

EN

Tray 2
(Optional 500-sheet)

Tray 3, Tray 4, and Tray 5

Optional 2000-sheet

Standard output bin

Appendix A – Paper basis weights

60 to 105 g/m2
(16 to 28 lb)

60 to 105 g/m
(16 to 28 lb)

60 to 105 g/m
(16 to 28 lb)

60 to 105 g/m
(16 to 28 lb)

2

2

2

47

Table A-1. Paper basis weights (continued)

HP Color LaserJet 8500 Tray 1*

Tray 2 and Tray 3*

Tray 4 (Optional)*

Mailboxes

Left (face-up output bin)

Duplexer

*Limit to media-fill mark on
the media width guides

HP Color LaserJet 4500 Tray 1*

*Tray 1 can support paper
weights between 16 and 47
lb bond if the width of the
media is less than or equal
to 148 mm. Tray 1 can
support paper weights
between 16 and 36 lb bond
if the width of the media is
wider than 148 mm.

Tray 2, Tray 3

60 to 216 g/m

2

(16 to 58 lb)

60 to 105 g/m

2

(16 to 28 lb)

60 to 105 g/m

2*

(16 to 28 lb)

60 to 105 g/m

2

(16 to 28 lb)

60 to 216 g/m

2*

(16 to 58 lb)

60 to 105 g/m

2

(16 to 28 lb)

Single-sided:

60 to 159 g/m

2

(16 to 42 lb)

If less than or equal to 148
mm width:

60 to 176 g/m

2

(16 to 47lb)

If more than or equal to 148
mm width:

60 to 176 g/m

2

(16 to 36 lb)

HP LaserJet 3100 Printer product input bin

48

Appendix A – Paper basis weights

Duplexer

Front paper output slot

Scanner product bin

60 to 105 g/m

2

(16 to 28 lb)

64 to 105 g/m

2

(17 to 28 lb)
60 to 105 g/m

2

(16 to 28 lb)

60 to 163 g/m

2

(16 to 43lb)

44 to 252 g/m

2*

(12 to 67 lb)
*using special media lever

EN

Table A-1. Paper basis weights (continued)

Printer Source Basis Weight

HP LaserJet 8000 series Tray 1

60 to 199 g/m
(16 to 53 lb)

2

Tray 2, Tray 3, 2 x 500­sheet input tray, and

60 to 105 g/m

(16 to 28 lb)
optional 2000-sheet input
tray

HP LaserJet 5000 series Tray 1

60 to 199 g/m

(16 to 53 lb)

250-sheet tray and
optional 500-sheet tray

Duplexer

60 to 105 g/m

(16 to 28 lb)

60 to 105 g/m

(16 to 28 lb)

HP LaserJet Companion Paper input slot 60 to 105 g/m

(16 to 28 lb)

HP LaserJet 4000/4000N/
4000T/4000TN

Tray 1

250-sheet tray and
optional 500-sheet tray

Duplexer

60 to 199 g/m

(16 to 53 lb)

60 to 105 g/m

(16 to 28 lb)

60 to 105 g/m

(16 to 28 lb)

HP LaserJet 6L/5L Paper input bin

60 to 105 g/m

(16 to 28 lb)

Front paper output slot

60 to 163 g/m

(16 to 43 lb)

HP LaserJet 5Si Mopier
and 5Si/5Si MX

Tray 1

60 to 199 g/m

(16 to 53 lb)

2

2

2

2

2

2

2

2

2

2

2

EN

Tray 2, Tray 3, Tray 4, and
Duplexer

HP LaserJet 6P/6MP Tray 1 (Multipurpose tray)

Tray 2 (Paper cassette)

Appendix A – Paper basis weights

60 to 105 g/m

(16 to 28 lb)

60 to 163 g/m

(16 to 43 lb)

60 to 105 g/m

(16 to 28 lb)

2

2

2

49

Table A-1. Paper basis weights (continued)

Printer Source Basis Weight

HP LaserJet 5P/5MP Tray 1 (Multipurpose tray)

60 to 158 g/m
(16 to 42 lb)

2

Tray 2 (Paper cassette)

HP LaserJet 4V/4MV Multipurpose tray

Paper cassette

Optional lower cassette

HP LaserJet 4P/4PJ

Paper cassette

and 4L

Manual feed

HP LaserJet 4P/4PJ

HP Color LaserJet and

Manual feed

Front input tray

Color LaserJet 5/5M

Optional rear tray

Manual feed

HP LaserJet 5, 4 Plus,

(Tray 1) Multipurpose tray

and 4

60 to 105 g/m

2

(16 to 28 lb)
6

4 to 105 g/m

(17 to 28 lb)

64 to 105 g/m
(17 to 28 lb)

64 to 105 g/m
(17 to 28 lb)

6

0 to 105 g/m

(16 to 28 lb)

60 to 135 g/m
(16 to 36 lb)

136 to 157 g/m
(37 to 42 lb)
100 to 180 Sheffield

75 to 90 g/m

2

2

2

2

2

2

2

(20 to 24 lb)

75 to 90 g/m

2

(20 to 24 lb)

75 to 90 g/m

2

(20 to 24 lb)
60 to 135 g/m

2

(16 to 36 lb)

HP LaserJet 4Si and III Si Upper and lower bin:

HP LaserJet IIIP, IIP Plus,
and IIP

50

Appendix A – Paper basis weights

(Tray 2) Paper cassette

(Tray 3) Lower cassette

Duplexer (LJ4 Plus and 5
only)

Cassette and manual feed

Duplexer

Multipurpose tray and
paper cassettes

60 to 105 g/m
(16 to 28 lb)

60 to 90 g/m
(16 to 24 lb)

60 to 90 g/m
(16 to 24 lb)

60 to 105 g/m
(16 to 28 lb)

60 to 90 g/m
(16 to 24 lb)

60 to 105 g/m
(16 to 28 lb)

2

2

2

2

2

2

EN

Table A-1. Paper basis weights (continued)

Printer Source Basis Weight

HP LaserJet IIID and IID Upper bin:

Cassette and manual feed

60 to 135 g/m

(16 to 36 lb)

2

Lower bin:
Cassette and manual feed

Duplexer

60 to 90 g/m

(16 to 24 lb)

60 to 90 g/m

(16 to 24 lb)

HP LaserJet III and II Cassette and manual feed 60 to 135 g/m

(16 to 36 lb)

2

2

2

EN

Appendix A – Paper basis weights

51

Table A-2. Paper and envelope sizes

Printer Source Minimum Size Maximum Size

HP LaserJet 1100/
1100A

Paper input bin

76 by 127 mm
(3 by 5 in)

216 by 356 mm
(8.5 by 14 in)

Scanner input bin

HP LaserJet 8100 Tray 1 (MP tray)

Tray 2
(Optional 500-sheet)

Tray 3, Tray 4, and
Tray 5

(Optional 2000­sheet)

Envelope feeder

Duplexer

HP Color LaserJet
8500

Tray 1*

Tray 2*

Tray 3*

Tray 4 (Optional
2000-sheet)*

51 by 89 mm
(2 by 3.5 in)

76 by 127 mm
(3 by 5 in)

98 by 191 mm
(3.9 by 7.5 in)

98 by 191 mm
(3.9 by 7.5 in)

98 by 191 mm
(3.9 by 7.5 in)

90 by 160 mm
(3.5 by 6.3 in)

127by 191 mm
(5 by 7.5in)

98 by 191 mm
(3.9 by 7.5 in)

184 by 267 mm
(7.25 by 10.5 in)

184 by 267 mm
(7.25 by 10.5 in)

216 by 279 mm
(8.5 by 11 in

216 by 362
(8.5 by 30)

297 by 450 mm
(11.7 by 17.7 in)

216 by 762 mm
(8.5 by 30 in)

297 by 450 mm
(11.7 by 17.7 in)

279 by 432 mm
(11 by 17 in)

178 by 254 mm
(7 by 10 in)

279 by 432 mm
(11 by 17 in)

304 by 469 mm
(12 by 18.5 in)

216 by 256 mm
(8.5 by 14 in)

279 by 432 mm
(11 by 17 in)

279 by 432 mm
(11 by 17 in)

HP Color LaserJet
4500

HP LaserJet 3100 Paper input bin 76.2 by 127 mm

52

Appendix A – Paper basis weights

Duplexer

*Limit to media-fill
mark on the media
width guides

Tray 1*

Tra y 2, Tray 3

Duplexer

184 by 267 mm
(7.25 by 10.5 in)

76 by 127 mm
(3 by 5 in)

216 by 279 mm
(8.5 by 11 in)

216 by 279 mm
(8.5 by 11 in

(3 by 5 in)

279 by 432 mm
(11 by 17 in)

216 by 356 mm
(8.5 by 19)

182 by 257 mm
(7.2 by 10 in)

182 by 257 mm
(7.2 by 10 in)

310 by 470 mm
(12.2 by 18.5 in)

EN

Table A-2. Paper and envelope sizes (continued)

HP LaserJet 8000 Tray 1 (MP tray)

Tray 2 and Optional
500-sheet

Tray 3

Optional 2000-sheet

Envelope feeder

Duplexer

HP LaserJet 5000 Tray 1

Tray 2
(Optional 250-sheet)

Tray 3
(Optional 500-sheet)

HP LaserJet
Companion

HP LaserJet 4000/
4000N

Paper Input Slot 51 by 89 mm

Tray 1

93 by 191 mm
(3.67 by 7.5 in)

216 by 279 mm
(8.5 by 11 in)

216 by 279 mm
(8.5 by 11 in)

216 by 279 mm
(8.5 by 11 in)

98 by 191 mm
(3.1 by 7.5 in)

216 by 279
(8.5 by 11 in)

76 by 127 mm
(3 by 5 in)

148 by 210 mm
(5.8 by 8.2 in)

148 by 210 mm
(5.8 by 8.2 in)

(2 by 3.5 in)
76 by 127 mm

(3 by 5 in)

297 by 450 mm
(11.7 by 17.7 in)

257 by 364 mm
(10.1 by 14.3 in)

279 by 432 mm
(11 by 17 in)

279 by 432 mm
(11 by 17 in)

176 by 250 mm
(7 by 9.9 in)

279 by 432 mm
(11 by 17 in)

312 by 470 mm
(12.28 by 18.5 in)

279 by 432 mm
(11 by 17 in)

297 by 437 mm
(11.7 by17 in)

216 by 762 mm
(8.5 by 30 in)

216 by 356 mm
(8.5 by14 in)

EN

250-sheet tray

Envelope feeder

HP LaserJet 4000T/
4000TN

HP LaserJet 6L/5L Paper input bin 76.2 by 127 mm

Tray 1

250-sheet tray
500-sheet tray

Envelope feeder

216 by 279 mm
(8.5 by 11 in)

90 by 160 mm
(3.5 by 6.3 in)

76 by 127 mm
(3 by 5 in)

191 by 267 mm
(7.3 by 10.5 in)

90 by 160 mm
(3.5 by 6.3 in)

(3 by 5 in)

Appendix A – Paper basis weights

216 by 356 mm
(8.5 by 14 in)

178 by 254 mm
(7 by 10 in)

216 by 356 mm
(8.5 by 14 in)

216 by 356 mm
(8.5 by 14 in)

178 by 254 mm
(7 by 10 in)

216 by 356 mm
(8.5 by 14 in)

53

Table A-2. Paper and envelope sizes (continued)

Printer Source Minimum Size Maximum Size

HP LaserJet
5Si Mopier and
5Si/5Si MX

Tray 1

Tray 2

100 by 191 mm
(3.9 by 7.5 in)

216 by 279 mm
(A4 /Letter)
(8.5 by 11 in)

297 by 450 mm
(11.7 by 17.7 in)

257 by 364 mm
(JIS B4)
(10.12 by 14.33 in)

HP LaserJet 6P and
5P

HP LaserJet
5/5M/5N

Tray 3

Tray 4

Envelope feeder

Tray 1 (MP tray)

Tray 2
(Paper cassette)

Tray 1

Tray 2

Tray 3

216 by 279 mm
(Letter)
(8.5 by 11 in)

216 by 279 mm
(Letter)
(8.5 by 11 in)

100 by 191 mm
(3.9 by 7.5 in)

76 by 127 mm
(3 by 5 in)

184 by 267 mm
(7.25 by 10.5 in)
(Executive)

90 by 160 mm
(3.5 by 6.3 in)

184 by 267 mm
(7.25 by 10.5 in)
(Executive)

184 by 267 mm
(7.25 by 10.5 in)
(Executive)

279 by 432 mm
(11 by 17 in)

279 by 432 mm
(11 by 17 in)

163 by 241 mm
(6.4 by 9.5 in)

216 by 356 mm
(8.5 by 14 in)

216 by 356 mm
(8.5 by 14 in)

216 by 356 mm
(8.5 by 14 in)

216 by 356 mm
(8.5 by 14 in)

216 by 356 mm
(8.5 by 14 in)

HP Color LaserJet
and HP Color
LaserJet 5/5M

54

Appendix A – Paper basis weights

Envelope feeder

Front input tray

Optional rear tray

Manual feed

100 by 191 mm
(3.9 by 7.5 in)

184 by 267 mm
(7.25 by 10.5 in)

184 by 267 mm
(7.25 by 10.5 in)

184 by 267 mm
(7.25 by 10.5 in)

163 by 241 mm
(6.4 by 9.5 in)

279 by 432 mm
(11 by 17 in)

210 by 297 mm
(8.3 by 11.7 in)

279 by 432 mm
(11 by 17 in)

EN

Table A-2. Paper and envelope sizes (continued)

Printer Source Minimum Size Maximum Size

HP LaserJet 4V/
4MV

Multipurpose tray*

98.4 by 148 mm
(3.9 by 5.8 in)

297 by 450 mm
(11.7 by 17.7 in)

HP LaserJet 4P/4PJ

HP LaserJet 4L

HP LaserJet 4 Plus
and 4

HP LaserJet 4Si
and IIISi

HP LaserJet IIIP,
IIP Plus, and IIP

HP LaserJet IIID and
IID

Paper cassette
and optional lower
cassette

Manual feed*

Manual feed*

Multipurpose tray*

Envelope feeder

Manual feed*

Envelope feeder

Multipurpose tray*

Envelope cassette

Manual feed*

Envelope cassette

216 by 279 mm
(8.5 by 11 in)

76 by 127 mm
(3 by 5 in)

76 by 190 mm
(3 by 7.75 in)

90 by 160 mm
(3.5 by 6.3 in)

90 by 160 mm
(3.9 by 6.3 in)

98.4 by 216 mm
(3.8 by 8.5 in)

98.4 by 190 mm
(3.9 by 7.5 in)

96.4 by 170 mm
(3.8 by 6.7 in)

96.4 by 188 mm
(3.8 by 7.4 in)

90 by 190 mm
(3.5 by 7.5 in)

90 by 190 mm
(3.5 by 7.5 in)

297 by 432 mm
(11 by 17 in)

216 by 356 mm
(8.5 by 14 in)

216 by 356 mm
(8.5 by 14 in)

216 by 356 mm
(8.5 by 14 in)

176 by 250 mm
(7.0 by 9.9 in)

216 by 356 mm
(8.5 by 14 in)

110 by 241 mm
(4.3 by 9.5 in)

216 by 356 mm
(8.5 by 14 in)

164 by 255 mm
(6.5 by 10 in)

216 by 356 mm
(8.5 by 14 in)

183 by 257 mm
(7.2 by 10.1 in)

EN

Envelope feeder

HP LaserJet III
and II

* Multipurpose trays and manual feed slots accept paper, envelopes, labels, and
overhead transparencies.

Manual feed*

Envelope cassette

90 by 190 mm
(3.5 by 7.5 in)

90 by 190 mm
(3.5 by 7.5 in)

90 by 190 mm
(3.5 by 7.5 in)

120 by 257 mm
(4.7 by 10.1 in)

216 by 356 mm
(8.5 by 14 in)

183 by 257 mm
(7.2 by 10.1 in)

Appendix A – Paper basis weights

55

56

Appendix A – Paper basis weights

EN

Postal customer

B

recommendations
statement

Recommendations for postal customers
preparing laser printed mailings

Laser printing technology is being used by more and more postal
customers to prepare their mailings. Laser printers produce
high-quality images, offer advantages in speed, flexibility, and size,
and are the printers of choice for smaller companies and in-home
businesses.

Unlike offset printers, in which the ink is absorbed into the paper,
laser printers use heat to fuse a plastic toner to the surface of the
paper. Because of this difference, it is recommended that our
customers use the following guidelines to produce quality
laser-printed products for mailings:

EN

1 Ensure that the manufacturer’s recommended toner is used for

the laser printer. Many aftermarket toners do not comply with the
manufacturer’s original specifications. Hewlett-Packard cannot
predict or guarantee the performance of non-HP consumables in
Hewlett-Packard products.

2 Paper selection is critical. Several manufacturers have papers

that are specifically formulated for their printers. Good laser
printer papers have the following properties:

• Basis weight of 24 pounds (17 inch by 22 inch, by 500-sheet
ream size)

• Thickness from 4 to 4.7 mils (0.004 to 0.0047 inch)

• Smoothness from 100 to 150 Sheffield

Appendix B – Postal customer recommendations statement

57

The new HP LaserJet Paper has been found in our testing and in
the USPS testing to be superior to all the commodity grade
papers available. The only comparable performing papers we
tested were specialty papers not usually suitable for standard
business use.

3 Envelopes should be used to contain the laser-printed sheets.

The envelopes should hav e an edge or end seam and a minimum
basis weight of 24 pounds (17 inch by 22 inch, by 500-sheet ream
size). Avoid preparing laser-printed sheets as folded self-mailers.

4 Pre-bar code and pre-sort all envelopes. Meter the envelopes or

use precanceled stamps. (In addition to helping in the overall
performance of the laser-printed document, bar coding and
pre-sorting may offer some advantages in postal charges. Please
contact your USPS Business office to find out more about this.)

5 Avoid text-on-text contact. This can be avoided by printing

single-sided, and folding the inserted document with the fold to
the outside. Text will contact only the inside of the env elope or the
back side of the printed sheets. If text-on-text contact cannot be
avoided, use a thin insert such as onion skin to separate the
printed sheets.

6 Ensure that all mailpieces are trayed and presented at the retail

window or Bulk Mail Acceptance Unit (BMAU). Avoid placing

laser-printed mail into collection boxes or chutes.

58

Appendix B – Postal customer recommendations statement

EN

C

Glossary

Ash content Refers to the inorganic residue remaining after ignition
to remove combustibles and volatile compounds.

Basis weight/grammage Paper weight is measured on a metric
scale (grammage) as the weight in grams of one square meter of
paper. In English units, basis w eight refers to the w eight of 500 sheets
of a basic size paper (17 by 22.5 inches for bond paper).

Background Paper looks gray or appears dirty because small toner
particles are transferred to non-printed areas (white space). This
condition is a symptom of a print-quality problem.

Brightness Refers to the reflectance and whiteness of a sheet of
paper. Higher brightness papers are more expensive to produce and
are usually associated with higher quality.

Caliper The thickness of a sheet of media.

EN

Carrier sheet The sheet to which labels are temporarily attached.
Usually this sheet has a “slick” feeling or appears shiny. To be used,
labels must be peeled off the carrier sheet.

Curl Amount of curvature in a sheet of paper when it is laid on a flat
surface. In-ream curl is the amount of curvature the sheet has at the
time it is loaded into the paper tray, before printing. Post-image curl is
the amount of curvature the sheet has after it has moved through the
fusing and delivery operations. Any in-ream curl toward the side to be
imaged is undesirable, but a small amount of curl on the opposite side
is acceptable.

Cut edge condition Condition of the edges of paper, which can
affect paper’s ability to feed properly.

Cutouts Any portion of the paper that has been removed, including
binder holes, notches, square cuts.

Appendix C – Glossary

59

Density Relative darkness of print.
Die-cuts Cuts between individual labels. Die-cuts are made by a

machine in a predefined pattern.

Duplex Printing on both the front and back sides of a sheet of paper .
Electrical resistivity Characterizes how a sheet of paper accepts

and holds a charge. Because HP LaserJet printers use an electrical
charge to form the print image, the electrical properties of the sheet
are important to the overall imaging process. Factors that affect
resistivity are moisture content, paper composition, and the
temperature and humidity of the paper’s environment.

Finish/smoothness Characterizes a paper’s finish. Textured paper
causes inconsistent or blotchy colors and may wrinkle the fuser.
Glossy-smooth paper tends to highlight defects and may not hold
toner. For best results, use smooth paper.

Finishing precision Dimensions (length and width) of a piece of
media, how closely it is cut to the stated size, and how square it is.
Use media that is accurately sized, so that it can be handled properly.

Furnish The mixing and blending of various materials to make the
paper stock. Furnish is expressed in terms of fiber composition, such
as groundwood (mechanical) pulp, chemical wood pulp, or cotton.

Fusing compatibility Compatibility of media used in the printer and
how it reacts when exposed to the fuser's temperature of 200° C
(392° F) for 0.1 seconds (0.2 seconds for the HP Color LaserJet).
Media should not discolor, melt, offset, release hazardous emissions,
or break down in any way.

60

Appendix C – Glossary

Grain The machine direction of the paper. Fibers tend to orient
themselves in the direction of movement of the paper machine. The
grain either can run parallel to the long dimension of the paper (long
grain) or perpendicular to the long dimension (short grain). In a list of
dimensions appearing on a ream of paper, the grain direction is listed
last. For example, if short grain paper is specified on a ream of
letter-size paper, the size will read 11 by 8.5 inches (216 by 279 mm).

Groundwood Wood fibers that are extracted using a mechanical
rather than a chemical process. Groundwood papers are generally
weaker than chemical wood papers.

Mils One mil = 0.001 inches.

EN

Moisture content Ratio of moisture weight to the total weight of
paper. Moisture content varies for different paper types and may
change considerably if paper is subjected to temperature and
humidity extremes. The method most often used to measure the
relative moisture level of paper is the gravimetric method, in which
paper is weighed, oven dried, and then re-weighed. The difference in
weight is then calculated and expressed as a percentage of the
original weight.

Offset A printing process in which ink or toner is transferred from a
pre-printed form or a printed page onto rollers in the printer.

Opacity Determines degree to which printed matter shows through
a sheet of paper (either from the backside of a duplex ed page or from
an adjacent sheet).

Packaging Packaging is an important consideration when using
paper in an HP LaserJet printer because adequate packaging
maintains the correct level of moisture and protects paper from
damage during transport and storage.

Perforations A hole or series of holes punched through the paper
to aid in the separation of one piece of paper from another.

pH Refers to the acidity/alkalinity of paper as determined by the
TAPPI (Technical Association of the Pulp and Paper Industry)
cold-extraction method.

EN

Pre-consumer waste Paper that ne ver reaches the customer after it
has been manufactured. Pre-consumer waste can be unused paper
stock, bindery trimmings, envelope cuttings, business forms, or
unsold books or magazines.

Print media Paper, envelopes, overhead transparencies , and labels
used with printers. Print media used in HP LaserJet printers must
meet the guidelines and specifications listed in this guide.

Post-consumer waste Paper that the customer has used.
Post-consumer waste can be office paper, mail, used boxes, old
newspapers, or magazines.

Simplex Printing one side of a sheet of paper.
Smoothness Surface smoothness is determined by measuring the

rate of air flow between the sheet surf ace and a flat reference surf ace.
Smoothness usually is expressed in Sheffield or Bekk units.

Appendix C – Glossary

61

Stiffness The paper’s ability to resist deformation under stress.
Watermark An impression made in a wet sheet of paper as it is

being manufactured. Watermarks are visible when the sheet is held
up to light. They appear as a word, symbol, or other impression.

Waste paper A generic term used for post-consumer waste and
some pre-consumer waste.

Wax pick Characterizes the resistance of the surface layer of a
sheet to the breakaway of surface fragments. Expressed in Dennison
units.

Xerographic paper A grade of paper suitable for printing by the
electrophotographic process. Xerographic paper is char acterized by a
smooth finish, heat stability, non-curling qualities, and good aesthetic
properties (such as color, brightness, and cleanliness).

62

Appendix C – Glossary

EN

Index

A

adhesives

envelope specifications 25
label specifications 27
on envelopes 24
on labels 29
temperature specifications 27

archival paper

printing on 19

specifications 19
ash content, definition 59
automatic duplexing 40

B

background, definition 59
basis weight

definition 59

envelope specifications 23

paper specifications 15
brightness

definition 59

paper specifications 15

recycled paper 19

C

caliper

definition 59

envelope specifications 23

label specifications 29

overhead specifications 30

paper specifications 15
carrier sheet 27

adhesive label specifications 27

definition 59
colored paper, using 19
common sizes

of envelopes 11

of paper 10
curl

definition 59

envelope specifications 23

in ream 12

label specifications 29

media 12

in paper 12

paper specifications 15

post-image 12, 44

Customer Support Center 8
cut edge condition

definition 59
paper specifications 15

cutouts

definition 59

D

density, definition 60
die-cuts

adhesive 27

definition 60
duplex, definition 60
duplexing

automatic 40

manual 40

printing 40

E

electrical surface resistivity

definition 60

label specifications 29

overhead transparencies 30

paper specifications 15
envelopes

basis weight 23

caliper 23

common sizes 11

construction of 24

curling of 23

gray background 45

HP testing of 24, 25

sizes 11

specifications 22, 23

troubleshooting jams 45

types 11

types to avoid 24, 26, 31

wrinkling 46
environmental considerations 38

F

felt side 13
finish

definition 60

in media 13
finishing precision

definition 60

label specifications 29

EN

Index 63

overhead transparency specifications 30

paper specifications 15
forms, printing on 21
furnish (composition)

definition 60

media 12

paper specifications 15
fusing compatibility

definition 60

label specifications 29

overhead transparency specifications 30

paper specifications 15

G

grain

definition 60

paper specifications 15
grammage, basis weight 10
groundwood

definition 60

specification 12

H

HP Direct Marketing 36
HP LaserJet printers

performance 33

theory of operation 7
humidity, media specifications 38

J

jams, recovery

envelope 46

paper 42

L

labels

caliper 29

carrier sheets 15, 27

curl 29

duplex mode 29

electrical surface resistivity 29

fusing compatibility 29

packaging of 29

part numbers 36

precautions 29

printing with 27

purchasing 36

sizes 36

specifications 27, 29
letterhead, printing on 21

M

Magnetic Ink Character Recognition (MICR) 14
manual dupexing 40
media

archival 19
basis weight 15
colored 19
curl 12
definition 61
descriptions of 15
electrical surface resistivity 15
environmental considerations 38
finish (smoothness) 13, 15
furnish (composition) 12
humidity specifications 38
moisture content 15
overhead transparencies 30
solving paper jams 41
paper smoothness comparisons 18
precautions 31
properties 13
purchasing 33, 34, 35
quality 10
recycled 19
shipping 37
sizes 10
smoothness 18
specifications 15
stiffness 15
storing 37
temperature specifications 38
testing 10
types to avoid 31
with cutouts 20

with watermark 14
mils, definition 60
moisture content

definition 61

envelope specifications 23

pre-printed forms and letterhead 21

O

offset, definition 61
opacity, definition 61
overhead transparencies

electrical surface resistivity 30

fusing compatibility 30

part numbers 36

printing on 30

purchasing 33, 36

sizes 36

64 Index

EN

P

packaging

definition 61
label specifications 29

paper specifications 15
paper basis weights 47
paper jams, solving 41
paper smoothness comparison 18
part numbers

labels 36

overhead transparencies 36
perforations

definition 20, 61

printing on paper with 20
pH, definition 61
postal customers, recommendations for 57
post-consumer waste, definition 61
post-image curl 44
pre-consumer waste, definition 61
pre-printed forms, printing on 21
print defects, causes 40
print media

media

See

printing

on archival paper 19

on colored paper 19

on embossed paper 21

on letterhead 21

on pre-printed forms 21

on recycled paper 19

with cutouts/perforations 20
print-quality problems 39
problems

troubleshooting

See

Q

quality, of media 10

R

recycled paper

with groundwood 12

using 19

S

shipping media 37
simplex, definition 61
smoothness

definition 61
finish 13

specifications

archival paper 19
envelopes 22
overhead transparencies 30

paper 15
stiffness, definition 62
storing media 37

T

temperature specifications

adhesives 27

media 38
textured paper, printing on 21
theory of operation 7
transparencies

overhead transparencies

See

troubleshooting

envelope background gray 45

envelope jams 45

envelopes wrinkling 46

multiple paper feed 42

paper jams 41

post-image curl 44

print defects 40

print-quality problems 39
two-sided printing 40

W

waste

post-consumer 19

pre-consumer 19
waste paper, definition 62
watermark, definition 62
wax pick

definition 62

paper specifications 15
wire side 13

EN

X

xerographic paper, definition 62

Index 65

66 Index

EN

Printedonatleast
50%TotalRecycledFiber with
atleast 10% Post-Consumer Paper

Copyright© 1998
Hewlett-Packard Co.
Printed in USA

Manual Part No.
5040-9072

*5040-9072*
*5040-9072*

5040-9072