Every effort has been made to ensure that the information in this
document is complete, accurate, and up-to-date. The manufacturer
assumes no responsibility for the results of errors beyond its control.
The manufacturer also cannot guarantee that changes in software
and equipment made by other manufacturers and referred to in this
guide will not affect the applicability of the information in it. Mention
of software products manufactured by other companies does not
necessarily constitute endorsement by the manufacturer.
While all reasonable efforts have been made to make this document as accurate
and helpful as possible, we make no warranty of any kind, expressed or implied,
as to the accuracy or completeness of the information contained herein.
The most up-to-date drivers and manuals are available from the Oki web site:
Microsoft Corporation.
Apple, Macintosh, Mac and Mac OS are registered trademarks of Apple Inc.
Other product names and brand names are registered trademarks or
trademarks of their proprietors.
This product complies with the requirements of the
Council Directives 2004/108/EC (EMC), 2006/95/EC
(LVD), 1999/5/EC (R&TTE) and 2009/125/EC (ErP), as
amended where applicable, on the approximation of the
laws of the member states relating to Electromagnetic
Compatibility, Low Voltage, Radio & Telecommunications
Terminal Equipment and Energy Related Products.
CAUTION!
This product complies with EN55022 Class B. However,
when fitted with the optional finisher, compliance to
EN55022 is Class A. In a domestic environment this
configuration may cause radio interference, in which case
the user may be required to take adequate measures.
The following cables were used to evaluate this product to achieve
EMC directive 2004/108/EC compliance and configurations other
than this may affect that compliance.
CABLE TYPE
Power1.8✘✘
USB5.0✘✔
Parallel1.8✘✔
LAN15.0✔✘
LENGTH (METRE)
Preface> 2
CORESHIELD
E
MERGENCY FIRST AID
Take care with toner powder:
If swallowed, give small amounts of cold water and
seek medical attention. DO NOT attempt to induce
vomiting.
If inhaled, move the person to an open area for
fresh air. Seek medical attention.
If it gets into the eyes, flush with large amounts of
water for at least 15 minutes keeping eyelids open.
Seek medical attention.
Spillages should be treated with cold water and
soap to help reduce risk of staining skin or clothing.
M
ANUFACTURER
Oki Data Corporation,
4-11-22 Shibaura, Minato-ku,
Tokyo 108-8551,
Japan
I
MPORTER TO THE
EU/
AUTHORISED
REPRESENTATIVE
Oki Europe Limited (trading as Oki Printing Solutions)
Blays House
Wick Road
Egham
Surrey, TW20 0HJ
United Kingdom
For all sales, support and general enquiries contact your local distributor.
NOTE
A note provides additional information to supplement the main
text.
!
CAUTION!
A caution provides additional information which, if
ignored, may result in equipment malfunction or
damage.
WARNING!
A warning provides additional information which, if
ignored, may result in a risk of personal injury.
Specifications subject to change without notice. All trademarks
acknowledged.
S
AFETY WARNINGS
Please be careful to read and understand the safety warnings on
the following pages before operating the printer.
Illustrations
Illustrations and components are representative only. Your unit
may differ slightly from those pictured in this document.
Notes, cautions and warnings!> 8
WARNING!
Ensure all warning and instruction labels on the
product are read, understood and followed in
order to prevent any risk of injury.
Ensure this and all other documentation is both
read carefully and retained for future
reference.
This printer unit weighs 167.5 lbs (76kg). 3
people are required to lift the printer safely and
prevent any risk of personnel injury.
The product must be placed on a flat solid
surface strong enough to support its weight to
prevent any risk of injury.
Ensure that there is adequate ventilation all
around the product to prevent overheating and
any risk of fire.
Keep the product away from direct heat
sources such as radiators and out of direct
sunlight to prevent any risk of overheating.
Ensure the power source matches the rating on
the product labelling. If in any doubt consult
your dealer or power provider to ensure no risk
of fire or shock exists.
Ensure both the printer and mains power
switches are in the OFF position before
connecting the AC power cable.
Notes, cautions and warnings!> 9
WARNING!
This product has an earthed plug as a safety
feature and will only connect to an earthed
socket. Do not attempt to defeat the earthing
or there is a risk of fire or shock.
If using an extension cable or power strip
ensure that the total current rating (amperes)
of all connected equipment is less than the
maximum rating of the extension cable, power
strip or wall outlet. Otherwise fire or shock
may occur.
Ensure the power cable is routed so as not to
be damaged or cause a trip hazard. If the cable
becomes frayed or damaged replace it
immediately to prevent any risk of shock.
Do not twist, constrict or knot the power cable
as this can cause overheating which may lead
to fire or electric shock.
Ensure the power socket to which the printer is
connected is easily accessible at all times.
Do not connect or disconnect the power plug
with a wet hand as this may cause electric
shock.
Always hold the power plug to connect/
disconnect the power cable to/from the mains
socket. Unplugging by pulling on the cable can
cause fraying and may lead to fire or electric
shock.
Notes, cautions and warnings!> 10
WARNING!
Use only the power cable supplied. Using a
power cable not intended for this product may
lead to fire or electric shock.
To avoid risk of fire and electric shock, do not
use the power cable supplied with this product
for any other electrical equipment.
If you do not connect the power cord or any
other cables only as directed in the User's
Guide, this may result in a fire.
Ensure loose clothing and hair are kept clear of
moving parts when printer is in operation to
prevent possible risk of injury.
When the printer cover is open, do not touch
the fuser unit as you may receive burns. Allow
it to cool before touching and always use the
handle to lift the fuser.
If the printer casing gets extremely hot or
smoke, unusual smells or abnormal noises are
emitted from the printer, there is a risk of fire.
Unplug the mains connector and contact your
dealer.
If the printer has been knocked over or
damaged, there is a risk of electric shock, fire
and/or injury. Unplug the mains connector and
contact your dealer.
Notes, cautions and warnings!> 11
WARNING!
If any liquid (for example water) is allowed to
enter the printer, there is a risk of fire. Unplug
the mains connector and contact your dealer.
Do not place containers containing liquid on the
printer as electric shock, fire and/or injuries
may occur.
If any foreign objects (for example clips) are
allowed to enter the printer, there is a risk of
electric shock, fire and/or injury. Unplug the
mains connector before removing the object.
Do not introduce foreign objects into the
ventilation holes or operate the printer with the
rear cover open as electric shock, fire and/or
injuries may occur.
Do not use an extremely flammable spray near
the printer as the printer contains high
temperature parts that may cause a fire.
Switch printer off before cleaning to prevent
any risk of injury. Clean using a damp cloth. Do
not use liquid or aerosol cleaners.
Do not carry out any operations on the printer
that are not specified in the User's Guide. This
may result in electric shock, fire and/or injury.
Notes, cautions and warnings!> 12
WARNING!
Risk of explosion if battery is replaced by an
incorrect type. Do not touch the battery. Printer
battery should not require replacement during
the life of the printer.
After installing additional memory or a hard
disk drive, the cover door must be closed and
secured to prevent risk of fire.
Take care with toner powder. If swallowed
induce vomiting and seek medical attention.
Never attempt to induce vomiting if person is
unconscious.
Take care with toner powder. If inhaled move
the person to an open area for fresh air. Seek
medical attention.
Take care with toner powder. If it gets into the
eyes flush with large amounts of water for at
least 15 minutes keeping eyelids open. Seek
medical attention.
Take care with toner powder. Spillages should
be treated with cold water and soap to help
reduce risk of staining skin or clothing.
Do not throw toner cartridges or image drum
cartridges into a fire as you may receive burns
from a dust explosion.
Notes, cautions and warnings!> 13
I
NTRODUCTION
Congratulations on buying an Oki color printer. Your new printer is
designed with advanced features to give you clear, vibrant color
prints and crisp black and white pages at high speed on a range of
print media for the office.
F
EATURES
The following features are standard on all models:
> Up to 31 pages per minute in full color for fast printing of
high impact color presentations and other documents
> 1200 x 600 dpi (dots per inch) print resolution for high
quality image production showing the finest detail
> Multilevel technology produces subtler tones and smoother
gradations of color to lend photographic quality to your
documents
> Single Pass Color Digital LED technology for high speed
processing of your printed pages
> 10BASE-T, 100BASE-TX and 1000Base-T network connection
lets you share this valuable resource among users on your
office network
> USB 2.0 and parallel (IEEE-1284) interfaces
> Adobe PostScript 3
™
Introduction> 14
Additionally, the following features are available:
> Hard disk drive enables spooled and verified printing
NOTE
This is an optional feature on the C920WT/ES9420WT model.
> Additional paper trays for loading a further 530 sheets at a
time to minimize operator intervention, or different paper
stocks for letterhead stationery, alternative paper sizes or
other print media:
NOTE
Images used in this manual may include optional features that
your printer does not have installed.
This manual is your user’s guide (check the web site,
www.okiprintingsolutions.com, for the most up-to-date version) for
your printer and forms part of the overall user support listed below:
> Installation Safety Booklet: as with all electrical
equipment, there are a few basic precautions that should be
taken to avoid injury or damage. Please be careful to read
and understand the safety warnings in the Safety Booklet
before operating the product.
This is a paper document that is packaged with the printer.
> Set-up guide: to describe how to unpack, connect and turn
on your printer.
This is a paper document that is packaged with the printer.
> This User’s Guide: to help you to become familiar with your
printer and make the best use of its many features. Also
included are guidelines for troubleshooting and maintenance
to ensure that it performs at its best. Additionally,
information is provided for adding optional accessories as
your printing needs evolve.
This is an electronic document.
> Network Guide: to provide machine configuration and
network configuration information.
This is an electronic document.
> Installation Guides: accompany consumable items and
optional accessories to describe how to install them.
These are paper documents that are packaged with the
consumables and optional accessories.
> Online Help: online information accessible from the printer
driver and utility software.
Introduction> 16
S
OFTWARE SUPPLIED
CD:
> Drivers, Utilities software and User's Guides
Contains drivers and Utilities software for use by a general
user and system administrators.
Contains documentation in electronic from to describe how to
use the printer for day-to-day printing tasks.
Introduction> 17
O
1
2
3
NLINE USAGE
This guide is intended to be read on screen using an Adobe Acrobat
Reader. Use the navigation and viewing tools provided in Acrobat.
You can access specific information in two ways:
> In the list of bookmarks down the left hand side of your
screen, click on the topic of interest to jump to the required
topic. (If the bookmarks are not available, use the “Contents”
on page 4.)
P
RINTING PAGES
The whole manual, individual pages, or sections may be printed. The
procedure is:
1.From the toolbar, select [File], then [Print] (or press the
Ctrl + P keys).
2.Choose which pages you wish to print:
(a)[All pages], (1), for the entire manual.
(b)[Current page], (2), for the page at which you are
looking.
Introduction> 18
(c)[Pages from] and [to], (3), for the range of pages you
specify by entering their page numbers.
3.Click on [OK].
Introduction> 19
P
RINTER AND PAPER OVERVIEW
O
PENING AND CLOSING THE TOP COVER
CAUTION!
To gain access to the inside of the printer, ensure that
the top cover is fully opened.
To open the top cover, squeeze the top cover handle (1) to release
the catch and raise the cover.
1
Printer and paper overview> 20
To close the top cover, push gently (1) until the cover stops midway
1
2
and then push harder (2) to close the cover completely. Ensure that
the cover is securely closed.
Printer and paper overview> 21
I
DENTIFYING MAJOR COMPONENTS
The major components of your printer are identified in the graphics
below.
1.Paper holding arm
2.Top cover (face-down stacker)
3.MP Tray (multi-purpose tray)
4.Tray 1 side cover
5.Paper size label
6.Paper gauge
7.Tray 1 (paper tray)
8.Control panel
9.Top c over ha ndl e
1
2
3
9
8
7
6
4
5
Printer and paper overview> 22
10.Face-down stacker
10
11
12
11.Power (on/off) switch
12.Face-up stacker
Printer and paper overview> 23
13.Interface unit
13
17
18
14
15
16
14.Network interface connector
15.Parallel interface connector
16.USB interface connector
17.Power connector
18.Ventilation openings
Printer and paper overview> 24
19.Image drum cartridge and toner cartridge (White)
19
20
21
22
23
24
25
26
20.Image drum cartridge and toner cartridge (Magenta)
21.Image drum cartridge and toner cartridge (Yellow)
22.Image drum cartridge and toner cartridge (Cyan)
23.Toner cartridge
24.Image drum cartridge
25.Fuser unit (Specifically for C920WT/ES9420WT)
26.LED heads
Printer and paper overview> 25
27.Belt unit (Specifically for C920WT/ES9420WT)
27
28
29
30
28.Drum basket handle
29.Drum basket
30.Front cover
Printer and paper overview> 26
31.Waste toner box
31
Printer and paper overview> 27
P
APER RECOMMENDATIONS
Your printer will handle a variety of print media, including a range of
paper weights and sizes, transparencies and envelopes. This section
provides general advice on choice of media, and explains how to use
each type.
The best performance will be obtained when using standard weight
75 – 90 g/m² paper designed for use in copiers and laser printers.
Suitable types are:
> M-Real Data Copy 80 g/m²
> Color Copy by Mondi
Use of heavily embossed or very rough textured paper is not
recommended.
Pre-printed stationery can be used, but the ink must not offset
when exposed to the high fuser temperatures used in the printing
process.
T
RANSPARENCIES
CAUTION!
Transparencies should be of the type designed for use in
copiers and laser printers. In particular, avoid office
transparencies designed for use by hand with marker
pens. These will melt in the fuser and cause damage.
Recommended type is:
CG3700 by 3M (A4 or Letter size)
Printer and paper overview> 28
P
APER INPUT AND OUTPUT INFORMATION
The following table relates paper parameters to input trays (Tray 1
to Tray 3 (numbering from the top) and MP Tray) and to output
areas (Face-down stacker and Face-up stacker).
TYPESIZEWEIGHTINPUT/
OUTPUT
Plain paperA3, A3 Nobi, A3 Wide,
Transparencies
a See important comments in “Paper recommendations” on page 28.
T
RAYS AND STACKERS
T
RAYS
1 TO 3
A4, A5, A6, B4, B5,
Letter, Legal 13,
Legal 13.5, Legal 14,
Executive, Tabloid,
Tabl oi d E xt ra
Custom:
W: 100 – 328 mm
L: 148 – 457.2 mm
Custom:
W: 79.2 – 328 mm
L: 90 – 457.2 mm
a
A4, Letter0.1 – 0.11 mm Tray 1 or MP Tray
64 – 216 g/m² Any Tray
Any Stacker
217 – 300 g/m²
64 – 216 g/m² Any Tray
64 – 300 g/m² MP Tray
MP Tray
Face-up Stacker
Face-up Stacker
Face-up Stacker
Face-up Stacker
Tray 1 is the standard blank paper input tray and can hold up to 530
sheets of 75 g/m² paper. Additional trays, to give a total of three,
can be added as an option to give a total tray capacity of 1590 sheets
of 75 g/m² paper.
If you have identical paper stock loaded in another tray (for example
Tray 2 or the MP Tray), you can have the printer automatically
switch to that other tray when the current tray runs out of paper.
This function can be enabled by driver settings when printing from a
Windows application or by a menu setting when printing from other
applications.
Printer and paper overview> 29
MP
TRAY
The multi-purpose tray is used for media sizes additional to those of
the standard trays, heavier media weights and special media.
The multi-purpose tray can handle the same sizes as the standard
trays but in weights up to 300 g/m². For very heavy paper stock use
the face-up paper stacker. This ensures that the paper path through
the printer is almost straight.
The multi-purpose tray can feed paper widths as small as 76.2 mm
and lengths up to 457.2 mm. Since paper of width less than 100 mm
does not auto feed, you have to press the ONLINE button to cause it
to feed.
Use the multi purpose tray for printing on envelopes and
transparencies. Up to 100 sheets of transparencies or 25 envelopes
can be loaded at one time, subject to a maximum stacking depth of
25 mm.
Paper or transparencies should be loaded print side up and top edge
into the printer.
F
ACE-DOWN STACKER
The face-down stacker on the top of the printer can hold up to 500
sheets of 80 g/m² standard paper, and can handle paper stocks from
64 – 216 g/m². Pages printed in reading order (page1 first) will be
sorted in reading order (last page on top, facing down).
F
ACE-UP STACKER
The face-up stacker should be opened and the tray extension pulled
out when required for use. (With the face-up stacker either open or
closed, the driver setting of Face Down will successfully direct prints
to the Face-Down stacker.)
The face-up stacker can hold up to 200 sheets of 80 g/m² standard
paper and can handle stocks up to 300 g/m².
Always use this stacker and the multi-purpose feeder for paper
stocks heavier than 216 g/m².
Printer and paper overview> 30
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