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 .
Whi l e a ll r e aso n a bl e e f fo r t s ha v e b ee n m a de t o ma k e t hi s d o cu m e n t a s a ccu r a t e a n d
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 web site:
http://www.okiprintingsolutions.com
Trademark Information _______________________________
Oki and Microline are registered trademarks of Oki Electric Industry Company Ltd.
Apple, Macintosh and Mac OS are registered trademarks of Apple Computers Inc.
ENERGY STAR is a trademark of the United States Environmental Protection
Agency.
Hewlett-Packard, HP, and LaserJet are registered trademarks of Hewlett-Packard
Company.
Microsoft, MS-DOS and Windows are either registered trademarks or trademarks of
Microsoft Corporation in the United States and/or other countries.
Other product names and brand names are registered trademarks or trademarks of
their proprietors.
Regulatory Information _______________________________
As an ENERGY STAR® Program Participant, the manufacturer has
determined that this product meets the ENERGY STAR guidelines
for energy efficiency.
This product complies with the requirements of the Council
Directives 89/336/EEC (EMC), 73/23/EEC (LVD) and 1999/5/EC
(R&TTE), as amended where applicable, on the approximation of
the laws of the member states relating to Electromagnetic
Compatibility, Low Voltage and Radio & Telecommunications
Terminal Equipment.
Illustrations and components are representative only. Your
unit may differ slightly from those pictured in this document.
NOTE
A note appears like this. A note provides
additional information to supplement the main
text which helps you to use and understand the
product.
Important!
An important message appears like this. An important
message provides supplemental information which can
prevent potential problems.
CAUTION!
A caution appears like this. A caution provides
additional information which, if ignored, may result
in equipment malfunction or damage.
WARNING!
A warning appears like this. A warning provides
additional information which, if ignored, may
result in a risk of personal injury.
C6100 Series User’s Guide
6
Introduction
Your new printer is designed with advanced features to give
you clear, vibrant color printing and crisp black and white
pages at high speed on a range of print media.
Features _________________________
•Up to 26 pages per minute full color.
•Up to 32 pages per minute in black and white.
•600 x 1200 dpi (dots per inch) print resolution.
•Single Pass Color Digital LED technology.
•10 Base-T and 100 Base-TX network connection.
Options __________________________
•Additional Memory: see page 118
256 MB or 512 MB
•Duplex Unit: see page 119
for automatic two-sided printing
•Hard disk drive: see page 120
allows you to use secure (confidential) printing, spool
print jobs, and store print jobs for later use
•Second Paper Tray: see page 121.
capacity 530 sheets 20-lb. paper
C6100 Series User’s Guide
7
Parts of the Printer
Front____________________________
c53_01_printerfull.jpg
1.Output Stacker, face down
Standard printed copy delivery point.
Holds up to 250 sheets of 20-lb. (75 g/m²) paper.
2.Operator Panel
Menu driven operator controls and LCD display panel
3.Paper Tray
Standard paper tray.
Holds up to 300 sheets of 20-lb. (75 g/m²) paper.
4.Multi-Purpose Tray
Used for feeding transparencies, heavier paper stocks,
envelopes and other special media.
Also for manual feeding of single sheets when required.
C6100 Series User’s Guide
8
Rear ____________________________
c51_01_backview.jpg
1.On/Off Switch
2.Socket for Power Cord
3.USB Interface
4.Network Interface
5.Duplex Unit
6.Rear Stacker (face up)
Capacity 100 sheets
When the rear paper stacker is folded down, paper exits
the printer through the rear of the printer and is stacked
face up.
This is used for labels, heavy print media, envelopes and
custom paper sizes.
When used with the Multi-Purpose Tray, the paper path
through the printer is essentially straight. This avoids
bending the print media around curves in the paper path
and makes paper feeding more reliable.
C6100 Series User’s Guide
9
Paper (Print Media)
General Information _____________________
CAUTION!
Print media must be able to withstand 446°F
(230°C) for 0.2 second.
You need to know three characteristics about any paper (print
media) you want to use with your printer:
• Type
• Weight
• Size
The type, weight, and size of the paper (print media)
determine:
• which paper feed tray can be used
Choices are multipurpose tray (MP Tray/manual feed)
or Trays 1 - 2
• which paper exit path can be used
Choices are face-down or face-up (straight-through)
• whether you can use double sided (duplex) printing
For type, see
• Paper: US Bond (Metric): see page 18
• Paper: Index: see page 20
• Letterhead: see page 22
• Envelopes: see page 26
• Transparencies: see page 31
• Labels: see page 29
For weight, refer to the correct paper type. Each paper type
has a table (matrix) of paper size, paper weight, paper feed,
paper exit, simplex/duplex correlations.
For general information on paper sizes, see “Paper Size, Feed,
and Exit” on page 37.
C6100 Series User’s Guide
10
Driver Settings ____________________
General Information
Select the thickness/type of media on which you are printing a
particular job, to produce optimum print results. This setting
overrides the setting in the printer menu.
If you are printing on a thick media such as card stock, be sure
to select one of the thicker settings (Heavy, Ultra Heavy,
Labels1, Labels 2) to get proper fusion of the toner to the page
and to prevent possible damage to the printer.
If the Ultra Heavy setting does not give proper toner fusion,
you can try the Label settings.
The default printer menu setting is Medium.
Choices are: Printer Setting, Light, Medium, Heavy, Ultra
Heavy, Labels1, Labels2, Transparency, Glossy, User Type 1,
User Type 2, User Type 3, User Type 4, and User Type 5.
C6100 Series User’s Guide
11
Choices
Choices are: Printer Setting, Light, Medium, Heavy, Ultra
Heavy, Labels1, Labels2, Transparency, Glossy, User Type 1,
User Type 2, User Type 3, User Type 4, and User Type 5.
Light
16-19 lb. US Bond (64-74 g/m2)
Medium
20-27 lb. US Bond (75-104 g/m2)
Heavy
28-32 lb. US Bond (105-120 g/m2)
58-67 lb. Index
Ultra Heavy
33-54 lb. US Bond (124-203 g/m2)
68-113 lb. Index
If the Ultra Heavy setting does not give proper toner
fusion, you can try the Label settings.
Labels1
For labels 0.1 to 0.169 mm thick.
Labels2
For labels 0.17 to 0.2 mm thick.
C6100 Series User’s Guide
12
Matrix: Driver Setting, Actual Weight, Paper
Tray, Duplex Option, and Paper Exit
Driver
Setting
Light16-19 lb. US Bond
Medium20-27 lb. US Bond
Heavy28-32 lb. US Bond
Ultra Heavy
Actual
Weight
64-74 g/m²
55-64 Kg
75-104 g/m²
65 - 89 Kg
(105-120 g/m²)
90 - 103 Kg
c
33-54 lb. US Bond
121-200 g/m²
104 - 172 Kg
Feed
TrayDuplexer?
Tra y 1
Tra y 2
Tra y 1
Tra y 2
MP Tray
Tra y 1
Tra y 2
MP Tray
Tra y 2
MP Tray
No
YesTop
Yes
(restricted to
28 lb.
maximum)
d
NoRear Only
Exit
Tray
Top
Rear
Rear
Rear Only
a. Face Down Stacker
b. Face Up Stacker
c. If the Ultra Heavy setting does not give proper toner fusion,
you can try the Label settings.
d. 47 lb. (177 g/m²) maximum for Tray 2
a
b
C6100 Series User’s Guide
13
Face up / Straight through / Rear Exit
If you are using heavy media, transparencies, envelopes or
labels, use the face up (straight through) paper feed path.
For face up printing (straight-through path), make sure the
rear exit is open and the paper support is extended.
• Paper is stacked in reverse order.
• Tray capacity is about 100 sheets. Actual capacity
depends on paper weight.
c53_72_rear3.jpg
C6100 Series User’s Guide
14
Windows
The normal default for these items is automatic detection.
CAUTION!
1. If type and weight are not correctly set,
• print quality deteriorates
• the fuser roller may be damaged.
2. If the settings in the printer differ from those selected on
your computer, the printer does not print.
An error message displays.
3. The following printer settings are given as a guide only.
Some software applications require the paper feed, size and
media settings to be selected from within the application
(page setup).
1.Open the file you want to print.
2.Click File → Print.
3.Select your printer.
4.Click Properties.
5.Under Layout, click Advanced.
6.Under Document Options, Printer Features, click Media
Typ e .
7.Use the drop down list to make your selection.
See “Driver Settings” on page 11.
See “Face up / Straight through / Rear Exit” on page 14.
8.Change any other settings as desired.
9.Click OK.
10. The Layout tab screen appears.
11. Change any other settings as desired.
12. Click OK.
13. The main Print screen appears.
14. Change any other settings as desired.
C6100 Series User’s Guide
15
15. Click OK.
16. The document prints.
C6100 Series User’s Guide
16
Macintosh OS 10.2 and 10.3
CAUTION!
1. If type and weight are not correctly set,
• print quality deteriorates
• the fuser roller may be damaged.
2. If the settings in the printer differ from those selected on
your computer, the printer does not print.
An error message displays.
3. The following printer settings are given as a guide only.
Some software applications require the paper feed, size and
media settings to be selected from within the application
(page setup).
1.Open the file you want to print.
2.Click File → Print.
3.Open the drop-down list below Presets. Select Printer
Option.
4.At Media Weight, make your selection.
See “Driver Settings” on page 11.
See “Face up / Straight through / Rear Exit” on page 14.
5.Change any other settings as desired.
6.Click Print.
C6100 Series User’s Guide
17
Paper, US Bond____________________
General Information
NOTE
To determine if a paper weight is US Bond or Index,
check the metric equivalent.
35 lb US Bond = 132 g/m
35 lb Index = 64 g/m
For more information, go to www.paper-paper.com/
weight.html
The size, weight, and type of the paper (print media)
determine:
• which paper feed tray can be used
• which paper exit path can be used
• whether you can use double sided (duplex) printing
Single sided printing is also known as simplex printing.
These settings can be made in the printer menu or in the
printer driver.
2
2
Application settings override driver settings.
Driver settings override printer menu settings.
The best performance is obtained when using paper designed
for use in copiers and laser printers. Suitable types include:
• Hammermill
®
Laser Printer Radiant White, 24 lb. US
Bond (90 g/m²)
• Xerox
• Oki
®
4024, 20 lb.US Bond (75 g/m²)
®
52206101 Bright White Proofing Paper, 32 lb. US
Bond (120 g/m
2
)
C6100 Series User’s Guide
18
Recommendations
•Check www.okiprintingsolutions.com for the latest
information on recommended papers for your printer.
•Paper should be stored flat, away from moisture, direct
sunlight and heat sources.
•The use of heavily laid or textured paper will
seriously affect the life of the image drum and give
poor print quality. Print quality can be improved by
changing the media setting to ‘Ultra Heavy.’ However,
this will reduce the output speed and prevent the use of
the duplex option.
If the Ultra Heavy setting does not give proper toner
fusion, you can try the Label settings.
•Avoid:
– Damp, damaged or curled paper.
– Very smooth, shiny or glossy paper.
– Heavily embossed letterhead paper, very rough
paper or paper that has a large grain difference
between the two sides.
– Paper with perforations, cut-outs or ragged edges.
– Carbon paper, recycled paper, NCR paper,
photosensitive paper, pressure sensitive paper or
thermal transfer paper.
Driver Settings
To select a paper type in the driver, see:
Windows: page 15
Macintosh OS 10.2 and 10.3: page 17
C6100 Series User’s Guide
19
Paper, Index ______________________
General Information
NOTE
To determine if a paper weight is US Bond or Index,
check the metric equivalent.
• 35 lb US Bond = 132 g/m
• 35 lb Index = 64 g/m
For more information, go to www.paper-paper.com/
weight.html
The size, weight, and type of the paper (print media)
determine:
• which paper feed tray can be used
• which paper exit path can be used
• whether you can use double sided (duplex) printing
Single sided printing is also known as simplex printing.
These settings can be made in the printer menu or in the
printer driver.
2
2
Application settings override driver settings.
Driver settings override printer menu settings.
The best performance is obtained when using paper designed
for use in copiers and laser printers. Suitable types include:
• Hammermill
®
Laser Printer Radiant White, 24 lb. US
Bond (90 g/m²)
• Xerox
• Oki
®
4024, 20 lb.US Bond (75 g/m²)
®
52206101 Bright White Proofing Paper, 32 lb. US
Bond (120 g/m
2
)
C6100 Series User’s Guide
20
Recommendations
•Check www.okiprintingsolutions.com for the latest
information on recommended papers for your printer.
•Paper should be stored flat, away from moisture, direct
sunlight and heat sources.
•The use of heavily laid or textured paper will
seriously affect the life of the image drum and give
poor print quality. Print quality can be improved by
changing the media setting to ‘Ultra Heavy.’ However,
this will reduce the output speed and prevent the use of
the duplex option.
If the Ultra Heavy setting does not give proper toner
fusion, you can try the Label settings.
•Avoid:
– Damp, damaged or curled paper.
– Very smooth, shiny or glossy paper.
– Heavily embossed letterhead paper, very rough paper
or paper that has a large grain difference between the
two sides.
– Paper with perforations, cut-outs or ragged edges.
– Carbon paper, recycled paper, NCR paper,
photosensitive paper, pressure sensitive paper or
thermal transfer paper.
Driver Settings
To select a paper type in the driver, see:
Windows: page 15
Macintosh OS 10.2 and 10.3: page 17
C6100 Series User’s Guide
21
Letterhead _______________________
General Information
The size, weight, and type of the paper (print media)
determine:
• which paper feed tray can be used
• which paper exit path can be used
• whether you can use double sided (duplex) printing
Single sided printing is also known as simplex printing.
These settings can be made in the printer menu or in the
printer driver.
Application settings override driver settings.
Driver settings override printer menu settings.
When using heavily laid or textured paper
• the life of the image drum is seriously shortened
• print quality may deteriorate
• change the media setting to ‘Ultra Heavy’.
This will improve print quality.
When using ‘Ultra Heavy’:
• print speed slows
• duplexing cannot be used.
If the Ultra Heavy setting does not give proper toner
fusion, you can try the Label settings.
C6100 Series User’s Guide
22
Recommendations
CAUTION
Print media must be able to withstand 446°F
(230°C) for 0.2 second.
Only use letterhead designed for color laser printers and
photocopiers.
Don’t use very smooth, shiny or glossy paper.
Don’t use heavily embossed headed paper, very rough paper
or paper that has a large grain difference between the two
sides.
•Check www.okiprintingsolutions.com for the latest
information on recommended papers for your printer.
•Paper should be stored flat, away from moisture, direct
sunlight and heat sources.
•The use of heavily laid or textured paper will
seriously affect the life of the image drum and give
poor print quality. Print quality can be improved by
changing the media setting to ‘Ultra Heavy.’ However,
this will reduce the output speed and prevent the use of
the duplex option.
If the Ultra Heavy setting does not give proper toner
fusion, you can try the Label settings.
•Avoid:
– Damp, damaged or curled paper.
– Very smooth, shiny or glossy paper.
– Heavily embossed letterhead paper, very rough paper or
paper that has a large grain difference between the two
sides.
– Paper with perforations, cut-outs or ragged edges.
– Carbon paper, recycled paper, NCR paper,
photosensitive paper, pressure sensitive paper or
thermal transfer paper.
C6100 Series User’s Guide
23
Driver Settings
To select a paper type in the driver, see:
Windows: page 15
Macintosh OS 10.2 and 10.3: page 17
Loading
Trays 1 and 2
Long edge feed
Face down, top toward the back of the printer.
Letr_lef.bmp
Short edge feed
face down, top to the right
ltrhd_se.jpg
C6100 Series User’s Guide
24
Loading
Multi-purpose Tray (Manual Feed)
Long edge feed
Face up, top to the back of the printer
manl_le.jpg
Short edge feed
Face up, top to the left
manl_se.jp
C6100 Series User’s Guide
25
Envelopes ________________________
General Information
Envelopes can only be fed from the multi-purpose (MP /
manual feed) tray.
Envelopes can only exit the printer face-up (straight through, rear exit).
Recommendations
CAUTION
Print media must be able to withstand 446°F
(230°C) for 0.2 second.
Envelopes.jpg
1.Use only recommended envelopes.
Oki 52206301 and 52206302
For more information, see “Print Media, Oki“ in your
Handy Reference Guide or www.okiprintingsolutions.com.
2.Store envelopes flat and away from
• moisture
• direct sunlight
• heat sources
3.Don’t use envelopes with
• windows
• metal clasps
• self-sealing flaps
C6100 Series User’s Guide
26
• damp, damaged or curled paper envelopes
Driver Settings
To select a paper type in the driver, see:
Windows: page 15
Macintosh OS 10.2 and 10.3: page 17
Loading
Trays 1 - 2
Envelopes cannot be fed from paper trays 1 - 2.
Multi-purpose Tray (Manual Feed)
Face up (flap side down), top to the left (into the printer)
C96_LoadPaperMPTray_Envelopes_crop.JPG
Paper Exit
If you are using heavy media, transparencies, envelopes or
labels, use the face up (straight through) paper feed path.
For face up printing (straight-through path), make sure the
rear exit is open and the paper support is extended.
• Paper is stacked in reverse order.
C6100 Series User’s Guide
27
• Tray capacity is about 100 sheets. Actual capacity
depends on paper weight.
c53_72_rear3.jpg
C6100 Series User’s Guide
28
Labels ___________________________
General Information
Labels can only be fed from the multi-purpose (MP / manual
feed) tray.
Labels can only exit the printer face-up (straight through, rear exit).
Avery 5161 White Laser Labels (letter size) work well with your
printer.
Check www.okiprintingsolutions.com for the latest information
on media for your printer.
Recommendations
CAUTION
Print media must be able to withstand 446°F
(230°C) for 0.2 second.
•Only use labels designed for color laser printers and
photocopiers.
•Labels must cover the entire carrier sheet.
•The carrier sheet or adhesive must not be exposed to
any part of the printer.
Driver Settings
To select a paper type in the driver, see:
Windows: page 15
Macintosh OS 10.2 and 10.3: page 17
Loading
Trays 1 - 2
Labels cannot be fed from paper trays 1 - 2.
C6100 Series User’s Guide
29
Multi-purpose Tray (Manual Feed)
Face up (print side up)
Default = long edge feed.
C96_LoadPaperMPTray_Labels_crop.JPG
Paper Exit
If you are using heavy media, transparencies, envelopes or
labels, use the face up (straight through) paper feed path.
For face up printing (straight-through path), make sure the
rear exit is open and the paper support is extended.
• Paper is stacked in reverse order.
• Tray capacity is about 100 sheets. Actual capacity
depends on paper weight.
c53_72_rear3.jpg
C6100 Series User’s Guide
30
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