Canon imagePRESS C850 User manual

Quick Guide
Asia/Oceania
Read this guide rst.
Please read this guide before operating this product.
After you finish reading the guide, store it in a safe
place for future reference.
You can access
http://canon.com/oip-manual to
read the User’s Guide that describes
all functions of this machine.

imagePRESS C850/C750/C650
Practical Features
Auto Gradation Adjustment for Various
Paper Types
The Auto Adjust Gradation function adjusts the gradation, density,
and color tone of images, and only requires you to scan the test
page. This function can be used for various weights of paper so that
a high quality print result can be obtained in different paper types.
"Adjustment for Image Quality and Finishing (Calibration)" in the
User's Guide
Achieve High Quality Color Reproduction
with Auto Color Tone Correction
Compared to the Auto Adjust Gradation function, which adjusts
CMYK, the Auto Correct Color Tone function adjusts mixed colors
that are expressed with multiple toner. By using these functions
together, you can perform the precise color adjustment.
"Adjustment for Image Quality and Finishing (Calibration)" in the
User's Guide
Optimum Print Result for Each Paper Type
Paper information, which includes the basis weight, finish, fixing, and
curl correction level, can be registered as the paper characteristics.
As the detailed information can be specified for each different paper
type, you can obtain the fine print result with considering the paper
characteristics. This function is also effective for improving paper
conveyance and print quality.
"Paper Type Management" in the User's Guide
Curl Correction for Stable Paper Conveyance
The machine constantly corrects the paper curl which occurs due
to the pressure applied when toner is fixed. Moreover, by correcting
the paper curl during outputting, the machine reduces the risk of
a paper jam, and achieves the stable paper conveyance. The curl
correction can be specified for each paper type you want to use.
"Adjustment for Image Quality and Finishing (Calibration)" in the
User's Guide
"Paper Type Management" in the User's Guide

Easy Operation for Adjusting Image Position
You can adjust the image positions easily with this machine. All you
need is measuring marks on the test page and then entering the
measured values on the touch panel display. After that, the machine
will automatically adjust the image positions. You can make the
complicated adjustment easily by entering values for each edge of
front and back sides on a single screen.
"Paper Type Management" in the User's Guide
Quick Access to Frequently Used Settings
Different settings are required, depending on the printing purpose
or paper types, but accessing setting items located in various menus
every time is a quite complicated operation. In this case, register
frequently used settings in "Settings/Registration Shortcut" button.
You can directly access to the setting screen with this button and
save the effort to search necessary setting items.
"Settings/Registration" in the User's Guide
Alternative Settings for Your Needs,
"Productivity" or "Quality"
You can set a priority to either print productivity or image quality. For
instance, select "Productivity Priority" when printing a large number
of documents to achieve speedy printing. On the other hands, select
"Quality Priority" when printing documents which contain many
pictures to obtain precisely printed images. This function can be set
for each paper type to suit your various needs for printing.
"Settings/Registration" in the User's Guide

Contents
Thank you for purchasing this Canon product. Please read this manual thoroughly before operating the machine
to familiarize yourself with its capabilities, and to make the most of its many functions. For more information on the
detailed settings for the functions, see the User's Guide. After reading this manual, store it in a safe place for future
reference.
Symbols Used in This Manual
WARNING Indicates a warning concerning operations that may lead to death or injury to persons if not
performed correctly. To use the machine safely, always pay attention to these warnings.
CAUTION Indicates a caution concerning operations that may lead to injury to persons if not performed
correctly. To use the machine safely, always pay attention to these cautions.
IMP
O
RTANT Indicates operational requirements and restrictions. Be sure to read these items carefully to
operate the machine correctly, and avoid damage to the machine or property.
N
O
TE Indicates a clarification of an operation, or contains additional explanations for a procedure.
Reading these notes is highly recommended.
OPTION Indicates an optional product which can be used with this machine.
Parts and Their Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
External View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Internal View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Control Panel (Upright Control Panel-G1) . . . . . . . . . . . . . . . . . . . . . 8
Status Monitor/Cancel Screen . . . . . . . . . . . . . . . . . . . . . 10
How to Turn ON the Main Power. . . . . . . . . . . . . . . . . . . 11
Turning ON the Main Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Shutting Down the Machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Loading Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Available Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Registering Paper Types in the Paper Database. . . . . . . . . . . . . . .14
Loading Paper into the Paper Drawer . . . . . . . . . . . . . . . . . . . . . . . .15
Selecting Paper Types from the Paper Database. . . . . . . . . . . . . .16
Cleaning and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 17
Cleaning the Platen Glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Cleaning the Original Scanning Area. . . . . . . . . . . . . . . . . . . . . . . . .17
Cleaning the Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Automatic Feeder Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Cleaning the Inside of the Main Unit . . . . . . . . . . . . . . . . . . . . . . . . .19
Refreshing the Fixing Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Cleaning the Touch Panel Display . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Inspection of the Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Clearing Paper Jams and Staple Jams . . . . . . . . . . . . . . . . . . . . . . . .24
Reducing the Frequency of Paper Jams . . . . . . . . . . . . . . . . . . . . . .24
When an Error Message Is Displayed . . . . . . . . . . . . . . . . . . . . . . . . .25
Contacting Your Local Authorized Canon Dealer . . . . . . . . . . . . .26
If Memory Becomes Full . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
If the Main Power Does Not Turn ON. . . . . . . . . . . . . . . . . . . . . . . . .27
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Keys and Buttons Used in This Manual
The followings are examples of how keys and
buttons are expressed in this manual.
• Touch Panel Display Keys: [Key Name]
 [Copy] [Close]
• Control Panel Keys: Key Icon
• Buttons on Computer Operation Screens: [Button
Name]
[OK], [Add], [Cancel]
Illustrations Used in This Manual
Illustrations used in this manual are those displayed when
the imagePRESS C850 has the following optional equipment
attached to it: the Duplex Color Image Reader Unit-K1, Upright
Control Panel-G1, and Copy Tray-R2.

6
Parts and Their Functions
This section provides you with the names and functions of all the parts of the machine. The keys and display on the
control panel are also described. Read this section to use the machine’s various functions smoothly.
"Optional Products" in the User's Guide
▀
External View
6
7
8
9
10
123
4
5
1 USB Port (1)
Use to connect memory media to the machine via
USB.
2 Upright Control Panel-G1
Includes the keys, touch panel display, and
indicators required for operating the machine.
3 Main Power Switch
Press to the "|" side to turn ON the power.
4 Main Unit’s Right Cover
Open this cover when clearing a paper jam inside
the main unit.
5 Paper Drawer
Holds up to 500 sheets of paper (80 g/m2).
6 LAN Port
Use a LAN cable to connect the machine to a
network.
7 USB Port (2)
Use the USB port to connect external hard disks
and other devices to the machine.
8 USB Connector
Use a USB cable to connect the machine to a
computer.
9 Breaker
Detects excess current or leakage current.
10Test Button
Press this button to test the circuit breaker.

7
Parts and Their Functions
▀
Internal View
1
2
34
5
6
1 Toner Cartridge
This cartridge contains toner. Pull out this cartridge
when replacing it with a new one.
2 Front Cover
Open this cover to clear a paper jam in the
fixing transport unit.
3 Toner Replacement Cover
Open this cover to replace the toner cartridge.
4 Fixing Transport Unit
Pull the fixing transport unit out to clear a paper jam.
5 Waste Toner Container
Waste toner accumulates in this container. Pull out
this container when replacing it with a new one.
6 Left Cover on the Front Side
Open this cover to clear a paper jam or to replace
the waste toner container.

8
▀
Control Panel (Upright Control Panel-G1)
12 34
5
6
7
8
9
10111213141516
17
18
19
1 Processing/Data Indicator
Blinks green when the machine is performing
operations, and maintains a steady green light
when received data is stored in memory.
2 Error Indicator
Blinks or lights if there is an error in the machine.
When the Error indicator blinks, follow the
instructions that appear on the touch panel display.
When the Error indicator maintains a steady red
light, contact your local authorized Canon dealer.
3 Settings/Registration key
Press to register and specify settings.
4 Energy Saver key
Press to set the Energy Saver mode or Sleep mode.
The mode activated after pressing the Energy
Saver key can be selected beforehand. This key
lights when the machine enters either mode. To
reactivate the machine, press this key again.
5 Counter Check key
Press to display the copy and print count totals.
6 Numeric keys
Press to enter numerical values.
7 Clear key
Press to clear entered values or characters.
8 Main Power Indicator
Lights when the main power is turned ON.
9 Edit Pen
Use when operating the touch panel display, such
as to enter characters.
10 Stop key
Press to stop a job in progress.
11 Start key
Press to start an operation, such as scanning or
copying.

9
Parts and Their Functions
12 Reset key
Press to restore the standard settings of the
machine.
13 ID (Log In/Out) key
Press to log in/out when a login service such as
Department ID Management or SSO-H has been
set.
14 Touch Panel Display
The settings screen for each function is shown on
this display.
15 Brightness Adjustment Dial
Use to adjust the brightness of the touch panel
display.
16 Volume Settings key
Press to display the screen to specify the audible
tones for the fax function.
17 Status Monitor/Cancel key
Press to check the status of jobs or to cancel print
jobs. Also, press to check status of the machine,
such as checking the amount of paper remaining.
18 Quick Menu key
Press to retrieve favorite functions stored in Quick
Menu. Also, if you are using authentication, Quick
Menu set for each individual user can be displayed.
19 Main Menu key
Press to return to the Main Menu screen, such as
when you want to switch functions.
Setting the Energy Saver mode/Sleep mode to minimize energy consumption
You can save energy consumption by using the Energy Saver mode/Sleep mode when the machine is not
being used for a prolonged period of time, such as a lunch time. To use these modes, simply press on
the control panel. If the machine is idle for a certain period of time, the machine will enter the Sleep mode
(Auto Sleep mode). For more information on the mode which activates after is pressed, and detailed
information on the Auto Sleep mode, see the User's Guide.
"Basic Operations" > "Energy Saving Features" in the User's Guide

10
Status Monitor/Cancel Screen
If you press , the Status Monitor/Cancel screen appears, and you can confirm the status of jobs and
consumables on this screen. By obtaining information, such as the completion time of the current job or the amount
of paper remaining, you can perform smooth printing operation without interruption.
Useful situations
• When you want to know the completion time of jobs
• When you want to check the amount of paper remaining for efficient paper loading
• When you want to cancel a job which is registered by mistake
[Job] screen
The [Job] screen enables you to check the status of jobs in
the job list. On this screen, you can cancel a job in progress
and change the order of waiting jobs to print your job prior to
others.
[Paper] screen
You can check the paper information and the remaining
amount of paper in all paper sources. You can also specify the
paper type for each paper source in [Paper Settings].
[Toner/Other] screen
The remaining amount of toner is displayed in illustrations. You
can also check the remaining amount of staples, the amount of
punch waste, and the percentage of memory usage.

11
How to Turn ON the Main Power
This section explains how to turn ON the main power.
▀
Turning ON the Main Power
Make sure that the power plug is firmly inserted into the power outlet, and the breaker is turned ON.
1Open the main power switch cover.
2Press the main power switch to the "|" side.
• The main power indicator on the control panel lights.
IMP
O
RTANT
If you want to turn ON the main power again, wait for at least 10 seconds after the main power and the main power
indicator are turned OFF. However, when [Quick Startup Settings for Main Power] is enabled, if you don’t wait more
than 20 seconds after the Main Power indicator is turned OFF, quick startup is not performed.
N
O
TE
The response of the keys and buttons may not be optimal immediately after turning ON the main power of the
machine.
▀
Shutting Down the Machine
Do not turn OFF the main power in the following situations
• When using the I-Fax function
• When the message <Backing up stored data from the Remote UI...> is displayed
• When operating scan or print function
1Open the main power switch cover.
2Press the main power switch to the " " side.
• The main power indicator on the control panel turns
OFF.

12
Loading Paper
Load paper by following the procedure below. In this section, A4 custom size paper is used as an example.
Confirmation Confirm the paper types that can be loaded.
"Available Paper," on p. 12
Preparation Register all paper types you are going to use.
"Registering Paper Types in the Paper Database," on p. 14
Operation Load paper in the paper drawer.
"Loading Paper into the Paper Drawer," on p. 15
Registration Specify the loaded paper size and type for the paper drawer.
"Selecting Paper Types from the Paper Database," on p. 16
▀
Available Paper
This section describes the available paper for this machine. Paper that can be loaded differs, depending on the paper
sources. The following description includes the optional products as well as the standard paper drawers. The optional
products are indicated with OPTION icon.
Paper Drawer
Multi-drawer Paper Deck-C1
Document Insertion Unit-N1
Stack Bypass-B1
Stack Bypass Alignment Tray-C2
Long Sheet Tray-B1
POD Deck Lite-C1 OPTION
OPTION
OPTION
OPTION
OPTION
OPTION
N
O
TE
The optional Envelope Feeder Attachment is required to load envelopes, depending on the type of envelope.
"Basic Operations" > "Available Paper Stock" in the User's Guide

13
Loading Paper
Paper Drawer
Paper Capacity Upper, middle, and lower decks: 500 sheets (80 g/m2) each
Paper Type Thin 1 to 2, Plain 1 to 2, Heavy 1 to 4, Color, Recycled, Pre-Punched, Transparency, Clear Film, Tab, Bond,
Letterhead, Textured, Vellum, and Envelopes
Paper Size 330 mm x 483 mm, 320 mm x 450 mm (SRA3), 305 mm x 457 mm, A3, B4, A4, A4R, B5, B5R, A5R, Custom Size (100
mm x 148 mm to 330.2 mm x 487.7 mm), and Envelopes
Multi-drawer Paper Deck-C1 OPTION
Paper Capacity Upper, middle, and lower decks: 2,000 sheets (80 g/m2) each
Paper Type Thin 1 to 2, Plain 1 to 2, Heavy 1 to 6, Color, Recycled, Pre-Punched, Transparency, Clear Film, Labels, Tab, Bond,
Letterhead, Coated, Textured, Vellum, and Envelopes
Paper Size 330 mm x 483 mm, 320 mm x 450 mm (SRA3), 305 mm x 457 mm, A3, B4, A4, A4R, B5, B5R, A5R, Custom
Size(139.7 mm x 182 mm to 330.2 mm x 487.7 mm), and Envelopes
Document Insertion Unit-N1 OPTION
Load paper you want to use as a cover of a booklet in the document insertion unit, such as coated paper.
Paper Capacity Upper and Lower trays: 200 sheets (80 g/m2) each
Paper Type Thin 1 to 2, Plain 1 to 2, Heavy 1 to 6, Color, Recycled, Pre-Punched, Tab, Bond, Letterhead, Coated, Textured, and
Vellum
Paper Size 330 mm x 483 mm, 320 mm x 450 mm (SRA3), 305 mm x 457 mm, A3, B4, A4, A4R, B5, B5R, and Custom Size (182
mm x 182 mm to 330.2 mm x 487.7 mm)
Stack Bypass-B1 OPTION
Paper Capacity 100 sheets (80 g/m2)
Paper Type Thin 1 to 2, Plain 1 to 2, Heavy 1 to 6, Color, Recycled, Pre-punched, Transparency, Clear Film, Labels, Tab, Bond,
Letterhead, Coated, Textured, Vellum, and Envelopes
Paper Size 330 mm x 483 mm, 320 mm x 450 mm (SRA3), 305 mm x 457 mm, A3, B4, A4, A4R, B5, B5R, A5R, Custom Size (100
mm x 148 mm to 330.2 mm x 487.7 mm), and Envelopes
Long Sheet Tray-B1 OPTION
Use the Long Sheet Tray-B1 when using long sheets. The Stack Bypass-B1 and Stack Bypass Alignment Tray-C2 are required
separately.
Paper Capacity 1 sheet
Paper Type Thin 1, Plain 1 to 2, Heavy 1 to 6, Color, Recycled, Pre-punched, Clear Film, Labels, Bond, Coated, and Vellum
Paper Size Custom Size (100 mm x 148 mm to 330.2 mm x 487.7 mm, 210 mm x 487.8 mm to 330.2 mm x 762 mm)
POD Deck Lite-C1 OPTION
Paper Capacity 3,500 sheets (80 g/m2)
Paper Type Thin 1 to 2, Plain 1 to 2, Heavy 1 to 6, Color, Recycled, Pre-Punched, Transparency, Clear Film, Labels, Tab, Bond,
Letterhead, Coated, Textured, Vellum, and Envelopes
Paper Size 330 mm x 483 mm, 320 mm x 450 mm (SRA3), 305 mm x 457 mm, A3, B4, A4, A4R, B5, B5R, A5R, Custom Size
(139.7 mm x 148 mm to 330.2 mm x 487.7 mm), and Envelopes
* For more information on paper that can be loaded, see "Specifications," on p. 28.

14
▀
Registering Paper Types in the Paper Database
Register all paper types you are going to use with this machine. You can register paper types by selecting paper types
from the Paper Database.
N
O
TE
If you load paper which is already registered in the machine, such as plain or recycled paper, this step is not necessary.
Proceed to the next step "Loading Paper into the Paper Drawer".
1Press .
2Press [Preferences] [Paper Settings] [Paper Type Management Settings].
3Press [Paper Database].
4Select the paper type from the list press [OK].
5Confirm that the selected paper type is displayed in
the <Paper Type Management Settings> screen 
press [OK].
• If the desired paper type is not listed in the Paper Database,
select and duplicate a paper type that closely matches the
characteristics of the desired paper type, and then change
the necessary settings.
"Paper Type Management" in the User's Guide

15
Loading Paper
▀
Loading Paper into the Paper Drawer
1Open the paper drawer.
• Gently pull out the paper drawer until it stops.
2Adjust the position of the paper drawer guides.
• Slide each guide while squeezing it on the top to align for the
desired paper size.
3Load the paper stack into the paper drawer.
1
Load the paper stack against the right wall of the paper drawer.
2
Gently push the paper drawer back into the machine until it clicks
into place in the closed position.
N
O
TE
• Make sure to fan the paper stack, and align the edges before loading paper.
• Curled paper must be straightened out prior to use.
• Make sure that the height of the paper stack does not exceed the loading limit mark ( ).
• When loading pre-punched paper, transparencies/clear film, tab paper, and envelopes, make sure to load paper in
an appropriate orientation as the paper orientation differs, depending on the paper source.
"Maintenance" > "Loading Paper" in the User's Guide

16
▀
Selecting Paper Types from the Paper Database
Select the loaded paper type from the Paper Database.
1Press .
2Press [Preferences] [Paper Settings] [Paper Settings].
3Select the paper source in which you loaded paper 
press [Set].
• If you load paper other than standard paper, select [Custom
Size] or [Envelope].
4Select the loaded paper type from the list press [OK].
5Confirm that the selected paper type is displayed in
<Details of Selected Paper> press [OK].

17
Cleaning and Maintenance
For optimum operation of the machine, we recommend to clean and check the machine regularly.
▀
Cleaning the Platen Glass
If originals cannot be scanned properly, follow the cleaning procedure below. Clean with a cloth which is wrung after
being dampened in water, and then clean with a soft and dry cloth. Use the provided glass cleaning cloth for simple
cleaning.
1Clean the Platen Glass.
• Clean the platen glass and the underside of the feeder.
▀
Cleaning the Original Scanning Area
If originals which are fed from the feeder cannot be scanned properly, follow the procedure below.
1Press .
2Press [Adjustment/Maintenance] [Maintenance] [Original Scanning Area Cleaning
Method].
3Follow the cleaning instructions on the touch panel display.

18
▀
Cleaning the Feeder
If originals which are fed from the feeder become dirty, follow the cleaning procedure below. Clean with a cloth which
is wrung after being dampened in water, and then clean with a soft and dry cloth. Use the provided glass cleaning
cloth for simple cleaning.
1Clean the original scanning area.
• Open the feeder and clean the original scanning area (thin glass
strip).
2
1
2Open the covers.
1
Pull the lever above the feeder, and open the cover.
2
Open the inside cover.
3Clean the original scanning area of the feeder.
1
2
4Close the covers.
1
Close the inside cover.
2
Close the cover.

19
Cleaning and Maintenance
▀
Automatic Feeder Cleaning
If originals which are fed from the feeder become dirty, follow the procedure below.
1Place 10 sheets of blank paper into the feeder.
• Use A4 plain paper.
2Press .
3Press [Adjustment/Maintenance] [Maintenance] [Clean Feeder].
4Press [Start].
▀
Cleaning the Inside of the Main Unit
If output paper becomes dirty, follow the procedure below.
1Press .
2Press [Adjustment/Maintenance] [Maintenance] [Clean Inside Main Unit].
3Press [Start].
N
O
TE
• Similarly perform [Adjustment/Maintenance] [Maintenance] [Clean Wire] and [Adjustment/Maintenance] 
[Maintenance] [Clean Roller].
• Paper may be cleaned by performing [Adjustment/Maintenance] [Maintenance] [Clean Belt]. After loading three
or more sheets of plain paper into the upper paper drawer of the main unit, perform the above procedure.

20
▀
Refreshing the Fixing Belt
If streaks appear on the output paper, or gloss unevenness occurs in the high density area of the printed heavy paper,
follow the procedure below.
1Press .
2Press [Adjustment/Maintenance] [Maintenance] [Refresh Fixing Belt].
3Press [Start].
N
O
TE
The fixing belt is refreshed automatically every several sheets of paper is printed. You can adjust the refresh frequency
and time in [Fixing Roller Auto Refresh Level].
▀
Cleaning the Touch Panel Display
Wipe the touch panel display with a cloth dampened in water
or a mild cleaning agent, and then wipe with a soft, dry cloth.