Canon Imageformula Dr 2020u User Guide

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2Close the feeder gently.
CAUTION
When closing the feeder, be careful  not to get your fingers caught, as 
this may result in personal injury.
Cleaning the Roller Unit and 
Separation Pad
If streaks appear in scanned images, or if scanned documents 
become dirty, the roller unit and separation pad may be dirty. Be sure 
to clean them regularly.
Hint
The roller unit and separation pad are located inside the feeder 
cover. Be sure to remove the roller unit and separation pad, as shown 
below, before...

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3Remove the roller unit.
Hold the center of the roller unit (roller portion), lift the lock lever 
side (A), then the other side ( B).
4Grasp both sides of the separation pad with your fingers, 
and remove the separation pad.
5Use a cloth dampened with water and thoroughly wrung 
out to wipe the rollers and separation pad clean.
Attaching the Roller Unit and Separation 
Pad
1Attach the separation pad.
Press the separation pad down gently until it snaps into place, and 
make sure it is securely...

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3Lower the lock lever to secure the roller unit into place. 
You can lower the lock lever smoothly by gently bending 
it inward.
4Close the feeder cover and document feed tray.
CAUTION
When closing the feeder cover and document feed tray, be 
careful not to get your fingers caught, as this may result in 
personal injury.
IMPORTANT
The separation pad and roller unit are consumable parts. If 
performance does not improve after cleaning the separation pad 
and roller unit, the parts may need to be...

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Troubleshooting
This section describes the problems that may occur while using the 
scanner and how to resolve them.
It you cannot resolve a problem, contact your local authorized Canon 
dealer or your service representative.
Common Problems and Solutions
Problem 1 The scanner will not turn on.
Solutions (1) Confirm that the power switch is set correctly. (2) Confirm that the AC adapter is plugged firmly into a 
power outlet.
Problem 2 The scanner is not recognized.
Solutions (1) Confirm that the sc...

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Problem 6 Pages are missing.
Solutions When the scanner drivers [Scanning Side] setting is [Skip Blank Page], documents with very little black may 
be unintentionally skipped. Select another scan mode 
setting such as [Simplex] or [Duplex], or decrease the 
[Ratio of black pixels]. If pages are skipped due to the 
document double feeding, see  “Problem 7  Documents 
jam (or double-feed).” .
Problem 7 Documents jam (or double-feed).
Solutions (1) Clean the feed rollers if necessary. (2) Proper...

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Software Troubleshooting
This section describes troubleshooting problems and solutions for 
operating the supplied software (CaptureOnTouch and 
CapturePerfect).
If scanning is too slow
(1) Close other running programs, if any.
(2) Scanning can be slowed down by memory shortage caused by 
memory-resident applications such as anti-virus programs. Close 
such memory-resident programs if necessary to free up memory 
space.
(3) When insufficient hard disk space  is available, the scanner may be 
unable...

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Can I copy or back up scanner setting configurations?
CaptureOnTouch
Scanner settings are backed up with other setting contents as 
Environment settings. See also the following question, “Can I copy or 
back up CaptureOnTouch settings?” .
CapturePerfect
Scanner setting configurations c annot be copied or backed up in 
CapturePerfect.
Can I copy or back up CaptureOnTouch settings?
Click the [Environ. Settings] button to display the [Environmental 
settings] dialog box, where setti ng configurations...

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CapturePerfect
Scan using the scan batch print function. Alternatively, register a job 
with a printer selected as the output destination.
How do I save scanned data in a shared folder?
CaptureOnTouch
➜For Scan First scanning, select [Save to folder] on the output 
method selection screen, and specify the shared folder as the save 
destination on the Output Setting screen. 
➜ For selected job scanning, select “Save as file” as the [Output 
method] when registering the job  and specify the shared...

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3If the jammed document does not appear wrinkled or 
otherwise damaged, close the feeder cover, and press the 
STOP button.
The jammed document is ejected, and the error message is 
cleared on the display.
4If the document is jammed at an angle or wrinkled, 
carefully remove the document without tearing it.
IMPORTANT
Remove the document carefully, and do not pull with excessive 
force. Should the document tear, always be sure to remove any 
pieces of paper remaining in the scanner.
5Close the feeder...

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Uninstalling the Software
Some scanner malfunctions can be resolved by reinstalling the 
software. Be sure to perform the procedure below to uninstall the 
software before reinstalling it.
Uninstalling the ISIS/TWAIN Driver
This section describes how to uninstall the ISIS/TWAIN driver as an 
example using Windows Vista. You can use the same procedure to 
uninstall CaptureOnTouch and CapturePerfect 3.0.
The instructions shown are when you are using the Windows Vista 
operating system.
IMPORTANT
When...