Question about Canon imageCLASS D780 All-In-One Laser Printer

Canon Imageclass D780

Printed copies have one horizontial line when using the automatic feed. When putting a copy on the glass and printing there is no line. Where is the line coming from?

tgovern Nov 27, 2009

how do I manuel set the machine up to manuel feed the paper from the sidre.

1 Answer

Anonymous

Clean the platen glass and make sure the isn't any debris or ink on it, especially by the roller. If you make a copy thru the ADF while the ink is still wet it will deposit on the glass.

Posted on Jun 08, 2007

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1 Answer

I just changed my laser cartridge and with the new one in my printed pages have two or three horizontal lines on them

Hi,
does these lines occures when you print something out or just when you copy something?

If it occures when you print out also check the new toner crg. drum ( green roller ) and if the lines are on its surface change the crg. because that means that the cleaning blade is faulty.

If there isnt lines on drum, and printed image is OK, clean the copy glass ( both platten and adf glass ).

Worst case scenarion is faulty fixing film.

Hope that helped!

Aug 13, 2010 | Canon imageCLASS MF5550 All-In-One Laser...

1 Answer

Line appears on copies when using the automatic feeder.

You have a piece of dirt or whiteout on the scanner glass. When the paper is moving by, it creates a "Line" if the paper is sitting still on the glass, it may be a dot or it may even use a different glass alltogether for ADF vs Paltten scanning.

Jun 09, 2009 | Canon imageCLASS D860 All-In-One Laser...

2 Answers

Vertical black line on side of copies only when using autofeed

Clean the small piece of glass on the flat bed. Should be on the left side of the flat bed when you lift the doc feeder.

Apr 11, 2009 | Canon Office Equipment & Supplies

1 Answer

Paper is jamming on right corner of copy as feeds out of copier

please check print delivery sensor

Mar 26, 2009 | Canon imageCLASS D780 All-In-One Laser...

1 Answer

Lines of copies utilizing automatic feeder

look to the side of your big glass and you'll see a piece of glass about 1.5" wide. thats the galss that is used for scanning from the feeder. theres got to be something on that glass. possibly white-out or even a small speck of toner can cause that. look closely.

hth,
razors

Mar 16, 2009 | Brother MFC-9440CN Laser Printer

1 Answer

Copy is not clear

Hi
The first thing you must check is the small scanner glass,this is the narrow glass that the machine is using when you use the dockfeeder,clean that glass and make sure there is no back dots on the glass.Even a small dot can cause lines on your page.But this lines will only be sen if you using the docfeeder.
The second probem can be the drum cartridge that is faulty.With this problem all your copies and printed pages will have lines.
If your drum is ok,the next thing that goes wrong is the fixing assy.

Jan 23, 2009 | Canon imageCLASS D320 Digital Copier

2 Answers

Canon Imageclass D780 is making strange sounds and is not printing correctly

Fuser problem.

Aug 22, 2008 | Canon imageCLASS D780 All-In-One Laser...

1 Answer

Printing issue

Check your transfer roller or you may have some board issues

Jun 03, 2008 | Canon imageCLASS D780 All-In-One Laser...

2 Answers

Black lines

Here you go.
1. Put a paper on the glass don't use the ADF see if you printed copy has a black line on it.

If you do not have a black line on it, do the following.

Lift up the ADF tray go in to additional functions #6 Adjust/Clean and then #2 clean the ADF feeder.

The roller is in the top of the ADF feeder at the right and is white in color. When you press the (set) button you will see it spin.

Also clean the glass you have some whiteout on it. (Look at the glass real good when cleaning it).

Nov 19, 2007 | Canon imageCLASS D880 All-In-One Laser...

1 Answer

Copier print quality

take a credit card and scrape the glass clean. You only need to clean along the right side of the glass where the paper passes through. Dirt that you can't even see will cause the lines.

Oct 04, 2007 | Canon imageCLASS D780 All-In-One Laser...

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I just changed my laser cartridge and with the new one in my printed pages have two or three horizontal lines on them

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How do I replace ADF Kit on canon D780 printer I have several machines with ADF pick-up problems, including picking up multiple sheets at once. I got the 3 pc. ADF kits (P/U roller, Sep. Pad, and Sep. Roller) and I am just looking for anyone that has replaced this kit and may be able to explain the easiest way of doing it. ANY TRICKS? Any way of opening the document feeder cover to gain more access to rollers? Thanks in advance.

Aug 25, 2017 | Canon imageCLASS D780 All-In-One Laser...

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