Question about Canon PIXMA MP780 All-In-One InkJet Printer

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MP780 photocopies made using ADF have a line which obscures content

Photocopies made using ADF have a line which obscures content of the copy

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shredlew

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I tried the other solutions listed her - and no luck. After cleaning the ADF rollers, like the manual suggested - no change.

I finally figured out why things that I coped with the ADF had lines/marks on them, but those placed directly on the platen (glass) were fine. When you copy with the ADF, the copy is not being made from the large glass area. Rather, there is a thin glass area right next to it.

Turns out, there were a couple of smudges (goo) on that thin piece of glass which were creating long vertical lines down every sheet. Cleaned the glass - problem solved!

Gosh, I hope this helps someone else save some time, and frustration.

Posted on Dec 03, 2008

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Rishi Roshan Ali

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You need to do a few deep cleanings or take your inkwell out and clean it manually buy eighter submerging it in rubbing alcohol or boiling it in alcohol

http://www.nodevice.com/manual/newmans/1164257699mp750780smpdf/get13922.html

thats the service manual

Posted on Dec 31, 2007

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1 Answer

Scanner leaving black streaks


There are two possible fixes.

Download the latest firmware update by CLICKING HERE

The following is provided by courtesy of Lexmark:
Problem Vertical lines; Auto document feeder scan anomaly; ADF scanning problem; Scan issue; Scanner issue; Visible line; Streaks show on page; solid line down the page; Top to bottom line; Smudge runs down the page; Opaque line; Broken line; Bar all the way down the page Solution Overview

This article provides the self-diagnostic steps necessary to evaluate top-to-bottom streaks that appear when copying or scanning.

Important! This is seldom a scanner hardware failure.

The main reason for this anomaly is debris or marks on the scanner glass that is used for Auto document feeder (ADF) page scans.

Printed or Scanned Page Illustration

copyvertstreaks.jpg

Who should consider this article?

Any user of an MFP or All-In-One printer experiencing the following symptoms:

  • -Vertical lines only when using the Autodocument Feeder (ADF).
  • -Observed with any type of scan job (e-mail, ftp, solutions, fax).
  • -However, normal expected output when the page is scanned from the scanner flatbed.



ADF scan behavior

Think of it this way:

  • -The page is pulled from the ADF.
  • -The moving page slides across an ADF-designated portion of glass.
  • -The image sensor, which is located under the glass, reads and interprets the moving page's contents.
  • -Contamination on this ADF glass is seen by the image sensor for the entire length of the page.
  • -The image processor interprets the image sensor's repeated capture of this contamination as a vertical solid line.
  • -Any ADF scan function now exhibits a vertical line.



adfvertscanline.gif




Suggested Diagnosis and Fix




Step Action 1 Locate the portion of the glass designated for ADF scans.
HINT: The glass location differs by model. This area is often separate from the scanner flatbed. Please reference User's Guide for more information if you are having a difficult time locating this designated area.
2 Perform a visual inspection for any of the following recurring culprits:

  • -Clear adhesive tape
  • -Glue
  • -Ink pen
  • -Paper
  • -Marker
  • -White out
  • -Staples
  • -Environmental dust or dirt
HINT: Ink marks can be especially hard to see and almost translucent at first sight. However, the image sensor (CCD) registers them as a mark. 3 Use a clean, soft, moistened cloth to thoroughly clean and remove any marks or debris. 4 Inspect the underbelly or underside of the ADF for any marks or debris. 5 Perform another scan to see if cleaning the glass alleviated the issue. 6 Repeat the procedure if a vertical line still appears.
Remember! Printing and scanning from the scanner flatbed work fine.
7 This time, place an intentional mark on a blank sheet of paper and take note of its location. Now place that sheet of paper in the ADF and make a copy.
8 Evaluate the distance of the vertical line to the your mark. 9 Inspect that area of the glass for further debris or marks and clean as necessary.




Other Possibilities


If... Then... Vertical lines appear only when printing... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support. Vertical lines appear when you lay the page on the flatbed... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support. Vertical lines appear on ADF-fed printed copies, but they do not appear on scan-to-network [e-mail, FTP, folder (PC), solutions]... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support.


May 01, 2012 | Lexmark International LEX90T9005 Inkjet...

1 Answer

Black lines on copies when using ADF


you must clean the glass (small one)

May 11, 2010 | Sharp AR-M208N Copier

1 Answer

I have a toshiba e-studio 35. When copying through the feeder a line appears on the right side of the copy. Techs dont know how to fix it.


"Normally" that is a simple problem. If it copies clean when you lay your original on the glass......but when using the Automatic Document Feeder (ADF) the copy has a black line then it is clearly something in the ADF scanner. Some machines use a strip of glass that is next to the large glass to scan originals when using the ADF. That strip of glass has to be clean top and bottom. Some models use a scanner in the actual ADF. Either way if it copies fine from the glass, the rest of the copier is eliminated from being the cause.
Is your machine under maintenence contract? Then I would keep calling them until they FIX it!

Oct 22, 2009 | Toshiba e-Studio 350 Copier

1 Answer

When the Automatic Document Feeder (ADF) to copy I


There are two scan modes when copies are made.When you make copies through ADF you originals go past small **** glass located to the left of the main exposure glass.Any small mark on this **** glass( correction fluid mark,ink mark,small scratch,dust particle and so on)will show as a line on your copy.So to get rid of these vertical lines on your copies you need to clean this small exposure glass.

Oct 04, 2009 | Epson Stylus CX9400Fax InkJet Photo...

1 Answer

Very crisp vertical grey line appears (glass clean)


I have the exact same problem. It was there since I first bought the MFC-7840W.
Vertical line appears in scans using the automatic document feeder (ADF).
Vertical line does not appear when scanning single page (placing it directly on the glass -- i.e. not using the ADF).

Cleaning the glass strip for the ADF (or the white pressure bar overhead) does not solve the problem.
The problem does not occur with copies using the ADF (using the COPY button which is basically a scan and print). This would suggest that dust and dirt is not to blame because that would also appear on the copies.
But since I believe a copy is basically a scan plus print, they should be using the same electronics -- a hardware problem on the scan would likely appear on a copy also -- there is some difference between how they accomplish this.
It's definitely not a software issue since it occurs on all versions of Windows and Mac OS X (and multiple computers). It also does not matter whether I "push" the scan to the computer by using the scan button on the MFC... or "pull" the scan from the MFC using the Brother Control Center software.

Aug 12, 2009 | Office Equipment & Supplies

1 Answer

When I use the adf to copy something there are always two lines on one side of the paper (to mark the copy). How can I change the setting for this problem. It does not occur when not using the adf. Thank...


Hi;

If you are only getting the lines when using the ADF , but not when placing the document on the glass then there is some type of debris on the scan glass.

This is a small strip of glass that is independent of the copy glass. This glass should be to the left or right of the copy glass. Just glean this well with alcohol or windex and try copying again from the ADF and see if the problem is gone.

Good Luck

Andrew

Jun 28, 2009 | Canon PIXMA MP830 All-In-One InkJet...

1 Answer

Canon MX850 printer - ADF copy has black line on it


Hello, my name is Steve,.
This is a common problem and an easy fix.
If you lift the ADF / top cover assembly up, you will see a small narrow piece of glass next to the flat-bed glass.

Ths is called a "Slit-glass". The only purpose is to read content from that point by the scanner, The Scanner will sit in the underside of it.

It is dirty. Wipe this with glass cleaner and a soft lint-free cloth. you may need to do this several times. Concentrate the part of the glass were this image problem is just by the orientation of the document you are installing with the direction of the document you are passing through the ADF.

It will take several attempts, but with each try, make a new test from the original document, unyil the problem disappears.

I believe this will solve your problem, Best , Steve

Mar 10, 2009 | Canon PIXMA MX850 multifunction InkJet...

2 Answers

Black lines across copies


try the drum, replace and make a copy

Aug 18, 2008 | Sharp AL 1631 Copier

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