Question about HP Scanjet 8250 Flatbed Scanner

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Vertical blue line from top to bottom

After scanning a vertical blue line appears on the copy. Please let me know how to fix this problem.

Thanks.

Lilian

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  • liliank Nov 07, 2008

    I paid $16 for an advice concerning the blue vertical line. I was told right away that my drivers did not work and to uninstall the program and install it back again and download new drivers. That was a bad advise. I took apart the feeder, cleaned it and the blue line was gone. I should have money back.

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I was told by one of you that the reason was bad drivers and to remove the software and reinstall it again. Bad advise. The blue line is a sign of dust. We cleaned the unit and the blue line dissapeared. I wasted $15.99 for bad service.

Posted on Nov 13, 2008

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Posted on Jan 02, 2017

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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

I have an HP Officejet 6500 wireless printer. If I scan or copy a document through the feeder the scanned or copied document has vertical lines from top to bottom. If I lay the document on the glass and...


Lift the scanner top, then look at the narrow pane of glass. There probably is a spek of dust or ink on it. Clean it with alcohol. I've had to remove the glass, due to the speck being on the undersaide of the glass.

Also, lift the ADF cover and clan the rollers with a damp cloth.

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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.

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I think that you have dry solder joints on either the vertical scan board, the focus board, the line output stage, or the chroma panel. Hope this helps.

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1 Answer

Two black vertical lines appear on copy, pdf, and scan results


  1. Unplug the power cord and the phone line from the wall.
  2. Open the control panel.
  3. Pull the roller lever forward, and then lift the white roller out of the All-In-One.
  4. Note: The scan lens is located under the white roller.
  5. Use a clean, lint-free cloth dampened with water to wipe the white roller and the scan lens.
  6. Reinstall the white roller.
  7. Reconnect the power cord and the phone line.
  8. And then try to copy if get the dame line then its the hardware problem in the printer you must need to replace the scanner unit in the printer ..
Good luck..


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clean the glass of the scanning area, a small dot of debris on the glass produces a vertical line from top to bottom in the feeding direction of the laser printer.

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Try this download this http://www.jscreenfix.com/video.php i burned it to a dvd and it fixed it within a minute.

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