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There is a black line acroos the page on all copies from a Canon PC745 copier

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  • Bobrcr Nov 09, 2008

    The line is 5/10" wide and 11' across the page. It is light enough so that you can still read the print under the line. I have removed and reinstalled the cartridge which is almost brand new. Please advise details of any special cleaning if appropriate.

  • Bobrcr Nov 09, 2008

    This is a copier not a printer. It cannot be connected to a PC

  • Bobrcr Nov 09, 2008

    What chemical should be used to clean the optical mirror?
    Where is the optical mirror?

  • Bobrcr Nov 09, 2008

    The question about where the optical mirror is located has not been answered. I have over 30 years experience in working on copiers, all of them much larger than this one.

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The mirror is inside the copier and obviously you have to open it.

Lens and Mirrors: These are the components of the conventional analog copier that convey the scanned image from the glass to the photoconductor drum. The mirrors direct the light through the lens (for focusing or magnification) to the drum.

Tada! it's near the drum.

Posted on Nov 09, 2008

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Try printing a test page to align and clean the printer cartridges and if it is still there, try un-installing and re-installing the software that came with the printer. To print a test page, go to control panel, go to printers and faxes, find your printer on the list, right click on it and go to properties, and on that list go all the way down to the bottom page and click print test page.
To un-install the software, go to control panel, go to add or remove programs, find your printing program on the list and select remove, and after removing, restart your computer and put the software back on. It should work then.

Posted on Nov 09, 2008

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There is something not properly lined up. Make sure the cartrige is inserted correctly. You could contact cannon and see what they say. I really need more info such as size, location, and qualities of the line.

Posted on Nov 09, 2008

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  • Master
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Is it always in the same position on the paper, or does it vary?

Posted on Nov 09, 2008

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  • Swilin Sampson
    Swilin Sampson Nov 09, 2008

    You could try cleaning the optical mirror, rollers and fuser roller first..

  • Swilin Sampson
    Swilin Sampson Nov 09, 2008

    It could also be that there is a fault with the drum unit which will have to be replaced. This usually happens on units that have more than 50,000 copies made. The drum could have a dent, etc where the toner gets stuck and produces the streaks. If the streaks occur more or less in the same area on every page, then this is most likely the issue.

    This will require a replacement of the drum, for which a service call will be required.


  • Swilin Sampson
    Swilin Sampson Nov 09, 2008

    @ jazzboy : THIS IS NOT A PRINTER.

  • Swilin Sampson
    Swilin Sampson Nov 09, 2008

    Best would be to use isopropyl alcohol on a cotton swab. Dont saturate it though! However, if you are not familiar with opening up copiers, I wouldn't recommend this.

    In all likelihood, its the drum unit and will have to be replaced..


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