Question about Canon i9900 InkJet Photo Printer

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Canon i9900 black ink smudging

When I print black and white photos and sometimes color pages, I get black smudges on the leading edge of the paper. I also get smudging on the maintenance printouts, but to a lesser degree than on normal printed sheets. Also, when I print black and white photos on photographic paper, both matte and glossy, I get spots where no ink is deposited. It appears as though there was a series of small bubbles about 1/16" to 1/8" formed and then burst without depositing any ink on the paper. This occurs only on the lower half of the photo and they run parallel to the direction the paper (the 11" direction) is advancing through the printer. I've used the maintenance cleaning and head realignment functions several times with no success.

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  • bkrand Oct 23, 2008

    The black ink runs on some pictures. Seems like the first picture after I turn it on is good, but as it heats up, the ink begins to run. This printer has been great until recently. I bought a new print head unit but it still does this. What are the proper materials to clean the parts of the printer?

  • gentlemanbil Oct 24, 2008

    In response, I use Canon inks ONLY! I don't use Canon paper, but that's not the problem. I need to know how to clean the area where the paper enters just prior to the ink being applied to the paper. In addition, I need to know specifically how to replace the ink pads that absorb any excess ink. I've had this printer for a long time, and I'm sure by now those pads are saturated. When I print any output other than photos on high quality standard non-photo paper this condition doesn't occur. Since I've had this printer so long, I'm seriously considering purchasing a new one (though I'd hate to do this because it's been a great printer) as I'm told replacing the ink absorbing pads is difficult and expensive. I'm quite adept at repairing just about anything, and I know I can replace those pads if I could just get someone to tell me how to do it. Thanks!

  • bkrand May 11, 2010

    I only use Canon ink cartridges. I use the highest quality paper, usually Kodak, some Canon and some HP. I'll try only Canon paper and see if that helps. I hadn't thought of that. Thanks for the advice.



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Ok, What cartridges are you using, Are the Canon cartridges?
What paper are you using, is it Canon paper?

If you are to both of these it could be wise ordering a printhead, but this is mostly caused in the uk by None Canon Paper.

Please let me know what you are using?

Posted on Oct 24, 2008

  • feeldebones Oct 24, 2008

    right the ink pads are very easy to replace but you need to find some one who will sell them to you. the prob being is the machine is old and even the i9950 is discontinued and that is the upgrade to i9900.

    I would maybe think about buying a Pro9000 which is a upgrade to the i9950, These machine are very good as i have one myself.

    i can give you the part numbers for these pads if you need them, if you want a service team to replace them it will cost more then the machine is worth.

    once you have replaced the pads, you will need to reset the counter through service.

    hope this helps



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Sorry, steve, that you are experiencing this problem.

According to's website regarding the i9900 InkJet Photo Printer:

Why color ink may be used when printing in black and white Even when printing in black and white, color ink is used for the following reasons:
  1. Automatic cleaning of the print head.

    To prevent the print head nozzles from clogging, the print head is automatically cleaned periodically. At that time, a small amount of each color ink is consumed.

    Therefore, although printing in black and white is performed, color ink is also consumed.

  2. Color inks may be used to create black.

    When printing in grayscale or on photo paper or when duplex printing, although printing appears in black and white, the color black may be created using the three (cyan, magenta, and yellow) color inks. Printers without a pigment black tank / cartridge will print black / grayscale will create a composite black using color ink even on plain paper.

    Therefore, although printing in black and white is performed, color ink may be consumed.
  3. In order to keep the heavy black ink from smearing on the page or in the printer, color ink is used when duplex printing to help create black text.

I might suggest taking out the color ink cartridges leaving only black there, but some printers don't take kindly to this. So, you may have to further experiment with magenta, cyan, and yellow to make it at least seem b&w to your best eye's judgment.

Good luck on this.

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4 - black ink smudges (1/32" wide x 1/16" high) in right margin

Very nice trouble shooting. The image defect you describe point to the OPC or drum unit this is essentially the toner cart. In your case black. Measureing the distance between repetitive defects is a sure way of diagnosing problems such as yours. Again nice work.

Google repetitive defect ruler for your model to help in the future.

Hope this helps

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The pads aren't easy to get at, but you can blot them with a paper towel. Gummy, half-dried ink dissolves in rubbing alcohol, and you can soak a paper towel or a cotton ball with alcohol and wipe down the area. I've had good luck soaking the pads with alcohol, then blotting them dry with a rag.

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Do a thorough manual cleaning of printerheads (where the cartridges sit). Many printers are notorious for clogged nozzles and the ink dries on he prinheads until it becomes a bandind issue or ladders appear, smudges too. Use a proper cleaning solution and cotton buds, until most colour is gone off cotton buds. Reinsert cartridges and try again.

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