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Canon BCI-24 cartridges - ink detection

Discussion in 'Electronic Repair' started by Franc Zabkar, Jun 2, 2006.

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  1. Franc Zabkar

    Franc Zabkar Guest

    How do Canon inkjet printers determine the ink level in cartridges
    such as the BCI-24C and BCI-24BK? These are merely plastic, foam
    filled ink tanks. When the cover is opened, the printer asks whether a
    cartridge has been changed, so it appears that the ink levels can be
    initialised at this time. Does the printer's uP then keep a count of
    the "squirts" for each colour, or does it somehow sense the inkflow,
    or absence thereof, through the nozzles? Maybe it senses a rise in the
    temperature of the printhead? I ask this because I've started
    refilling my cartidges and don't want to run the risk of running my
    printhead dry.

    - Franc Zabkar
  2. Dunno about the 24's but our i865 uses similar tanks which I have changed to
    generic ones that can be refilled in position, the detection still works the
    same so I guess it must be something along the lines you mention. There
    certainly doesnt seem to be anything that shows on the tanks.
  3. Lee

    Lee Guest

    The drivers for the printer track the number of droplets of ink and do a
    count down from the known capacity of the tank.

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  4. Puckdropper

    Puckdropper Guest

    I remember reading somewhere that some drivers simply "guess" at how much
    ink should be used and use that guesstimate to tell you when to replace
    the ink cartridges. Perhaps what you described is the same thing
    interpreted differently.

    I kinda miss the old days of bubble jets where they simply ran out of
    ink. No more text on the page, the ink's done. My HP gives me an
    "unknown error" that I've since figured out to mean "I think I'm out of


    Old computers are getting to be a lost art. Here at Uncreative Labs, we
    still enjoy using the old computers. Sometimes we want to see how far a
    particular system can go, other times we use a stock system to remind
    ourselves of what we once had.

    To email me directly, send a message to puckdropper (at)
  5. Franc Zabkar

    Franc Zabkar Guest

    If you mean software drivers, then I don't think so. I have a
    multifunction printer/scanner/copier which can copy in standalone

    - Franc Zabkar
  6. Lee

    Lee Guest

    No, no mis-interpretation! I used to be a Canon dealer.
    Lee in Toronto

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  7. Lee

    Lee Guest

    Franc..... the droplet count is stored on an eprom in the printer and
    the drivers, when connected, read this information. This information
    count can be reset by holding down two buttons on the panel, powering on
    with the cord.
    Lee in Toronto

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