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LF: Schematic for HP inkjet printer cartridges

Discussion in 'Electronic Repair' started by Kirk, Apr 15, 2004.

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  1. Kirk

    Kirk Guest

    Yes that's right, HP inkjet printer cartridges. Need to know what the
    circuits are on the cartridge from the contacts to the print head. Tried to
    meter this out and it's not making much sense of the readings using an ohm

    Email me if you need more info. remove the _nospam_


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  2. Kirk

    Kirk Guest

    Need just about any known cartridge that is still in use. Any one or all of
    these if anyone can. HP will not give out this information because they don
    not want anyone remanufacturing used cartridges.

  3. Beau Schwabe

    Beau Schwabe Guest

    Are you kidding me?

    There is a propietary IC that for the most part consists of several
    OP-Amps designed to drive inductive loads. I know this because I
    did a metal spin in silicon for a redesign to slightly improve the
    performance of a particular cartridge, but beyond that I don't think
    your going to have much luck. If you just want a pin definition of
    what is on the cartridge itself, then there should be a speck sheet
    out there somewhere. If HP is not willing to work with you then
    perhaps you can find a third party that has a printer that can use an
    HP cartridge. You may have to reverse engineer it from the printer
    end rather than from the cartridge, but be warned that there is
    probably a good reason why HP is not disclosing information to you.
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