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Replaceable part with integral memory for usage, calibration and other data

  • US 5,699,091 A
  • Filed: 01/08/1996
  • Issued: 12/16/1997
  • Est. Priority Date: 12/22/1994
  • Status: Expired due to Term
First Claim
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1. A replaceable ink cartridge for an ink jet print head in an ink jet printer including processor means for controlling said ink jet printer, said ink jet printer including a receptacle for receiving said ink cartridge, said receptacle including first connector means coupled to said processor means;

  • said ink cartridge comprising;

    an ink reservoir for holding a supply of ink;

    second connector means for mating with said first connector means upon insertion of said ink cartridge into said receptacle;

    fluid coupling means for connecting the ink reservoir to said ink jet print head upon insertion of said ink cartridge into said receptacle; and

    a serial access memory connected to said second connector means and including only a single data input/output wire, said memory thereby made accessible to said processor means, said serial access memory storing data at least indicative of usage of ink in said ink reservoir.

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