Patent ID: 6290346
Filing Date: 2001-09-18
Classification: B41J

Abstract:
An inkjet print cartridge which is mountable on a printer carriage, comprising:a housing;a printhead on said housing;an ink reservoir in said housing and in communication with said printhead;an electrical interconnect on said housing and coupled to said printhead for activating said printhead to eject ink;a latching component on said housing for holding the print cartridge in a fully mounted position such that said electrical interconnect is in conductive engagement with a carriage interconnect; anda mechanical key on said housing formed into a predetermined pattern having a plurality of columns with each column capable of defining one or multiple bit positions such that at least one of said columns acts as a barrier preventing the print cartridge from staying in the fully mounted position in certain non-compatible printer carriages, said plurality of columns including at least one column capable of defining at least three different bit positions.