Patent ID: 6749294
Filing Date: 2004-06-15
Classification: B41J

Abstract:
A printer, comprising:a carriage; and a print cartridge supported by said carriage, said print cartridge including a cartridge body defining a chamber for printing fluid and a printhead adapted to eject droplets of the printing fluid, said cartridge body including a plurality of keying locations arrayed in a determined pattern on said cartridge body, each of said keying locations having one of a positive value represented by an outwardly extending keying feature and a null value represented by said keying location being free of such a keying feature, and said carriage including a keying member having a plurality of key engagement structures arrayed in a certain pattern complementary to said determined pattern, wherein said keying member of said carriage is configured to move and engage said keying locations of said print cartridge so that said keying locations inter-engage with said key engagement structures of said keying member.