Patent ID: 9370934
Filing Date: 2016-06-21
CPC Classification: B41J,G03G

Claim Text:
1. A circuit board electrically connectable to a plurality of apparatus-side terminals of a cartridge attachment unit of a printing apparatus, comprising: a plurality of first terminals through which a power source voltage and signals for operating a memory device are supplied from the printing apparatus; and a plurality of second terminals to be used for detecting connection conditions between the plurality of apparatus-side terminals and the circuit board, wherein the plurality of first terminals have a plurality of first contact portions that get in contact with corresponding apparatus-side terminals, the plurality of second terminals have a plurality of second contact portions that get in contact with corresponding apparatus-side terminals, the plurality of first and second contact portions are arranged so as to form a first row and a second row, and four contact portions among the plurality of second contact portions are placed at both ends of the first and second rows, respectively.