PRINTER, PRINTING MATERIAL CARTRIDGE, PRINTING MATERIAL CONTAINER ADAPTER AND CIRCUIT BOARD.

摘要

A printing material cartridge includes: a storage device; a plurality of first terminals connected to the storage device and supplied with power-supply voltage and signals for making the storage device operate from a printer; and a plurality of second terminals used for detecting an installed state of the printing material cartridge at a cartridge installation part. The first terminals have a plurality of first contact parts coming in contact with corresponding terminals of the printer in a state where the printing material cartridge is correctly installed at the cartridge installation part. The second terminals have a plurality of second contact parts coming in contact with corresponding terminals of the printer in the state where the printing material cartridge is correctly installed at the cartridge installation part. The first contact parts and the second contact parts are arranged to form a first row and a second row. Four of the second contact parts are positioned at both ends of the first row and the second row.