Printing apparatus, printing material cartridge, adaptor for printing material container, and circuit board

A printing material cartridge attachable to a cartridge attachment unit of a printing apparatus having a plurality of apparatus-side terminals, comprising:

• a memory device;
• a plurality of first terminals through which a power source voltage and signals for operating the memory device are supplied from the printing apparatus;
• and
• a plurality of second terminals to be used for detecting attachment conditions of the printing material cartridge in the cartridge attachment unit,
• wherein the plurality of first terminals have a plurality of first contact portions that get in contact with corresponding apparatus-side terminals when the printing material container is properly attached to the cartridge attachment unit,
• the plurality of second terminals have a plurality of second contact portions that get in contact with corresponding apparatus-side terminals when the printing material container is properly attached to the cartridge attachment unit,
• 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.

A printing material container adapter to which a printing material container is to be attached, the adapter being attachable to a cartridge attachment unit of a printing apparatus having a plurality of apparatus-side terminals, the adapter comprising:

• a memory device;
• a plurality of first terminals through which a power source voltage and signals for operating the memory device are supplied from the printing apparatus;
• and
• a plurality of second terminals to be used for detecting attachment conditions of the printing material container adapter in the cartridge attachment unit,
• wherein the plurality of first terminals have a plurality of first contact portions that get in contact with corresponding apparatus-side terminals when the printing material container adapter is properly attached to the cartridge attachment unit,
• the plurality of second terminals have a plurality of second contact portions that get in contact with corresponding apparatus-side terminals when the printing material container adapter is properly attached to the cartridge attachment unit,
• 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.

A printing apparatus comprising:

• a cartridge attachment unit to which a printing material cartridge is attached;
• a printing material cartridge attachable to the cartridge attachment unit;
• an attachment detection circuit for detecting attachment conditions of the printing material cartridge;
• and
• apparatus-side terminals,
• wherein the printing material cartridge comprising:
• a memory device;
• a plurality of first terminals through which a power source voltage and signals for operating the memory device are supplied from the printing apparatus;
• and
• a plurality of second terminals to be used for detecting attachment conditions of the printing material cartridge in the cartridge attachment unit,
• wherein the plurality of first terminals have a plurality of first contact portions that get in contact with corresponding apparatus-side terminals when the printing material container is properly attached to the cartridge attachment unit,
• the plurality of second terminals have a plurality of second contact portions that get in contact with corresponding apparatus-side terminals when the printing material container is properly attached to the cartridge attachment unit,
• 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.