Ink tank

An ink tank attachable to and detachable from an attachment section of an ink jet printing apparatus, the attachment section being provided with a plurality of ink receiving sections, a first fitting section and a second fitting section to be engaged with the ink tank, an electric contact, and a board-contact positioning section, the ink tank comprising:

• a housing;
• a plurality of ink retaining members each of which is housed in the housing and each of which retains ink;
• a plurality of supply ports each configured to abut respective ones of the plurality of ink receiving sections;
• a board being connectable to the electric contact;
• and
• a board attachment positioning section disposed on a bottom face of the housing and formed as a protrusion to be engaged with the board-contact positioning section,
• wherein each of the plurality of supply ports abuts respective ones of the ink receiving sections at respective abutting centers of the plurality of supply ports, and
• wherein the plurality of supply ports and the board attachment positioning section are provided on the bottom face of the housing such that the board attachment positioning section is located on one area of two areas defined by dividing the bottom face by a centerline extending in a longitudinal direction of the housing through a center of width of the bottom face and the abutting center of the supply port provided closest to the board attachment positioning section with respect to the longitudinal direction is located on the other area of the two areas.

An ink tank attachable to and detachable from an attachment section of an ink jet printing apparatus, an electric contact, and a board-contact positioning section, the ink tank comprising:

• a housing;
• an ink retaining member which is housed in the housing and retains ink;
• a supply port;
• a board;
• and
• a board attachment positioning section disposed on a bottom face of the housing and formed as a protrusion,
• wherein the supply port and the board attachment positioning section are provided on the bottom face of the housing such that the board attachment positioning section is located on one area of two areas defined by dividing the bottom face by a centerline extending in a longitudinal direction of the housing through a center of width of the bottom face and the abutting center of the supply port is located on the other area of the two areas.

An ink tank attachable to and detachable from an attachment section of an ink jet printing apparatus, an electric contact, and a board-contact positioning section, the ink tank comprising:

• a housing;
• an ink retaining member which is housed in the housing and retains ink;
• a plurality of supply ports;
• a board;
• and
• a board attachment positioning section disposed on a bottom face of the housing and formed as a protrusion to be engaged with the board-contact positioning section,
• wherein the plurality of supply ports and the board attachment positioning section are provided on the bottom face of the housing such that the board attachment positioning section is located on one area of two areas defined by dividing the bottom face by a centerline extending in a longitudinal direction of the housing through a center of width of the bottom face and the abutting center of the supply port provided closest to the board attachment positioning section with respect to the longitudinal direction is located on the other area of the two areas.