Ink jet printing head and ink jet printing apparatus using the same

An ink jet printing head attachable/detachable to/from an ink jet printing apparatus, comprising:

• a connection terminal group comprising a plurality of connection terminals for carrying out an electrical connection by contacting a plurality of connection terminals in the ink jet printing apparatus when the head is mounted on the ink jet printing apparatus;
• and
• a print element substrate having ink ejection openings and elements for generating energy to eject ink from the ink ejection openings in response to a drive signal transmitted from the ink jet printing apparatus via the connection terminals of the connection terminal group,
• wherein the connection terminal group is arranged in a planar area,
• wherein the connection terminals positioned in at least three corners of a terminal arranging area of the connection terminal group arranged in the planar area are used as detection terminals for detecting an electrical connection state between the ink jet head and the ink jet printing apparatus,
• wherein at least one of the connection terminals positioned in the at least three corners is for a type of signal different from the drive signal, and
• wherein the different type of signal is a signal related to a temperature sensor provided in the ink jet printing head for carrying out temperature detection of the ink jet printing head.

An ink jet printing head attachable/detachable to/from an ink jet printing apparatus, comprising:

• a connection terminal group comprising a plurality of connection terminals for carrying out an electrical connection by contacting a plurality of connection terminals in the ink jet printing apparatus when the head is mounted on the ink jet printing apparatus;
• and
• a print element substrate having ink ejection openings and elements for generating energy to eject ink from the ink ejection openings in response to a drive signal transmitted from the ink jet printing apparatus via the connection terminals of the connection terminal group,
• wherein the connection terminal group is arranged in a planar area,
• wherein the connection terminals positioned in at least three corners of a terminal arranging area of the connection terminal group arranged in the planar area are used as detection terminals for detecting an electrical connection state between the ink jet head and the ink jet printing apparatus,
• wherein the print element substrate comprises a circuit for confirming connection states between the connection terminals positioned in the at least three corners and connection terminals corresponding thereto in the ink jet printing apparatus, and
• wherein the connection terminal group includes an output terminal for a signal outputted from the circuit for confirming the connection state.

An ink jet printing head attachable/detachable to/from an ink jet printing apparatus, comprising:

• a connection terminal group comprising a plurality of connection terminals for carrying out an electrical connection by contacting a plurality of connection terminals in the ink jet printing apparatus when mounting on the ink jet printing apparatus;
• a print element substrate having ink ejection openings and elements for generating energy to eject ink from the ink ejection openings in response to a drive signal transmitted from the ink jet printing apparatus via the connection terminals of the connection terminal group;
• and
• an ink tank for containing ink to be supplied to the print element substrate, the ink tank being integrated with the ink jet printing head,
• wherein the print element substrate is disposed on one of surfaces of the ink jet printing head,
• wherein the connection terminal group is arranged in a planar area on a side surface of the ink jet printing head assuming that the surface on which the print element substrate is disposed is a bottom surface of the ink jet printing head area, and
• wherein the connection terminals positioned in at least three corners of a terminal arranging area of the connection terminal group arranged in the planar area are used as detection terminals for detecting an electrical connection state between the ink jet head and the ink jet printing apparatus.

An ink jet printing apparatus to/from which an ink jet printing head is attachable/detachable, comprising:

• a connection terminal group in a printing apparatus side, the connection terminal group comprising a plurality of connection terminals for carrying out an electrical connection with the printing head by contacting a plurality of connection terminals in a printing head side when the ink jet head is mounted on the ink jet printing apparatus;
• and
• a notifying unit for notifying of an abnormality,
• wherein the connection terminal group in the printing apparatus side is arranged in a planar area,
• wherein the connection terminals positioned in at least three corners of a terminal arranging area of the printing apparatus side connection terminal group arranged in the planar area are used as detection terminals for detecting an electrical connection state between the ink jet printing head and the ink jet printing apparatus, and
• wherein the notifying unit notifies of an abnormality in a case where a contact between one of the connection terminals positioned in the at least three corners and a connection terminal corresponding thereto in the printing head side is not detected.