# US 2014/0198158 A1 · Liquid ejection head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0198158 A1 - Document ID: US20140198158A1 - Status: Published application - Kind: A1 - Application number: 14/123,947 - Filed: 2012-05-28 - Published: 2014-07-17 - Earliest claimed: 2011-06-07 - Assignees: Canon Kabushiki Kaisha - Inventors: Masataka Sakurai; Ken Tsuchii - Web page: https://patentgrep.com/patent/US20140198158A1 ## CPC - B41J 2/14072: {Electrical connections, e.g. details on electrodes, connecting the chip to the outside...} - B41J 2/14: Structure thereof {only for on-demand ink jet heads} - B41J 2/14145: {Structure of the manifold} - B41J 2/1404: {Geometrical characteristics} - B41J 2002/14387: {Front shooter} - B41J 2002/14467: {Multiple feed channels per ink chamber} - B41J 2002/14491: {Electrical connection} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A liquid ejection head includes a substrate including a first supply port row in which a plurality of supply ports are arranged, a first energy generating element row in which a plurality of energy generating elements are arranged, a second supply port row in which a plurality of supply ports are arranged, a second energy generating element row in which a plurality of energy generating elements are arranged, a first wiring layer and a second wiring layer for driving the energy generating elements, and a through hole configured to electrically connect the first wiring layer and the second wiring layer. The first energy generating element row, the first supply port row, the second supply port row, and the second energy generating element row are arranged in parallel in this order and the through hole is arranged between the first supply port row and the second supply port row. ## Claims ### Claim 1 A liquid ejection head comprising: a substrate including a first supply port row which supplies liquid and in which a plurality of supply ports made up of penetrated holes are arranged, a first energy generating element row in which a plurality of energy generating elements that generates energy used to eject liquid supplied from the first supply port row are arranged, a second supply port row which supplies liquid and in which a plurality of supply ports made up of penetrated holes are arranged, a second energy generating element row in which a plurality of energy generating elements that generates energy used to eject liquid supplied from the second supply port row are arranged, a first wiring layer configured to drive the energy generating elements, a second wiring layer configured to drive the energy generating elements, and a through hole configured to electrically connect the first wiring layer and the second wiring layer, wherein the first energy generating element row, the first supply port row, the second supply port row, and the second energy generating element row are arranged in parallel in this order and the through hole is arranged between the first supply port row and the second supply port row. ### Claim 2 (depends on 1) The liquid ejection head according to claim 1, wherein a third supply port row configured to supply liquid to the first energy generating element row is arranged on a side opposite to a side on which the first supply port row is arranged with respect to the first energy generating element row. ### Claim 3 (depends on 1) The liquid ejection head according to claim 1, wherein a fourth supply port row configured to supply liquid to the second energy generating element row is arranged on a side opposite to a side on which the second supply port row is arranged with respect to the second energy generating element row. ### Claim 4 (depends on 1) The liquid ejection head according to claim 1, wherein a plurality of the through holes are also formed between supply ports included in the first supply port row in addition to between the first supply port row and the second supply port row. ### Claim 5 (depends on 1) The liquid ejection head according to claim 1, wherein a plurality of the through holes are also formed between supply ports included in the second supply port row in addition to between the first supply port row and the second supply port row. ### Claim 6 A liquid ejection head comprising: a substrate in which a first area which penetrates the substrate in a thickness direction and where a row of supply ports is provided and a second area where a row of energy generating elements is provided are alternately arranged; an orifice plate which is provided on a surface of the substrate on which the energy generating elements are formed and in which ejection orifices configured to eject liquid supplied from the supply ports are formed; a plurality of through holes configured to electrically connect a first wiring layer and a second wiring layer provided in the substrate; and wherein at least one of a plurality of the first areas includes a conducting section provided with the plurality of through holes, two rows of the supply ports are provided in the conducting section, and the plurality of though holes are arranged between the two rows of the supply ports. ### Claim 7 (depends on 6) The liquid ejection head according to claim 6, wherein the plurality of though holes are arranged linearly. ### Claim 8 (depends on 6) The liquid ejection head according to claim 6, wherein three first areas and two second areas are included and, when the first areas and the second areas are alternately arranged, the first area located in the center is the conducting section. ### Claim 9 (depends on 6) The liquid ejection head according to claim 6, wherein five first areas and four second areas are included and, when the first areas and the second areas are alternately arranged, the first area located in the center is the conducting section. ### Claim 10 (depends on 6) The liquid ejection head according to claim 6, wherein the plurality of though holes are covered by an insulator. ### Claim 11 (depends on 10) The liquid ejection head according to claim 10, wherein the plurality of though holes are covered by a part of the orifice plate formed of an insulator. ### Claim 12 (depends on 6) The liquid ejection head according to claim 6, wherein sensor wiring adjacent to each supply port is provided in the conducting section.