# US 10,369,791 B2 · Ink-jet head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,369,791 B2 - Document ID: US10369791B2 - Status: Granted - Kind: B2 - Application number: 15/913,034 - Filed: 2018-03-06 - Published: 2018-10-11 - Granted: 2019-08-06 - Earliest claimed: 2016-03-23 - Assignees: Brother Kogyo Kabushiki Kaisha - Applicants: Brother Kogyo Kabushiki Kaisha - Inventors: Yasuo Kato; Kyohei Naito - Web page: https://patentgrep.com/patent/US10369791B2 ## CPC - B41J 2/145: Arrangement thereof - B41J 2/14233: {of film type, deformed by bending and disposed on a diaphragm} - B41J 2/1433: {Structure of nozzle plates} - B41J 2/155: for line printing - B41J 2202/20: Modules - B41J 2202/21: Line printing - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract There is provided an ink-jet head including: first and second head chips each formed with two first nozzle arrays extending in a first direction, each of the first nozzle arrays including first nozzles corresponding to a first ink, second nozzles corresponding to a second ink, and third nozzles corresponding to a third ink; third and fourth head chips each formed with two third nozzle arrays extending in the first direction, each of the third nozzle arrays including fourth nozzles corresponding to the fourth ink. The first head chip to the fourth head chip are arranged in parallel in a second direction orthogonal to the first direction. ## Claims ### Claim 1 A head chip comprising: nozzles A arranged along a first direction; nozzles B arranged along the first direction; an electrical terminal located at a position between the nozzles A and nozzles B in a second direction orthogonal to the first direction; and a reservoir formation member formed with a reservoir A communicating with the nozzles A, a reservoir B communicating with the nozzles B, a first communication port communicating with the reservoir A, and a first connection channel connecting the reservoir A and the reservoir B, wherein the reservoir formation member defines a through hole through which the electrical terminal is exposed, and wherein the first connection channel connects the reservoir A and the reservoir B to run around the electrical terminal at on a first end side of the head chip in the first direction. ### Claim 2 (depends on 1) The head chip according to claim 1, further comprising: nozzles C arranged along the first direction; and nozzles D arranged along the first direction, wherein the electrical terminal is located between the nozzles C and the nozzles D in the second direction, wherein the reservoir formation member is formed with a reservoir C communicating with the nozzles C, a reservoir D communicating with the nozzles D, a second communication port communicating with the reservoir C, and a second connection channel connecting the reservoir C and the reservoir D, and wherein the second connection channel connects the reservoir C and the reservoir D to run around the electrical terminal at on a second end side of the head chip in the first direction. ### Claim 3 (depends on 2) The head chip according to claim 2, further comprising: nozzles E arranged along the first direction; and nozzles F arranged along the first direction, wherein the electrical terminal is located between the nozzles E and nozzles F in the second direction, wherein the reservoir formation member is formed with a reservoir E communicating with the nozzles E, a reservoir F communicating with the nozzles F, a third communication port communicating with the reservoir E, and a fourth communication port communicating with the reservoir F, wherein the nozzles E are located between the nozzles A and the nozzles C in the first direction, and wherein the nozzles F are located between the nozzles B and the nozzles D in the first direction. ### Claim 4 An ink-jet head comprising: a head chip comprising; nozzles A arranged along a first direction; nozzles B arranged along the first direction; an electrical terminal located at a position between the nozzles A and nozzles B in a second direction orthogonal to the first direction; and a reservoir formation member formed with a reservoir A communicating with the nozzles A, a reservoir B communicating with the nozzles B, a first communication port communicating with the reservoir A, and a first connection channel connecting the reservoir A and the reservoir B, wherein the reservoir formation member defines a through hole through which the electrical terminal is exposed, and wherein the first connection channel connects the reservoir A and the reservoir B to run around the electrical terminal at on a first end side of the head chip in the first direction. ### Claim 5 (depends on 4) The ink-jet head according to claim 4, further comprising a wiring substrate connected to the electrical terminal. ### Claim 6 (depends on 5) The ink-jet head according to claim 5, further comprising a channel member formed with a first ink channel communicating with the first connection port, and wherein the wiring substrate is formed with a first through hole through which the first ink channel runs. ### Claim 7 (depends on 6) The ink-jet head according to claim 6, wherein the head chip further comprises nozzles C arranged along the first direction and nozzles D arranged along the first direction, wherein the reservoir formation member is formed with a reservoir C communicating with the nozzles C, a reservoir D communicating with the nozzles D, a second communication port communicating with the reservoir C, and a second connection channel connecting the reservoir C and the reservoir D, and wherein the second connection channel connects the reservoir C and the reservoir D to run around the electrical terminal at on a second end side of the head chip in the first direction. ### Claim 8 (depends on 7) The ink-jet head according to claim 7, wherein the channel member is formed with a second ink channel communicating with the second connection port, and wherein the wiring substrate is formed with a second through hole through which the second ink channel runs.