# US 11,897,262 B2 · Liquid ejecting apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,897,262 B2 - Document ID: US11897262B2 - Status: Granted - Kind: B2 - Application number: 17/656,257 - Filed: 2022-03-24 - Published: 2022-09-29 - Granted: 2024-02-13 - Earliest claimed: 2021-03-26 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Atsushi Shimura - Web page: https://patentgrep.com/patent/US11897262B2 ## CPC - B41J 2/04588: {using a specific waveform} - B41J 2/0451: {for detecting failure, e.g. clogging, malfunctioning actuator} - B41J 2/04541: {Specific driving circuit} - B41J 2/04581: {controlling heads based on piezoelectric elements} - B41J 2/04593: {Dot-size modulation by changing the size of the drop} - B41J 2/04596: {Non-ejecting pulses} - B41J 2/145: Arrangement thereof - B41J 2002/14362: {Assembling elements of heads} - B41J 2002/14491: {Electrical connection} - B41J 2202/19: Assembling head units - B41J 2202/20: Modules - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A liquid ejecting apparatus includes a print head, in which the print head includes a substrate having first, second, third and fourth sides, a first surface, a second surface, a connector, a first integrated circuit, and a second integrated circuit, the connector includes a first end with a shortest distance to the third side and a second end with a shortest distance to the fourth side and is provided on the first surface so that a plurality of terminals are arranged along the first side, the first integrated circuit is provided on the second surface, a shortest distance between the first end and the first integrated circuit is shorter than a shortest distance between the second end and the first integrated circuit, and a shortest distance between the second end and the second integrated circuit is shorter than a shortest distance between the first end and the second integrated circuit. ## Claims ### Claim 1 A liquid ejecting apparatus comprising: a print head that ejects a liquid; a digital signal output circuit that outputs a digital signal to the print head; and a liquid accommodating container that supplies the liquid to the print head, wherein the print head includes a supply port to which the liquid is supplied from the liquid accommodating container, a nozzle plate having a plurality of nozzles that eject the liquid, a substrate having first and second sides positioned opposite to each other, third and fourth sides positioned opposite to each other, a first surface, and a second surface different from the first surface, a connector that has a plurality of terminals to which the digital signal is input, a first integrated circuit to which the digital signal is input via the connector and that outputs an abnormality detection signal indicating presence or absence of an abnormality in the print head, and, a second integrated circuit electrically coupled to the first integrated circuit, the connector includes a first end with a shortest distance to the third side and a second end with a shortest distance to the fourth side and is provided on the first surface so that the plurality of terminals are arranged along the first side, the first integrated circuit is provided on the second surface, a shortest distance between the first end and the first integrated circuit is shorter than a shortest distance between the second end and the first integrated circuit, and a shortest distance between the second end and the second integrated circuit is shorter than a shortest distance between the first end and the second integrated circuit. ### Claim 2 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the supply port is positioned above the substrate in a vertical direction. ### Claim 3 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the substrate is positioned so that the first surface faces upward and the second surface faces downward in a vertical direction. ### Claim 4 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the substrate is positioned so that the first surface is orthogonal to a vertical direction. ### Claim 5 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the print head has an ejecting module that includes the nozzle plate, and the first integrated circuit is positioned between the substrate and the ejecting module. ### Claim 6 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the print head has a liquid flow path that communicates with the supply port, and the liquid flow path passes through a penetrating portion that penetrates the first surface and the second surface of the substrate. ### Claim 7 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the first integrated circuit is a surface mount component. ### Claim 8 (depends on 7) The liquid ejecting apparatus according to claim 7, wherein the first integrated circuit and the substrate are electrically coupled to each other via a bump electrode. ### Claim 9 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the first integrated circuit outputs a low-level abnormality detection signal when an abnormality occurs in the print head. ### Claim 10 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the first integrated circuit outputs a high-level abnormality detection signal when an abnormality occurs in the print head. ### Claim 11 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the digital signal includes a signal that defines an ejection timing of the liquid. ### Claim 12 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the digital signal includes a clock signal. ### Claim 13 (depends on 1) The liquid ejecting apparatus according to claim 1, further comprising a trapezoidal waveform signal output circuit that outputs a trapezoidal waveform signal including a trapezoidal waveform having a voltage value larger than that of the digital signal, wherein the trapezoidal waveform signal is input to the connector. ### Claim 14 (depends on 1) The liquid ejecting apparatus according to claim 1, wherein the second integrated circuit includes an oscillation circuit that defines an operation timing of the first integrated circuit.