# US 12,214,595 B2 · Liquid container > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,214,595 B2 - Document ID: US12214595B2 - Status: Granted - Kind: B2 - Application number: 17/936,174 - Filed: 2022-09-28 - Published: 2023-03-30 - Granted: 2025-02-04 - Earliest claimed: 2022-09-28 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Jun Shimazaki; Azusa Takagi; Kazuyoshi Mizuno; Shigenori Nakagawa - Web page: https://patentgrep.com/patent/US12214595B2 ## CPC - B41J 2/175: Ink supply systems {; Circuit parts therefor} - B41J 2/17513: {Inner structure} - B41J 2/17523: {Ink connection} - B41J 2/17546: {electronically} - B41J 2/17553: {Outer structure} - B41J 2/17563: {Ink filters} - B41J 2/17596: {Ink pumps, ink valves} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A liquid container connected to a liquid ejection apparatus for ejecting a liquid, includes a container for containing liquid and a filter section for collecting foreign matter, an injection port for injecting the liquid into the container and a lead out port for leading out the liquid from the container are opened in the container, and the filter part is positioned in the injection port. ## Claims ### Claim 1 A liquid container to be connected to a liquid ejection apparatus configured to eject liquid, the liquid container comprising: a container configured to contain liquid; and a filter section configured to collect foreign matter, wherein an injection port for injecting liquid into the container and a lead out port for leading liquid out from the container are opened in the container, the liquid container further comprises: a lead out section configured to be connected to the liquid ejection apparatus; a valve section located between the lead out port and the lead out section and configured to open and close; and a frame supporting the container from below, the filter section is located in the injection port, the lead out section is located on a surface of the liquid container that faces forward and leads the liquid led out from the lead out port to the liquid ejection apparatus, the frame defines an externally accessible accommodation space below the container, and the valve section is located in the accommodation space. ### Claim 2 (depends on 1) The liquid container according to claim 1, wherein the filter section includes a primary filter and a secondary filter through which passes liquid that passed through the primary filter and a mesh size of the primary filter is coarser than a mesh size of the secondary filter. ### Claim 3 (depends on 1) The liquid container according to claim 1, wherein the container has a front wall and a visual check section for visually checking a liquid level of the contained liquid, the injection port is located at an upper side of the container and at a front side of the container, and the visual check section is located in the front wall. ### Claim 4 (depends on 3) The liquid container according to claim 3, further comprising: a cover that covers the container so as to expose at least the visual check section. ### Claim 5 (depends on 4) The liquid container according to claim 4, further comprising: a sub-filter section located between the lead out port and the lead out section, wherein the sub-filter section is located in the accommodation space. ### Claim 6 (depends on 5) The liquid container according to claim 5, wherein: the frame has an attachment plate to which the lead out section is attached, the attachment plate is located below the front wall and extends so as to be continuous with the front wall, the container has a lower wall, and the lead out port is opened in the lower wall and is located at a rear side of the container. ### Claim 7 (depends on 5) The liquid container according to claim 5, wherein the cover covers the accommodation space. ### Claim 8 (depends on 4) The liquid container according to claim 4, wherein the cover is fixed to the frame. ### Claim 9 (depends on 4) The liquid container according to claim 4, wherein the valve section includes a float that moves depending on the remaining amount of liquid contained in the container, and opens and closes by movement of the float. ### Claim 10 (depends on 4) The liquid container according to claim 4, wherein the cover includes a grip section to be gripped by a user. ### Claim 11 (depends on 1) The liquid container according to claim 1, wherein the liquid ejection apparatus includes a connection body to be connected to the lead out section, the connection body has a connection section for detecting connection with the liquid container, the lead out section includes a circuit board that connects with the connection section, and the circuit board has a connection terminal that contacts the connection section. ### Claim 12 (depends on 1) The liquid container according to claim 1, wherein the liquid ejection apparatus includes an ejection section that ejects liquid and the liquid container further comprises: a lead out section configured to connect to the liquid ejection apparatus; a valve section located between the lead out port and the lead out section and configured to open and close; and a sub-filter section located between the valve section and the lead out section, wherein the lead out section leads out, to the liquid ejection apparatus, liquid that was led out from the lead out port and collection ability of the sub-filter section is higher than collection ability of the filter section. ### Claim 13 A liquid container to be connected to a liquid ejection apparatus configured to eject liquid, the liquid container comprising: a container configured to contain liquid; and a filter section configured to collect foreign matter, wherein an injection port for injecting liquid into the container and a lead out port for leading liquid out from the container are opened in the container, the filter section is located in the injection port, the liquid ejection apparatus includes an ejection section that ejects liquid and the liquid container further comprises: a lead out section configured to connect to the liquid ejection apparatus; a valve section located between the lead out port and the lead out section and configured to open and close; and a sub-filter section located between the valve section and the lead out section, the lead out section leads out, to the liquid ejection apparatus, liquid that was led out from the lead out port, and collection ability of the sub-filter section is higher than collection ability of the filter section. ### Claim 14 A liquid container to be connected to a liquid ejection apparatus configured to eject liquid, the liquid container comprising: a container configured to contain liquid; and a filter section configured to collect foreign matter, wherein an injection port for injecting liquid into the container and a lead out port for leading liquid out from the container are opened in the container, the liquid container further comprises: a lead out section configured to be connected to the liquid ejection apparatus; a valve section located between the lead out port and the lead out section and configured to open and close; and the filter section is located in the injection port, and the valve section includes a float that moves depending on the remaining amount of liquid contained in the container, and opens and closes by movement of the float.