# US 11,999,169 B2 · Liquid container and recording apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,999,169 B2 - Document ID: US11999169B2 - Status: Granted - Kind: B2 - Application number: 17/572,897 - Filed: 2022-01-11 - Published: 2022-05-05 - Granted: 2024-06-04 - Earliest claimed: 2018-09-28 - Assignees: Brother Kogyo Kabushiki Kaisha - Applicants: Brother Kogyo Kabushiki Kaisha - Inventors: Masako Kawagoe - Web page: https://patentgrep.com/patent/US11999169B2 ## CPC - B41J 2/17506: {Refilling of the cartridge} - B41J 2/17509: {Whilst mounted in the printer} - B41J 2/17513: {Inner structure} - B41J 2/1752: {Mounting within the printer} - B41J 2/17553: {Outer structure} - B41J 29/02: Framework - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A liquid container includes a liquid chamber defined by an upper wall, a lower wall, and a peripheral wall, a refill port, a liquid outlet port through which ink is supplied from the liquid chamber to the outside, and a first longitudinal partition extending upward from the lower wall and configured to partition the liquid chamber into a first liquid containing portion and a second liquid containing portion in a horizontal direction. A first lateral communication passage is positioned between an end portion of the first longitudinal partition in the horizontal direction and the peripheral wall. The liquid outlet port is disposed in one of the first liquid containing portion and the second liquid containing portion. ## Claims ### Claim 1 A liquid container comprising: a liquid chamber configured to contain liquid and including an upper liquid containing portion and a lower liquid containing portion positioned lower than the upper liquid containing portion, a communication hole being formed to communicate between the upper liquid containing portion and the lower liquid containing portion; a wall portion positioned in the lower liquid containing portion and extending upward; a lateral partition configured to partition the liquid chamber into the upper liquid containing portion and the lower liquid containing portion; a liquid outlet port positioned opposite to the communication hole with respect to the wall portion in the lower liquid containing portion; and a liquid inlet port positioned in an upper portion of the liquid chamber, the liquid inlet port facing directly upward, wherein when viewed from above, a virtual line connecting the communication hole and the liquid outlet port intersects with the wall portion, and wherein the ink entering through the liquid inlet port first falls onto the lateral partition, flows horizontally on the lateral partition in the upper liquid containing portion to the communication hole, then passes through the communication hole to the lower liquid containing portion. ### Claim 2 (depends on 1) The liquid container according to claim 1, wherein the liquid chamber is defined by at least an upper wall, a lower wall, a first side wall and a second side wall, and wherein the wall portion extends vertically upward from the lower wall. ### Claim 3 (depends on 2) The liquid container according to claim 2, wherein the liquid chamber is defined by at least an upper wall, a lower wall, a first side wall and a second side wall, and wherein the wall portion extends from the second side wall. ### Claim 4 (depends on 3) The liquid container according to claim 3, wherein the wall portion does not extend to the first side wall. ### Claim 5 (depends on 3) The liquid container according to claim 3, wherein the wall portion extends from the second side wall perpendicularly to the second side wall. ### Claim 6 (depends on 1) The liquid container according to claim 1, wherein the liquid chamber is defined by at least an upper wall, a lower wall, a first side wall and a second side wall, and wherein the wall portion extends from the second side wall. ### Claim 7 (depends on 6) The liquid container according to claim 6, wherein the wall portion does not extend to the first side wall. ### Claim 8 (depends on 6) The liquid container according to claim 6, wherein the wall portion extends from the second side wall perpendicularly to the second side wall. ### Claim 9 (depends on 1) The liquid container according to claim 1, wherein the liquid chamber is defined by at least an upper wall, a lower wall, a first side wall and a second side wall, and wherein the communication hole is positioned closer to the second side wall. ### Claim 10 (depends on 1) The liquid container according to claim 1, wherein the liquid chamber is defined by at least an upper wall, a lower wall, a first side wall and a second side wall, and wherein the liquid outlet port is positioned closer to the second side wall. ### Claim 11 (depends on 1) The liquid container according to claim 1, wherein after liquid flows from the upper liquid containing portion through the communication hole to the lower liquid containing portion, the liquid flows while colliding with the wall portion and is supplied to the outside through the liquid outlet port. ### Claim 12 (depends on 1) The liquid container according to claim 1, further comprising: a buffer chamber disposed below the liquid chamber; and an air supply port which communicates with the buffer chamber and through which air is supplied from the buffer chamber to the liquid chamber. ### Claim 13 A liquid container comprising: a liquid chamber configured to contain liquid and including an upper liquid containing portion and a lower liquid containing portion positioned lower than the upper liquid containing portion, a communication hole being formed to communicate between the upper liquid containing portion and the lower liquid containing portion; a wall portion positioned in the lower liquid containing portion and extending upward; a lateral partition configured to partition the liquid chamber into the upper liquid containing portion and the lower liquid containing portion; a liquid outlet port positioned opposite to the communication hole with respect to the wall portion in the lower liquid containing portion; and a liquid inlet port positioned in an upper portion of the liquid chamber, the liquid inlet port facing directly upward, wherein when viewed from above, a surface of the wall portion faces the communication hole, and wherein the ink entering through the liquid inlet port first falls onto the lateral partition, flows horizontally on the lateral partition in the upper liquid containing portion to the communication hole, then passes through the communication hole to the lower liquid containing portion.