# US 8,770,730 B2 · Liquid container and apparatus in which liquid container is mountable > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,730 B2 - Document ID: US8770730B2 - Status: Granted - Kind: B2 - Application number: 13/767,353 - Filed: 2013-02-14 - Published: 2013-08-29 - Granted: 2014-07-08 - Earliest claimed: 2012-02-23 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Tatsuo Nanjo; Yasuo Kotaki; Hitoshi Takada; Koichi Kubo; Hideki Ogura; Hironori Murakami; Takeho Miyashita; Hideo Fukazawa; Eiichi Adachi - Web page: https://patentgrep.com/patent/US8770730B2 ## CPC - B41J 2/17556: {Means for regulating the pressure in the cartridge} - B41J 2/17509: {Whilst mounted in the printer} - B41J 2002/17516: {comprising a collapsible ink holder, e.g. a flexible bag} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A liquid container enables a liquid contained in a liquid containing chamber to be supplied to an exterior through a supply port. The liquid container includes a first channel, a second channel, and a communication path. The first channel is in communication with a first opening which opens into the liquid containing chamber. The second channel is in communication with a second opening which opens into the liquid containing chamber, the second opening being positioned above the first opening in a direction of gravitational force. The communication path allows the first channel and the second channel to communicate with each other outside the liquid containing chamber to permit a flow of the liquid. ## Claims ### Claim 1 A liquid container enabling a liquid contained in a liquid containing chamber to be supplied to an exterior through a supply hole, the liquid container comprising: a first channel in communication with a first opening which opens into the liquid containing chamber; a second channel in communication with a second opening which opens into the liquid containing chamber, the second opening being positioned above the first opening in a direction of gravitational force; a communication path allowing the first channel and the second channel to communicate with each other outside the liquid containing chamber to permit a flow of the liquid; wherein the liquid containing chamber is formed at least partly of a flexible bag, and an opening of the supply hole opening into the liquid containing chamber is positioned between the first opening and the second opening in the direction of gravitational force. ### Claim 2 (depends on 1) The liquid container according to claim 1, further comprising a volume varying section capable of varying a volume of an internal space which is in communication with the communication path. ### Claim 3 (depends on 1) The liquid container according to claim 1, further comprising a valve regulating the flow of the liquid in the communication path to a direction from the first channel toward the second channel. ### Claim 4 (depends on 3) The liquid container according to claim 3, further comprising a displacement section configured to be displaced according to a pressure in the communication path between the valve and the second opening. ### Claim 5 (depends on 1) The liquid container according to claim 1, wherein the liquid containing chamber is formed at least partly of a flexible bag, an opening of the supply hole opening into the liquid containing chamber is positioned between the first opening and the second opening, and the liquid container further comprises: a volume varying section capable of varying a volume of an internal space which is in communication with the communication path; a displacement section configured to be displaced depending on a pressure in the communication path between the valve and the second opening; and a pressurization chamber capable of introducing a pressure acting to press the flexible bag so as to pressurize the liquid in the liquid containing chamber. ### Claim 6 (depends on 1) The liquid container according to claim 1, wherein the supply hole is positioned on a side of the liquid containing chamber extending along the direction of gravitational force in an installed orientation of the liquid container. ### Claim 7 (depends on 1) The liquid container according to claim 1, wherein the supply hole is positioned at a bottom of the liquid containing chamber in the direction of gravitational force in an installed orientation of the liquid container in a printing apparatus. ### Claim 8 (depends on 1) The liquid container according to claim 1, wherein the second opening is positioned above the first opening in the direction of gravitational force in an installed orientation of the liquid container in a printing apparatus. ### Claim 9 (depends on 1) The liquid container according to claim 1, wherein the second opening is an opening through which ink drawn into the first channel through the first opening is squirted into the liquid containing chamber. ### Claim 10 (depends on 1) The liquid container according to claim 1, wherein the liquid is ink containing pigment. ### Claim 11 (depends on 1) An apparatus in which the liquid container according to claim 1 is mountable, the apparatus comprising: a connection section configured to be connectable to the supply hole so as to allow introduction of the liquid in the liquid containing chamber; and a section configured to generate a flow of the liquid in the communication path. ### Claim 12 (depends on 1) The liquid container according to claim 1, wherein the second opening is positioned above the first opening in the direction of gravitational force in an installed orientation of the liquid container in a printing apparatus main body. ### Claim 13 (depends on 1) The liquid container according to claim 1, wherein the opening of the supply hole is positioned between the first opening and the second opening in the direction of gravitational force in an installed orientation of the liquid container in a printing apparatus main body. ### Claim 14 (depends on 13) The liquid container according to claim 13, wherein the second opening is positioned above the first opening in the direction of gravitational force in the installed orientation of the liquid container in the printing apparatus main body. ### Claim 15 An apparatus in which a liquid container comprising a liquid containing chamber with a liquid contained therein is mountable, the liquid containing chamber being formed at least partly of a flexible bag, wherein the liquid container comprises: a first channel in communication with a first opening which opens into the liquid containing chamber; a second channel in communication with a second opening which opens into the liquid containing chamber, the second opening being positioned above the first opening in a direction of gravitational force; a supply hole communicating with an opening which opens into the liquid containing chamber to enable the liquid contained in the liquid containing chamber to be supplied to an exterior, the opening being positioned between the first opening and the second opening in the direction of gravitational force; a communication path allowing the first channel and the second channel to communicate with each other outside the liquid containing chamber to permit a flow of the liquid; a volume varying section capable of varying a volume of an internal space which is in communication with the communication path; a valve regulating the flow of the liquid in the communication path to a direction from the first channel toward the second channel; and a displacement section configured to be displaced depending on a pressure in the communication path between the valve and the second opening; and the apparatus comprises: a connection section configured to be connectable to the supply hole so as to allow introduction of the liquid in the liquid containing chamber; and a section configured to generate a flow of the liquid in the communication path. ### Claim 16 (depends on 15) The apparatus according to claim 15, further comprising a detection section configured to detect displacement of the displacement section. ### Claim 17 (depends on 16) The apparatus according to claim 16, wherein the opening of the supply hole is positioned between the first opening and the second opening in the direction of gravitational force in an installed orientation of the liquid container in a printing apparatus main body. ### Claim 18 (depends on 15) The apparatus according to claim 15, wherein the second opening is positioned above the first opening in the direction of gravitational force in an installed orientation of the liquid container in a printing apparatus main body. ### Claim 19 (depends on 15) The apparatus according to claim 15, wherein the opening of the supply hole is positioned between the first opening and the second opening in the direction of gravitational force in an installed orientation of the liquid container in a printing apparatus main body.