# US 11,305,549 B2 · Container > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,549 B2 - Document ID: US11305549B2 - Status: Granted - Kind: B2 - Application number: 16/943,224 - Filed: 2020-07-30 - Published: 2021-02-04 - Granted: 2022-04-19 - Earliest claimed: 2019-07-31 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Taku Ishizawa; Tadahiro Mizutani; Takuma Ozawa - Web page: https://patentgrep.com/patent/US11305549B2 ## CPC - B41J 2/17536: {Protection of cartridges or parts thereof, e.g. tape} - B41J 2/17509: {Whilst mounted in the printer} - B41J 2/17513: {Inner structure} - B41J 2/1752: {Mounting within the printer} - B41J 2/17523: {Ink connection} - B41J 2/1754: {with means attached to the cartridge, e.g. protective cap} - B41J 2/17553: {Outer structure} - B41J 2/17566: {Ink level or ink residue control} - B41J 2002/17516: {comprising a collapsible ink holder, e.g. a flexible bag} - B41J 2002/17573: {using optical means for ink level indication} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A container stores a fluid for use in an ink jet printer. The container includes: a casing that defines a storage space for storing the fluid, and has an opening communicating with the storage space; a film that covers the opening and seals the storage space; and a film attachment section that fixes the film to the casing. The casing includes a first surface that surrounds a periphery of the opening, and faces the film, and a second surface that surrounds the opening at a position farther from the opening than the first surface, has an angle intersecting the first surface, and faces the film, and the film attachment section is provided on the second surface. ## Claims ### Claim 1 A container that stores a fluid for use in an ink jet printer, the container comprising: a casing that defines a storage space for storing the fluid, and has an opening communicating with the storage space, the casing having a first end portion and a second end portion that is opposed to the first end portion and is separated from the first end portion by the storage space, the opening being located at the second end portion; a liquid conduit located at the first end portion and configured to pass the fluid from the storage space outside of the container; a film arranged at the second end portion and configured to cover the opening and seal the storage space at the second end portion; and a film attachment section arranged at the second end portion and configured to fix the film to the casing, wherein the casing includes a peripheral wall extending in an axial direction along a central axis of the container, the peripheral wall having an inner side facing the storage space, an outer side facing an exterior of the storage space and an end face in the axial direction, the end face of the peripheral wall has a first surface that surrounds a periphery of the opening, and faces the film, the outer side of the peripheral wall has a second surface that surrounds the opening at a position farther from the opening than the first surface, that has a portion at an angle intersecting the first surface, and that faces the film, and the film is welded to the second surface and not welded to the first surface. ### Claim 2 (depends on 1) The container according to claim 1, wherein the second surface is provided at a notched portion of a corner between the outer side and the end face of the peripheral wall. ### Claim 3 (depends on 1) The container according to claim 1, wherein the second surface is provided on a portion of the outer side of the peripheral wall in opposition to the storage space. ### Claim 4 (depends on 1) The container according to claim 1, wherein the second surface is provided on a projection of the outer side of the peripheral wall. ### Claim 5 (depends on 1) The container according to claim 1, wherein the second surface is provided in a recess of the outer side of the peripheral wall. ### Claim 6 (depends on 1) The container according to claim 1, wherein the second surface is provided in a recess formed on the end face of the peripheral wall. ### Claim 7 (depends on 1) The container according to claim 1, wherein the storage space stores, as the fluid, ink for use in the ink jet printer. ### Claim 8 (depends on 1) The container according to claim 1, wherein the storage space stores, as the fluid, pressurized air that is pressurized by a pump included in the ink jet printer. ### Claim 9 A container that stores a fluid for use in an ink jet printer, the container comprising: a casing that defines a storage space for storing the fluid, and has an opening communicating with the storage space; and a film that covers the opening and seals the storage space, wherein the casing includes a peripheral wall, the peripheral wall having an inner side facing the storage space, an outer side facing an exterior of the storage space and an end face, the end face of the peripheral wall has a first surface that surrounds a periphery of the opening, and faces the film, the outer side of the peripheral wall has a second surface that surrounds the opening at a position farther from the opening than the first surface, that has a portion at an angle intersecting the first surface, and that faces the film, and the film is welded to the second surface and not welded to the first surface. ### Claim 10 (depends on 9) The container according to claim 9, wherein the second surface is provided on a projection of the outer side of the peripheral wall. ### Claim 11 (depends on 9) The container according to claim 9, wherein the second surface is provided in a recess of the outer side of the peripheral wall. ### Claim 12 (depends on 9) The container according to claim 9, wherein the second surface is provided at a notched portion of a corner between the outer side and the end face of the peripheral wall. ### Claim 13 (depends on 9) The container according to claim 9, wherein the second surface is provided on a portion of the outer side of the peripheral wall in opposition to the storage space. ### Claim 14 (depends on 9) The container according to claim 9, wherein the second surface is provided in a recess formed on the end face of the peripheral wall. ### Claim 15 (depends on 9) The container according to claim 9, wherein the storage space stores, as the fluid, ink for use in the ink jet printer. ### Claim 16 (depends on 9) The container according to claim 9, wherein the storage space stores, as the fluid, pressurized air that is pressurized by a pump included in the ink jet printer.