# US 9,519,240 B1 · Developing device, assembly, and image forming apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,519,240 B1 - Document ID: US9519240B1 - Status: Granted - Kind: B1 - Application number: 15/011,054 - Filed: 2016-01-29 - Granted: 2016-12-13 - Earliest claimed: 2015-07-24 - Assignees: Fuji Xerox Co., Ltd. - Applicants: Fuji Xerox Co., Ltd. - Inventors: Hideaki Ozawa - Web page: https://patentgrep.com/patent/US9519240B1 ## CPC - G03G 15/0898: {for preventing toner scattering during operation, e.g. seals (sealing the donor member G03G15/0817; sealing the magnetic brush G03G15/0942)} - G03G 15/0817: {characterised by the lateral sealing at both sides of the donor member with respect to the developer carrying direction} - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract Provided is a developing device including a rotating member that faces a formation target member on which a toner image is formed, is rotated around a rotation shaft extruded from an end portion, and includes a holding portion having an outer circumference on which a toner is held, an accommodation member that accommodates the toner, includes a wall at which a notch is formed, and in which the rotating member is disposed in a state where the rotation shaft is extruded outwardly from an inner surface of the wall through the notch, and a fixation member that is fixed on both sides of an inner surface of the wall with interposing the notch. ## Claims ### Claim 1 A developing device comprising: a rotating member that faces a formation target member on which a toner image is formed, is rotated around a rotation shaft extruded from an end portion, and includes a holding portion having an outer circumference on which a toner is held; an accommodation member that accommodates the toner, includes a wall at which a notch is formed, and in which the rotating member is disposed in a state where the rotation shaft is extruded outwardly from an inner surface of the wall through the notch; and a fixation member that is fixed on both sides of an inner surface of the wall with interposing the notch. ### Claim 2 (depends on 1) The developing device according to claim 1, wherein the fixation member is disposed between the holding portion and the wall which face each other. ### Claim 3 (depends on 2) The developing device according to claim 2, wherein a pair of projections is formed in the fixation member, a pair of holes is formed on both of the sides of the wall with interposing the notch, and the pair of projections of the fixation member is fit into the pair of holes of the wall so that the fixation member is fixed to both of the sides of the inner surface of the wall with interposing the notch. ### Claim 4 (depends on 3) The developing device according to claim 3, further comprising: a covering member that covers an end portion of the holding portion in an axial direction and the fixation member from a formation target member side so as to suppress leakage of the toner from the accommodation member, and adheres to the fixation member. ### Claim 5 (depends on 2) The developing device according to claim 2, wherein a pair of holes is formed in the fixation member, a pair of projections is formed on both of the sides of the wall with interposing the notch, and the pair of projections of the wall is fit into the pair of holes of the fixation member so that the fixation member is fixed to both of the sides of the inner surface of the wall with interposing the notch. ### Claim 6 (depends on 5) The developing device according to claim 5, further comprising: a covering member that covers an end portion of the holding portion in an axial direction and the fixation member from a formation target member side so as to suppress leakage of the toner from the accommodation member, and adheres to the fixation member. ### Claim 7 (depends on 2) The developing device according to claim 2, further comprising: a covering member that covers an end portion of the holding portion in an axial direction and the fixation member from a formation target member side so as to suppress leakage of the toner from the accommodation member, and adheres to the fixation member. ### Claim 8 (depends on 1) The developing device according to claim 1, wherein a pair of projections is formed in the fixation member, a pair of holes is formed on both of the sides of the wall with interposing the notch, and the pair of projections of the fixation member is fit into the pair of holes of the wall so that the fixation member is fixed to both of the sides of the inner surface of the wall with interposing the notch. ### Claim 9 (depends on 8) The developing device according to claim 8, further comprising: a covering member that covers an end portion of the holding portion in an axial direction and the fixation member from a formation target member side so as to suppress leakage of the toner from the accommodation member, and adheres to the fixation member. ### Claim 10 (depends on 1) The developing device according to claim 1, wherein a pair of holes is formed in the fixation member, a pair of projections is formed on both of the sides of the wall with interposing the notch, and the pair of projections of the wall is fit into the pair of holes of the fixation member so that the fixation member is fixed to both of the sides of the inner surface of the wall with interposing the notch. ### Claim 11 (depends on 10) The developing device according to claim 10, further comprising: a covering member that covers an end portion of the holding portion in an axial direction and the fixation member from a formation target member side so as to suppress leakage of the toner from the accommodation member, and adheres to the fixation member. ### Claim 12 (depends on 1) The developing device according to claim 1, further comprising: a covering member that covers an end portion of the holding portion in an axial direction and the fixation member from a formation target member side so as to suppress leakage of the toner from the accommodation member, and adheres to the fixation member. ### Claim 13 (depends on 1) An assembly comprising: the developing device according to claim 1; and a formation target member that is disposed to face the rotating member and on which a toner image is formed with a toner held on the rotating member, and is attachable to a main body of an image forming apparatus, wherein the developing device and the formation target member are integral. ### Claim 14 (depends on 1) An image forming apparatus comprising: the developing device according to claim 1; a formation target member that is disposed to face the rotating member and on which a toner image is formed with a toner held on the rotating member; and a transfer device that transfers a toner image formed on the formation target member onto a medium.