# US 2021/0240106 A1 · 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 2021/0240106 A1 - Document ID: US20210240106A1 - Status: Published application - Kind: A1 - Application number: 17/166,776 - Filed: 2021-02-03 - Published: 2021-08-05 - Earliest claimed: 2020-02-04 - Assignees: Brother Kogyo Kabushiki Kaisha - Applicants: Brother Kogyo Kabushiki Kaisha - Inventors: Shintaro FUKUOKA; Shougo SATO - Web page: https://patentgrep.com/patent/US20210240106A1 ## CPC - G03G 15/0886: {by mechanical means, e.g. shutter, plug} - G03G 15/0865: {Arrangements for supplying new developer} - G03G 15/0867: {cylindrical developer cartridges, e.g. toner bottles for the developer replenishing opening} - G03G 21/1619: {Frame structures} - G03G 21/1633: {using doors or covers (G03G21/1638 takes precedence)} - G03G 21/1817: {having a submodular arrangement} - G03G 2215/0636: Specific type of dry developer device - G03G 2221/1678: Frame structures - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract An image forming apparatus includes a first process unit, a second process unit, a first toner cartridge, and a second toner cartridge. The first toner cartridge includes a cartridge housing and a first shutter movable between a first closed position and a first open position. The cartridge housing includes one end portion and the other end portion. The cartridge housing is rotatable between a first position at which the first shutter is positioned at the first closed position and a second position at which the first shutter is positioned at the first open position. When the cartridge housing moves from the second position to the first position, the one end portion of the cartridge housing comes close to the second toner cartridge and the other end portion of the cartridge housing goes away from the second toner cartridge. ## Claims ### Claim 1 An image forming apparatus, comprising: a first process unit having a first photoconductive drum rotatable about a first axis extending in a first direction; a second process unit having a second photoconductive drum rotatable about a second axis extending in the first direction, the second process unit being aligned with the first process unit in a second direction intersecting the first direction; a first toner cartridge mountable on the first process unit, the first toner cartridge including: a cartridge housing accommodating toner and having a first opening, the cartridge housing including one end portion and the other end portion spaced apart from the one end portion in a third direction intersecting the first direction and the second direction in a state in which the first toner cartridge is mounted on the first process unit; and a first shutter movable with respect to the cartridge housing between a first closed position at which the first opening is closed and a first open position at which the first opening is opened, the cartridge housing being rotatable between a first position at which the first shutter is positioned at the first closed position and a second position at which the first shutter is positioned at the first open position in a state in which the first toner cartridge is mounted on the first process unit; and a second toner cartridge mountable on the second process unit, wherein, when the cartridge housing moves from the second position to the first position, the one end portion of the cartridge housing comes close to the second toner cartridge and the other end portion of the cartridge housing goes away from the second toner cartridge. ### Claim 2 (depends on 1) The image forming apparatus according to claim 1, wherein the first process unit includes (i) a first frame aligned with the cartridge housing in the first direction in the state in which the first toner cartridge is mounted on the first process unit, and (ii) a second frame movable with respect to the first frame and configured to move the cartridge housing between the first position and the second position in the state in which the first toner cartridge is mounted on the first process unit, and wherein, when the cartridge housing is positioned at the first position, the one end portion of the cartridge housing protrudes in the second direction from the first frame, and the other end portion of the cartridge housing protrudes in an opposite direction of the direction in which the one end portion protrudes with respect to the first frame. ### Claim 3 (depends on 1) The image forming apparatus according to claim 1, wherein, in the state in which the cartridge housing is positioned at the first position, the one end portion of the cartridge housing is positioned on one side in the second direction of a position of the one end portion of the cartridge housing when the cartridge housing is positioned at the second position, and the other end portion of the cartridge housing is positioned on the other side in the second direction of a position of the other end portion of the cartridge housing when the cartridge housing is positioned at the second position. ### Claim 4 (depends on 1) The image forming apparatus according to claim 1, further comprising: a body housing including a body opening; and a top cover having a first end connected to the body housing and a second end, the top cover being movable between an open position at which the body opening is opened and a closed position at which the body opening is closed, wherein the one end portion of the cartridge housing is positioned on an opposite side of the first photoconductive drum with respect to the other end portion of the cartridge housing in the state in which the first toner cartridge is mounted on the first process unit, and wherein the one end portion of the cartridge housing moves such that the one end portion of the cartridge goes away from the first end of the cover in the second direction when the cartridge housing moves from the second position to the first position. ### Claim 5 (depends on 4) The image forming apparatus according to claim 4, further comprising an exposing head configured to expose the first photoconductive drum, the exposing head being positioned, when the top cover is positioned at the closed position, in a space between the cartridge housing positioned at the second position and the second toner cartridge, wherein, when the cartridge housing is positioned at the first position, at least a part of the one end portion of the cartridge housing is positioned in the space in a state in which the exposing head is moved from the space after the top cover moves from the closed position to the open position. ### Claim 6 (depends on 1) The image forming apparatus according to claim 1, further comprising: a body housing; and a drawer movable between an inner position which is positioned in the body housing and an outer position which is positioned outside the body housing in the second direction and to which the first process unit and the second process unit are mountable, wherein the one end portion of the cartridge housing moves in a direction in which the drawer moves from the inner position to the outer position when the cartridge housing moves from the second position to the first position. ### Claim 7 (depends on 1) The image forming apparatus according to claim 1, wherein the first process unit includes (i) a first frame aligned with the cartridge housing in the first direction in the state in which the first toner cartridge is mounted on the first process unit, and (ii) a second frame movable with respect to the first frame and configured to move the first toner cartridge between the first position and the second position in the state in which the first toner cartridge is mounted on the first process unit, and wherein the first frame includes a stopper configured to stop the cartridge housing at the second position when the cartridge housing moves from the first position to the second position. ### Claim 8 (depends on 1) The image forming apparatus according to claim 1, wherein a rotation center of the cartridge housing is positioned at a center in a dimension of the cartridge housing in the third direction in the state in which the first toner cartridge is mounted on the first process unit. ### Claim 9 (depends on 1) The image forming apparatus according to claim 1, wherein a dimension of the cartridge housing in the third direction is greater than a dimension of the cartridge housing in the second direction in the state in which the first toner cartridge is mounted on the first process unit. ### Claim 10 (depends on 1) The image forming apparatus according to claim 1, wherein the cartridge housing includes a second opening, and wherein the first toner cartridge includes a second shutter movable with respect to the cartridge housing between a second closed position at which the second opening is closed and a second open position at which the second opening is opened. ### Claim 11 (depends on 10) The image forming apparatus according to claim 10, wherein the cartridge housing includes a toner container communicating with the first opening and a waste toner container communicating with the second opening. ### Claim 12 (depends on 11) The image forming apparatus according to claim 11, wherein the toner container and the waste toner container are aligned in the second direction. ### Claim 13 An image forming apparatus, comprising: a first frame; a first photoconductive drum rotatable about a first axis extending in a first direction and supported by the first frame; a second frame; a second photoconductive drum rotatable about a second axis extending in the first direction and supported by the second frame, the second frame being aligned with the first frame in a second direction intersecting the first direction; a first toner cartridge mountable on the first frame, the first toner cartridge including: a cartridge housing accommodating toner and having a first opening, the cartridge housing including one end portion and the other end portion spaced apart from the one end portion in a third direction intersecting the first direction and the second direction in a state in which the first toner cartridge is mounted on the first frame; and a first shutter movable with respect to the cartridge housing between a first closed position at which the first opening is closed and a first open position at which the first opening is opened, the cartridge housing being rotatable between a first position at which the first shutter is positioned at the first closed position and a second position at which the first shutter is positioned at the first open position in a state in which the first toner cartridge is mounted on the first frame; and a second toner cartridge mountable on the second frame, wherein, when the cartridge housing moves from the second position to the first position, the one end portion of the cartridge housing comes close to the second toner cartridge and the other end portion of the cartridge housing goes away from the second toner cartridge. ### Claim 14 (depends on 13) The image forming apparatus according to claim 13, wherein the first frame is aligned with the cartridge housing in the first direction in the state in which the first toner cartridge is mounted on the first frame, wherein the second frame is movable with respect to the first frame and configured to move the cartridge housing between the first position and the second position in the state in which the first toner cartridge is mounted on the first frame, and wherein, when the cartridge housing is positioned at the first position, the one end portion of the cartridge housing protrudes in the second direction from the first frame, and the other end portion of the cartridge housing protrudes in an opposite direction of the direction in which the one end portion protrudes with respect to the first frame. ### Claim 15 (depends on 13) The image forming apparatus according to claim 13, wherein, in the state in which the cartridge housing is positioned at the first position, the one end portion of the cartridge housing is positioned on one side in the second direction of a position of the one end portion of the cartridge housing when the cartridge housing is positioned at the second position, and the other end portion of the cartridge housing is positioned on the other side in the second direction of a position of the other end portion of the cartridge housing when the cartridge housing is positioned at the second position. ### Claim 16 (depends on 13) The image forming apparatus according to claim 13, further comprising: a body housing including a body opening; and a top cover having a first end connected to the body housing and a second end, the top cover being movable between an open position at which the body opening is opened and a closed position at which the body opening is closed, wherein the one end portion of the cartridge housing is positioned on an opposite side of the first photoconductive drum with respect to the other end portion of the cartridge housing in the state in which the first toner cartridge is mounted on the first frame, and wherein the one end portion of the cartridge housing moves such that the one end portion of the cartridge goes away from the first end of the cover in the second direction when the cartridge housing moves from the second position to the first position. ### Claim 17 (depends on 16) The image forming apparatus according to claim 16, further comprising an exposing head configured to expose the first photoconductive drum, the exposing head being positioned, when the top cover is positioned at the closed position, in a space between the cartridge housing positioned at the second position and the second toner cartridge, wherein, when the cartridge housing is positioned at the first position, at least a part of the one end portion of the cartridge housing is positioned in the space in a state in which the exposing head is moved from the space after the top cover moves from the closed position to the open position. ### Claim 18 (depends on 13) The image forming apparatus according to claim 13, further comprising: body housing; and a drawer movable between an inner position which is positioned in the body housing and an outer position which is positioned outside the body housing in the second direction and to which the first frame and the second frame are mountable, wherein the one end portion of the cartridge housing moves in a direction in which the drawer moves from the inner position to the outer position when the cartridge housing moves from the second position to the first position. ### Claim 19 (depends on 13) The image forming apparatus according to claim 13, wherein the first frame is aligned with the cartridge housing in the first direction in the state in which the first toner cartridge is mounted on the first frame, and the second frame is movable with respect to the first frame and configured to move the first toner cartridge between the first position and the second position in the state in which the first toner cartridge is mounted on the first frame, and wherein the first frame includes a stopper configured to stop the cartridge housing at the second position when the cartridge housing moves from the first position to the second position. ### Claim 20 (depends on 13) The image forming apparatus according to claim 13, wherein a rotation center of the cartridge housing is positioned at a center in a dimension of the cartridge housing in the third direction in the state in which the first toner cartridge is mounted on the first frame.