# US 2021/0080901 A1 · Photosensitive member cartridge and process cartridge > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0080901 A1 - Document ID: US20210080901A1 - Status: Published application - Kind: A1 - Application number: 17/102,536 - Filed: 2020-11-24 - Published: 2021-03-18 - Earliest claimed: 2015-05-29 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Jun Miyamoto; Masao Uyama; Kenji Matsuda; Ken Kikuchi; Jun Miyazaki - Web page: https://patentgrep.com/patent/US20210080901A1 ## CPC - G03G 21/1814: {Details of parts of process cartridge, e.g. for charging, transfer, cleaning, developing (G03G21/1835 takes precedence)} - G03G 15/0863: {provided with identifying means or means for storing process- or use parameters, e.g. an electronic memory} - G03G 21/1652: {Electrical connection means} - G03G 21/1821: {means for connecting the different parts of the process cartridge, e.g. attachment, positioning of parts with each other, pressure/distance regulation (G03G21/1825 takes precedence)} - G03G 21/1885: {position of the memory; memory housings; electrodes} - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A photosensitive member cartridge detachably mountable to a main assembly of an image forming apparatus for forming an image, includes a frame; a photosensitive drum on which and which is provided in the frame; a transfer member for transferring an image formed on the drum onto the sheet; a mounting portion for detachably mounting a developing cartridge including a developer carrying member onto the drum and a memory for storing information; a first electrical contact provided on the frame and electrically connectable with a main assembly electrical contact provided in the main assembly when the cartridge is mounted to the main assembly; and a second electrical contact provided on the frame for electrically connecting the memory and the first electrical contact portion with each other when the developing cartridge is mounted to the mounting portion. ## Claims ### Claim at position 1 1-4. (canceled) ### Claim 5 A cartridge detachably mountable to a main assembly of an image forming apparatus, the cartridge comprising: a first unit including a rotation member configured to carry toner and rotate about a rotational axis; and a second unit detachably mountable to the first unit, the second unit including an accommodating portion accommodating the toner and a memory storing information, the memory including a contact, wherein in a state in which the cartridge is mounted to the main assembly (i) the memory is provided on a bottom surface of the second unit mounted to the first unit and (ii) a surface having the contact is inclined downward toward the rotation member as seen in a direction of the rotational axis of the rotation member, and wherein, when the first unit is oriented in a mounting posture in which the cartridge is mounted to the main assembly, the second unit is capable of taking first and second postures with respect to the first unit, the second posture being a posture in which the memory is in a position above a position in which the memory is in when the second unit takes the first posture, and wherein the second unit is configured to be transitioned from the second posture toward the first posture by a rotation of the second unit with respect to the first unit about a rotational axis extending along the direction of the rotational axis of the rotation member. ### Claim 6 (depends on 5) The cartridge according to claim 5, wherein the second unit includes a stirring member configured to be rotatable and stir the toner accommodated in the accommodating portion, and wherein as seen in the direction of the rotational axis of the rotation member, the memory is provided in one region of two regions divided by a virtual line passing through a rotational axis of the stirring member and extending in a direction of gravity, with the rotation member being provided in the other region of the two regions. ### Claim 7 (depends on 5) The cartridge according to claim 5, wherein the second unit includes a stirring member configured to stir the toner in the accommodating portion, and wherein the memory is provided below a rotational axis of the stirring member. ### Claim 8 (depends on 8) The cartridge according to claim 8, wherein the stirring member is configured to be rotate and stir the toner in the accommodating portion, and the stirring member includes a shaft and a sheet member fixed to the shaft, the sheet member being in contact with an inner surface of the accommodating portion when the stirring member is rotating, and wherein the memory is provided on an outer surface of the accommodating portion opposing a region of the inner surface of the accommodating portion with which the sheet member is in contact when the stirring member is rotating. ### Claim 9 (depends on 5) The cartridge according to claim 5, wherein the image forming apparatus includes a sheet accommodating portion accommodating a sheet, and a feeding path for feeding the sheet accommodated by the sheet accommodating portion, the feeding path being provided on an upstream side of a position where the rotation member of the cartridge mounted to the main assembly is provided with respect to a feeding direction of the sheet, and wherein the memory of the second unit mounted to the first unit is provided above the feeding path with respect to the direction of gravity in a state in which the cartridge is mounted to the main assembly. ### Claim 10 (depends on 5) The cartridge according to claim 5, wherein the first unit includes supporting portions provided at both end portions of the first unit with respect to the rotational axis of the rotation member, and the second unit includes supported portions, and wherein the supported portions of the second unit are supported by the supporting portions of the first unit when the second unit is transitioned from the second posture toward the first posture with respect to the first unit. ### Claim 11 A cartridge detachably mountable to a main assembly of an image forming apparatus, the cartridge comprising: a first unit including a rotation member configured to carry toner and rotate about a rotational axis, and a pressing member; and a second unit detachably mountable to the first unit, including an accommodating portion accommodating the toner, a memory storing information, and a pressed portion, wherein in a state in which the cartridge is mounted to the main assembly, the memory is provided on a bottom surface of the second unit mounted to the first unit, wherein, when the first unit is oriented in a mounting posture in which the cartridge is mounted to the main assembly, the second unit is capable of taking a first posture and a second posture with respect to the first unit, the second posture being a posture in which the memory is in a position above the position in which the memory is in the first posture, and wherein the second unit is configured to be transitioned from the second posture toward the first posture by a rotation of the second unit about a rotational axis extending along the direction of the rotational axis of the rotation member, and the pressing member presses the pressed portion of the second unit to maintain the second unit at the first posture. ### Claim 12 (depends on 11) The cartridge according to claim 11, wherein the rotation member includes a photosensitive drum. ### Claim 13 (depends on 12) The cartridge according to claim 12, wherein the second unit includes a developing roller configured to develop a toner image on the photosensitive drum. ### Claim 14 (depends on 13) The cartridge according to claim 13, wherein the pressing member presses the second unit so that the developing roller contacts with the photosensitive member when the second unit takes the first posture.