# US 2021/0080903 A1 · Process cartridge, electrophotographic image forming apparatus, and electrophotographic photosensitive drum unit

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- Number: US 2021/0080903 A1
- Document ID: US20210080903A1
- Status: Published application
- Kind: A1
- Application number: 17/104,379
- Filed: 2020-11-25
- Published: 2021-03-18
- Earliest claimed: 2006-12-22
- Assignees: Canon Kabushiki Kaisha
- Applicants: Canon Kabushiki Kaisha
- Inventors: Takahito Ueno; Shigeo Miyabe; Masanari Morioka; Masato Hisano
- Web page: https://patentgrep.com/patent/US20210080903A1

## CPC

- G03G 21/1842: {for guiding and mounting the process cartridge, positioning, alignment, locks (G03G21/1864 and G03G21/1871 take precedence)}
- G03G 15/751: {relating to drum (G03G15/757 takes precedence)}
- G03G 15/757: {Drive mechanisms for photosensitive medium, e.g. gears}
- G03G 21/1647: {Mechanical connection means}
- G03G 21/1814: {Details of parts of process cartridge, e.g. for charging, transfer, cleaning, developing (G03G21/1835 takes precedence)}
- G03G 21/1817: {having a submodular arrangement}
- 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 21/185: {the process cartridge being mounted parallel to the axis of the photosensitive member}
- G03G 21/1853: {the process cartridge being mounted perpendicular to the axis of the photosensitive member}
- G03G 21/1857: {for transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms}
- G03G 21/186: {Axial couplings}
- G03G 2221/1657: transmitting mechanical drive power
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

A process cartridge comprises an electrophotographic photosensitive drum having a photosensitive layer at a peripheral surface thereof, and process means actable on the electrophotographic photosensitive drum. The process cartridge also includes a coupling member capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the electrophotographic photosensitive drum to the electrophotographic photosensitive drum and a disengaging angular position in which the coupling member is inclined away from the axis of the electrophotographic photosensitive drum from the rotational force transmitting angular position.

## Claims

### Claim 1

A process cartridge for use with a main assembly of an electrophotographic image forming apparatus, said main assembly including a driving shaft, to be driven by a motor, having a rotational force applying portion, wherein said process cartridge is dismountable from the main assembly in a direction substantially perpendicular to an axial direction of the driving shaft, said process cartridge comprising:
i) an electrophotographic photosensitive drum having a photosensitive layer at a peripheral surface thereof, said electrophotographic photosensitive drum being rotatable about an axis thereof;
ii) process means actable on said electrophotographic photosensitive drum;
iii) a coupling member engageable with said rotational force applying portion to receive a rotational force for rotating said electrophotographic photosensitive drum, said coupling member being capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating said electrophotographic photosensitive drum to said electrophotographic photosensitive drum and a disengaging angular position in which said coupling member is inclined away from the axis of said electrophotographic photosensitive drum from said rotational force transmitting angular position,
wherein when said process cartridge is dismounted from the main assembly of the electrophotographic image forming apparatus in a direction substantially perpendicular to the axis of said electrophotographic photosensitive drum, said coupling member moves from said rotational force transmitting angular position to said disengaging angular position.

### Claim at position 2

-183. (canceled)