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US 7,742,720 B2Granted
Photosensitive member cartridge
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsYasushi Okabe, Shougo Sato, Tsutomu Suzuki
Life of this patent
Estimating the term…
Abstract
The invention provides a photosensitive member cartridge, that has, for example, a case including a bottom wall, an upper wall, and side walls. A photosensitive drum and a transfer roller are rotatably disposed in a space surrounded by the bottom wall, the upper wall, and the side walls. The bottom wall extends below the transfer roller. A developer cartridge, having a developing roller, is set on the extending portion of the bottom wall.
Claims20
A photosensitive member cartridge, comprising:
- a photosensitive drum;
- a cartridge frame configured to connect to a developer cartridge;
- and
- a lock device comprising:
- a rotating shaft;
- a lock lever rotatable about the rotating shaft, the lock lever including a contact portion;
- and
- a resin-made spring integrally formed as one piece with the contact portion and extending from the contact portion, a portion of the spring contacting the cartridge frame;
- wherein the contact portion is configured to be positioned relative to an action receiving member of the developer cartridge when the developer cartridge is connected to the cartridge frame, thereby establishing a locked state preventing the developer cartridge from becoming disconnected from the cartridge frame.
6 more elements
A photosensitive member cartridge, comprising:
- a photosensitive drum;
- a cartridge frame configured to connect to a developer cartridge;
- a restriction piece extending from the cartridge frame;
- and
- a lock device comprising:
- a rotating shaft;
- a lock lever rotatable about the rotating shaft, the lock lever including a contact portion;
- and
- a spring extending from the contact portion, a portion of the spring contacting the restriction piece;
- wherein the contact portion is configured to be positioned relative to an action receiving member of the developer cartridge when the developer cartridge is connected to the cartridge frame, thereby establishing a locked state preventing the developer cartridge from becoming disconnected from the cartridge frame.
7 more elements
A photosensitive member cartridge, comprising:
- a photosensitive drum;
- a cartridge frame configured to connect to a developer cartridge;
- and
- a lock device comprising:
- a rotating shaft;
- a lock lever rotatable about the rotating shaft, the lock lever including a contact portion;
- and
- a spring extending from the contact portion, a portion of the spring contacting the cartridge frame;
- wherein:
- the contact portion is configured to be positioned relative to an action receiving member of the developer cartridge when the developer cartridge is connected to the cartridge frame, thereby establishing a locked state preventing the developer cartridge from becoming disconnected from the cartridge frame;
- and
- the lock lever is positioned such that:
- during insertion of the developer cartridge into to the cartridge frame, the action receiving member contacts the lock lever, thereby causing the lock lever to be rotated from a first position to a second position against a force of the spring;
- and
- when the developer cartridge is connected to the cartridge frame, the force of the spring causes the lock lever to return to the first position where the action receiving member is facing a lower surface of the contact portion, thereby establishing the locked state that prevents the developer cartridge form becoming disconnected from the cartridge frame.
12 more elements
Dependencies are inferred from the claim text.