Process cartridge and image forming apparatus

Patent metadata

Field	Value
Publication number	US-9501034-B2
Application number	US-201514829004-A
Country	US
Kind code	B2
Filing date	Aug 18, 2015
Priority date	Jan 11, 2006
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.

First claim

The invention claimed is:

1. An image forming apparatus comprising:
i) a main assembly to which a process cartridge is detachably mountable, the main assembly including:
a projecting force applying member configured to apply a projecting force to the process cartridge with a closing operation of an opening and closing cover when the process cartridge is mounted in the main assembly;
a spacing force applying member configured to apply a spacing force to the process cartridge when the process cartridge is mounted in the main assembly; and

ii) the process cartridge including:
an electrophotographic photosensitive drum;
a developing roller configured to develop an electrostatic latent image formed on the electrophotographic photosensitive drum;
a drum frame supporting the electrophotographic photosensitive drum;
a developing frame supporting the developing roller and movable relative to the drum frame to move between a contact position in which the developing roller is in contact with the electrophotographic photosensitive drum and a spaced position in which the developing roller is spaced from the electrophotographic photosensitive drum;
a pivoting member (i) including a spacing force receiving portion and (ii) pivotable about a pivot axis between a projected position in which the spacing force receiving portion is projected outside the developing frame and a retracted position in which the spacing force receiving portion is retracted from the projected position toward an inside of the developing frame, the spacing force receiving portion being capable of receiving the spacing force from the spacing force applying member to move the developing frame from the contact position to the spaced position when the pivotable member is in the projected position; and
a sliding member being capable of receiving the projecting force from the projecting force applying member to slide along a sliding direction that is substantially parallel to the pivot axis to apply a pivoting force to the pivotable member to pivot the pivotable member from the retracted position to the projected position.

Assignees

• Canon Kk

Inventors

• Yoshimura Akira
• Murayama Kazunari
• Nittani Susumu
• Numagami Atsushi

Classifications

• G03G21/1623 Primary

  Means to access the interior of the apparatus · CPC title

• G03G21/1647

  Mechanical connection means · CPC title

• G03G2221/1861

  Rotational subunit connection · CPC title

• G03G2215/0119

  Linear arrangement adjacent plural transfer points · CPC title

• G03G2221/169

  Structural door designs · CPC title