Photosensitive member cartridge and process cartridge

Patent metadata

Field	Value
Publication number	US-9823621-B2
Application number	US-201615166316-A
Country	US
Kind code	B2
Filing date	May 27, 2016
Priority date	May 29, 2015
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

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.

First claim

What is claimed is:

1. A photosensitive member cartridge detachably mountable to a main assembly of an image forming apparatus for forming an image on a sheet, said photosensitive member cartridge comprising:
a frame including a first side wall, a second side wall, and a bottom wall;
a photosensitive member on which a latent image is to be formed and which is provided in said frame;
a transfer member configured to transfer an image formed on said photosensitive member onto the sheet;
a mounting portion configured to detachably mount a developing cartridge including a developer carrying member configured to supply the developer onto said photosensitive member and memory means configured to store information;
a first electrical contact portion provided on said frame and electrically connectable with a main assembly electrical contact portion provided in the main assembly when said photosensitive member cartridge is mounted to the main assembly; and
a second electrical contact portion provided on said frame and configured to electrically connect said memory means and said first electrical contact portion with each other when said developing cartridge is mounted to said mounting portion,
wherein said first side wall is provided at one end portion of said frame in a longitudinal direction of said photosensitive member and said second side wall is provided at the other end portion of said frame in the longitudinal direction, and
wherein said first electrical contact is provided on said first side wall, and said second electrical contact is provided at a position closer to said first side wall than to said second side wall with respect to the longitudinal direction.

2. A cartridge according to claim 1 , wherein said bottom wall is provided between said first side wall and said second side wall in the longitudinal direction, and
wherein said second electrical contact portion is provided on said bottom wall that opposes a feeding surface on which the sheet is fed.

3. A process cartridge detachably mountable to a main assembly of an image forming apparatus for forming an image on a sheet, said process cartridge comprising:
a photosensitive member cartridge including a frame, a photosensitive member on which a latent image is to be formed and which is provided in said frame, a transfer member configured to transfer an image formed on said photosensitive member onto the sheet, and a mounting portion for mounting a developing cartridge;
a developing cartridge including a developer carrying member configured to supply the developer onto said photosensitive member and memory means configured to store information, said developing cartridge being detachably mounted to said mounting portion;
a first electrical contact portion provided on said frame and electrically connectable with a main assembly electrical contact portion provided in the main assembly when said photosensitive member cartridge is mounted to the main assembly; and
a second electrical contact portion provided on said frame and configured to electrically connect said memory means and said first electrical contact portion with each other when said developing cartridge is mounted to said mounting portion,
wherein said frame includes (i) a first side wall provided at one end portion of said frame in a longitudinal direction of the photosensitive member and (ii) a second side wall provided at the other end portion of said frame in the longitudinal direction, and
wherein said first electrical contact is provided on said first side wall, and said second electrical contact is provided at a position closer to said first side wall than to said second side wall with respect to the longitudinal direction.

4. A process cartridge according to claim 3 , wherein said frame includes a bottom wall provided between said first side wall and said second side wall in the longitudinal direction,
wherein said second electrical contact portion is provided on said bottom wall that opposes a feeding surface on which the sheet is fed.

Assignees

• Canon Kk

Inventors

• Miyamoto Jun
• Uyama Masao
• Matsuda Kenji
• Kikuchi Ken
• Miyazaki Jun

Classifications

• G03G21/1821

  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) · CPC title

• G03G21/1814 Primary

  Details of parts of process cartridge, e.g. for charging, transfer, cleaning, developing (G03G21/1835 takes precedence) · CPC title

• G03G15/0863

  provided with identifying means or means for storing process- or use parameters, e.g. an electronic memory · CPC title

• G03G21/1885

  position of the memory; memory housings; electrodes · CPC title

• G03G21/1652

  Electrical connection means · CPC title