Cartridge and image forming apparatus

Patent metadata

Field	Value
Publication number	US-10627780-B2
Application number	US-201916250239-A
Country	US
Kind code	B2
Filing date	Jan 17, 2019
Priority date	Jan 23, 2018
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A cartridge mountable to and dismountable from a main assembly of an image forming apparatus includes a memory, a guide configured to guide a portion-to-be-guided provided in the main assembly and to guide a main assembly contact provided in the main assembly to a memory contact of the memory when the cartridge is mounted in the main assembly, and a grip portion. The guide is provided at a bottom of the cartridge when the cartridge is hung by gripping the grip portion and constitutes a part of a supporting portion configured to support the cartridge when the cartridge is placed on a horizontal placement surface. The guide has a chamfered surface formed by being chamfered. When the cartridge is supported at the supporting portion, the chamfered surface opposes the horizontal placement surface, and a surface of the memory contact is inclined with respect to the horizontal placement surface.

First claim

What is claimed is:

1. A cartridge mountable to and dismountable from a main assembly of an image forming apparatus and usable for forming an image on a recording material, said cartridge comprising:
a memory configured to store information on said cartridge;
a guide configured to guide a portion-to-be-guided provided in the main assembly and to guide a main assembly contact provided in the main assembly to a memory contact of said memory when said cartridge is mounted in the main assembly; and
a grip portion,
wherein said guide is provided at a bottom of said cartridge when said cartridge is hung by gripping said grip portion and constitutes a part of a supporting portion configured to support said cartridge when said cartridge is placed on a horizontal placement surface,
wherein said guide has a chamfered surface formed by being chamfered, and
wherein when said cartridge is supported at said supporting portion, the chamfered surface opposes the horizontal placement surface, and a surface of said memory contact is inclined with respect to the horizontal placement surface.

2. A cartridge according to claim 1 , wherein a normal extending in a direction in which the surface of said memory contact on a side contactable to said main assembly contact, and the surface of said memory contact is formed so as to be spaced from the horizontal placement surface upwardly.

3. A cartridge according to claim 1 , further comprising,
an upper guide provided on a side opposite from said guide with respect to said memory contact, and
an upper guide chamfered surface provided on said upper guide,
wherein the chamfered surface of said guide has a chamfered angle larger than the upper guide chamfered surface.

4. A cartridge according to claim 1 , wherein in a cross-section perpendicular to a longitudinal direction of said cartridge, the chamfered surface of said guide has an angle of 0° to 20° with respect the horizontal placement surface.

5. A cartridge according to claim 1 , wherein when said cartridge is placed on the horizontal placement surface, said memory is provided above the chamfered surface of said guide.

6. A cartridge according to claim 1 , further comprising an image bearing member configured to form a latent image.

7. A cartridge according to claim 1 , further comprising,
an image bearing member configured to form a latent image, and
process means actable on said image bearing member.

8. A cartridge according to claim 7 , wherein said process means is developing means configured to develop the latent image.

9. A cartridge according to claim 1 , further comprising developing means configured to develop a latent image formed on an image bearing member.

10. An image forming apparatus comprising:
a cartridge according to claim 1 ; and
a transfer portion configured to transfer a toner image formed by said cartridge, onto the recording material.

Assignees

• Canon Kk

Inventors

• Fujiwara Akihiro
• Horikawa Tadashi
• Matsumaru Naoki
• Murakami Ryuta
• Makiguchi Daisuke

Classifications

• G03G21/1846

  using a handle for carrying or pulling out of the main machine, legs of casings · CPC title

• G03G21/1842 Primary

  for guiding and mounting the process cartridge, positioning, alignment, locks (G03G21/1864 and G03G21/1871 take precedence) · CPC title

• G03G21/1878

  Electronically readable memory · 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 Primary

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