ELECTROPHOTOGRAPHIC COLOR IMAGE FORMING APPARATUS

• US 20080159781A1
• Filed: 01/17/2007
• Published: 07/03/2008
• Est. Priority Date: 12/28/2006
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kawanami, Takeo, Sakurai, Hiromi, Noguchi, Tomio, Imaizumi, Chikara
• Granted Patent: US 7,567,769 B2
• Time in Patent Office: Days
• US Class Current: 399/110
• CPC Class Codes: G03G 21/1623 Means to access the interior of the apparatus
• CPC Class Codes: G03G 2215/0125 the linear arrangement being horizontal or slanted
• CPC Class Codes: G03G 2221/1684 using extractable subframes, e.g. on rails or hinges

Abstract

A color electrophotographic image forming apparatus having a main assembly, to which a process cartridge is detachably mountable, for forming a color image on a recording material, wherein the process cartridge includes an electrophotographic photosensitive drum and process means actable on the electrophotographic photosensitive drum, the apparatus includes an opening provided in the main assembly of the apparatus; a movable member which is linearly movable between an inside and an outside of the opening in a direction crossing with a longitudinal direction of the electrophotographic photosensitive drum while carrying plurality of such process cartridges; an accommodating portion for accommodating the process cartridges; and an urging member, provided above a movement path of the process cartridges, while being carried on the movable member, from the opening to the accommodating portion, for contacting the process cartridge passing therebelow to urge the process cartridge toward the movable member.

Claims

1. A color electrophotographic image forming apparatus having a main assembly, to which a process cartridge is detachably mountable, for forming a color image on a recording material, wherein said process cartridge includes an electrophotographic photosensitive drum and process means actable on said electrophotographic photosensitive drum, said apparatus comprising:

an opening provided in said main assembly of the apparatus;

a movable member which is linearly movable between an inside and an outside of said opening in a direction crossing with a longitudinal direction of said electrophotographic photosensitive drum while carrying plurality of such process cartridges;

an accommodating portion for accommodating said process cartridges; and

an urging member, provided above a movement path of said process cartridges, while being carried on said movable member, from said opening to said accommodating portion, for contacting said process cartridge passing therebelow to urge said process cartridge toward said movable member.

2. An apparatus according to claim 1, wherein said urging member contacts all of said process cartridges passing therebelow to urge elastically said process cartridge toward said movable member.

3. An apparatus according to claim 1, wherein said urging member contacts such a process cartridge as is deviated upwardly to a degree enough to contact to said urging member.

4. An apparatus according to any one of claims 1-3, wherein said urging member is provided at each of lateral ends with respect to the movement path to contact said process cartridge at each of longitudinal end portions.

5. An apparatus according to any one of claims 1- 3, wherein said urging member is provided at one of lateral ends with respect to the movement path to contact said process cartridge at one of longitudinal end portions.

6. An apparatus according to claim 1, 2, or 3, wherein said process cartridge is supported by a portion of said movable member which is contacted by said urging member.

7. An apparatus according to claim 1, 2, or 3, wherein said urging member is fixed and projected from said main assembly of the apparatus and is provided at an opening side with an inclined surface lowering from an upstream to a downstream with respect to a moving direction of said movable member from the outside to the inside.

8. An apparatus according to claim 7, wherein said urging member is provided at a side remote from said opening with an inclined surface lowering from an upstream to a downstream with respect to a moving direction of said movable member from the inside to the outside.

9. An apparatus according to claim 1, 2, or 3, wherein said urging member is urged downwardly by an elastic force.

10. An apparatus according to claim 1, 2, or 3, wherein said urging member is in said opening.

11. An apparatus according to claim 1, 2, or 3, wherein said movable member carries a process cartridge containing a black color developer, a process cartridge containing a cyan color developer, a process cartridge containing a magenta color developer and a process cartridge containing a yellow color developer in the order named from an upstream to a downstream with respect to a moving direction of said movable member from the outside to the inside.