Process kit and an image forming apparatus using the same

• US 4,551,000 A
• Filed: 03/22/1982
• Issued: 11/05/1985
• Est. Priority Date: 04/01/1981
• Status: Expired due to Term

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nomura, Akihiro, Kanemitsu, Shinji, Mizutani, Morikazu, Nishino, Fumio, Nitanda, Hiroshi, Onoda, Shigeyoshi
• Primary Examiner(s): Grimley, A. T.
• Assistant Examiner(s): PENDEGRASS, JOAN H
• Application Number:
  US06/360,686
• Time in Patent Office: 1,324 Days
• Field of Search: 355/3 R, 355/3 DR, 355/14 R, 355/14 CU, 354/275, 354/276, 354/468
• US Class Current: 399/111
• CPC Class Codes: G03G 21/1875 provided with identifying means or means for storing process- or use parameters, e.g. lifetime of the cartridge
• CPC Class Codes: G03G 21/1896 mechanical or optical identification means, e.g. protrusions, bar codes
• CPC Class Codes: G03G 2221/1663 having lifetime indicators
• CPC Class Codes: G03G 2221/183 Process cartridge

Abstract

A process kit containing consumable members is detachably mountable in the main body of an operating device and includes apparatus for indicating when the useful life of the process kit is about to expire and when it has expired.

Claims

1. A process kit receivable into an image forming apparatus, comprising:

process means provided in said process kit, said process means comprising an image bearing member and means actable thereon for repetitive image formation,

supporting means for supporting said process means as a unit,

counting means for detecting and counting the number of operations of the process kit and memorizing information relating to the amount of use;

a battery having a property of attenuating with time, and the attenuation being used for providing information as to the end of the service life of the process kit that is caused by the deterioration of the process kit over a period of time.

2. An image forming apparatus, comprising:

a process kit including process means provided in said process kit, said process means comprising an image bearing member and means actable thereon for repetitive image formation, and supporting means for supporting said process means as a unit, and means for memorizing an amount of use of said process kit;

a main assembly for cooperating with said process kit to form an image, said main assembly including means for forming a space for receiving said process kit and a guide for mounting said process kit into said main assembly and demounting said process kit from said main assembly; and

means for providing information relating to the amount of use of said process kit in accordance with the content of said memory means.

3. An image forming apparatus, comprising:

a process kit including, as a unit, an image bearing member, means actable thereon and disposed around said image bearing member, means for integrally supporting said image bearing member and said actable means, means for receiving a driving force, means for memorizing the amount of use of said process kit, means for displaying the amount of use of said process kit relating to the content of said memory means; and

a main assembly into which said process kit is mountable and from which it is demountable, said main assembly including means for forming a space for receiving said process kit and means, engageable with said driving force receiving means, for transmitting driving force to said driving force receiving means.

4. An apparatus according to claim 3, wherein said display means displays through an opening of a cover of said main assembly to allow observation from outside.

5. An apparatus according to claim 3, wherein said memory means is operable in response to rotational movement of said image bearing member, the amount of which is memorized as the amount of operations of said process kit.

6. An apparatus according to claim 5, wherein said display means is supported integrally with said memory means of said process kit and includes a member rotatable with said image bearing member.

7. An image forming apparatus, comprising:

a process kit including as a unit an image bearing member, means actable thereon and disposed around said image bearing member, means for integrally supporting said image bearing member and said actable means, means for receiving a driving force, means for memorizing an amount of use of said process kit; and

a main assembly into which said process kit is mountable and from which it is demountable, said main assembly including means for forming a space for receiving said process kit, means, engageable with said driving force receiving means, for transmitting driving force to said driving force receiving means and means cooperable with said memory means to display information relating to the content of said memory means.

8. An apparatus according to claim 7, wherein said display means displays through an opening of a cover of said main assembly to allow observation from outside.

9. An apparatus according to claim 7, wherein said memory means is operable in response to rotational movement of said image bearing member, the amount of which is stored as the amount of operations of said process kit.

10. An image forming apparatus comprising:

a process kit including as a unit an image bearing member, means actable thereon and disposed around said image bearing member, means for integrally supporting said image bearing member and said actable means, means for receiving a driving force, means for memorizing an amount of use of said process kit;

a main assembly into which said process kit is mountable and from which it is demountable, said main assembly including means for forming a space for receiving said process kit, means, engageable with said driving force receiving means, for transmitting driving force to said driving force receiving means and means cooperable with said memory means to display information relating to the content of said memory means, and wherein said memory means is operable by in response to rotational movement of said image bearing member the amount of which is stored as the amount of operations of said process kit, wherein said display means is supported integrally with said memory means of said process kit and includes a member rotatable with said image bearing member.

11. An image forming apparatus, comprising:

a process kit including process means provided in said process kit, said process means comprising an image bearing member and means actable thereon for repetitive image formation, supporting means for supporting said process means as a unit, and means for memorizing an amount of use of said process kit;

a main assembly for cooperating with said process kit to form an image, said main assembly including means for forming a space for receiving said process kit and a guide for mounting said process kit into said main assembly and demounting said process kit from said main assembly;

switching means operable between on and off positions in response to image forming operations; and

display means for displaying information relating to the amount of use of said process kit in accordance with the content of said memory means.

12. An apparatus according to claim 11, wherein said switching means is provided in said process kit.

13. An apparatus according to claim 11, wherein said switching means is provided in said main assembly, said process kit further including means for connecting said memory means and said switching means.

18. An apparatus according to any one of claims 2, 3, 7 or 11, wherein said memory means is effective to store a quantity of material to be consumed during image forming operations using said process unit.

19. An apparatus according to claim 18, wherein said material is image transfer material on which images are formed using said process unit.

20. A process unit according to claim 18, wherein said material is image transfer material on which images are formed using said process unit.

14. A process kit mountable into and demountable from a main assembly comprising as a unit:

an image bearing member;

means actable thereon and disposed around said image bearing member;

means for integrally supporting said image bearing member and said actable means;

means adapted to receive a driving force from the main assembly;

means for memorizing the amount of use of said process kit; and

means cooperable with the main assembly to provide information relating to the control of said memory means.

15. A process kit according to claim 14, wherein said process means includes a photosensitive member, a charger, a developing device, and cleaning means.

16. A process kit according to claim 15, wherein said memory means converts movement of said photosensitive member to rotation of a rotatable member, and displacement of said rotatable member is memorized as the amount of operations of said process kit, and wherein said display means is supported integrally with said memory means and rotates in accordance with rotation of said rotatable member.

21. A process unit according to claim 14 or 17, wherein said memory means is effective to store a quantity of material to be consumed during image forming operations using said process unit.

17. A process kit mountable into and demountable from a main assembly, comprising as a unit:

an image bearing member;

means actable thereon and disposed around said image bearing member;

means for integrally supporting said image bearing member and said actable means;

means adapted to receive a driving force from the main assembly;

means for memorizing the amount of use of said process kit; and

means cooperable with the main assembly to provide information relating to the content of said memory means.