Electrophotography – Having particular structure – Modular or displaceable
Reexamination Certificate
1997-10-10
2001-08-07
Moses, Richard (Department: 2852)
Electrophotography
Having particular structure
Modular or displaceable
C399S111000, C399S120000
Reexamination Certificate
active
06272300
ABSTRACT:
FIELD OF THE INVENTION AND RELATED ART
The present invention relates to a process cartridge remanufacturing or recycling method, a process cartridge and an image forming apparatus to which the process cartridge is detachably mountable.
The image forming apparatus includes a laser beam printer, LED printer, an electrophotographic copying machine, a facsimile machine and a word processor, for example.
In an image forming apparatus such as a printer, a uniformly charged photosensitive drum is selectively exposed to light so that a latent image is formed, and the latent image is visualized by toner into a toner image, which in turn is transferred onto a recording material. In such an apparatus, maintenance operations for various parts have to be performed by an expert service man with resulting inconveniences on the user side.
In view of this, a photosensitive drum, a charger, a developing device and a cleaning device or the like, are unified into a cartridge. In this case the user, by loading the cartridge into a main assembly of the image forming apparatus, accomplished replenishment of toner, exchange of parts, such as image bearing member, having reached the ends of service lives, and, thus facilitates the maintenance operations (process cartridge system). The process cartridge system is disclosed in U.S. Pat. Nos. 3,985,436, 4,500,195, 4,540,268, 4,627,701 and so on.
With this cartridge, the users can perform, in effect, maintenance operations themselves by simply exchanging the cartridge without the necessity of a service man at regular intervals, and in addition, the toner is also replenished regularly. Thus, the operativity of a copying machine, printer, or the like, is improved.
Recently, however, re-manufacturing of the process cartridge has been desired.
SUMMARY OF THE INVENTION
Accordingly, it is a principal object of the present invention to provide a process cartridge remanufacturing method, a process cartridge and an image forming apparatus, by which a used process cartridge is remanufactured to effectively utilize the resources.
It is another object of the present invention to provide a process cartridge re-manufacturing method, a process cartridge and an image forming apparatus, which are simple.
It is another object of the present invention to provide a process cartridge re-manufacturing method by which the resources can be effectively used, and the environmental problems decreased.
These and other objects, features and advantages of the present invention will become more apparent upon consideration of the following description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings.
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Fujiwara Yasuo
Kawaguchi Hideshi
Matsuda Kenji
Miyake Hiroaki
Nomura Yoshiya
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Moses Richard
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