Electrophotography – Having particular structure – Modular or displaceable
Reexamination Certificate
1996-07-26
2001-05-01
Grainger, Quana M. (Department: 2852)
Electrophotography
Having particular structure
Modular or displaceable
C399S013000
Reexamination Certificate
active
06226476
ABSTRACT:
FIELD OF THE INVENTION AND RELATED ART
The present invention relates to a developing device holder, a process cartridge and an electrophotographic image forming apparatus usable with the process cartridge.
Here, the electrophotographic image forming apparatus means an apparatus which forms images on a recording medium, using an electrophotographic image forming process. It includes an electrophotographic copying machine, an electrophotographic printer (for example, LED printer, laser beam printer), an electrophotographic facsimile machine, an electrophotographic word processor, and the like.
The process cartridge means a cartridge having as a unit an electrophotographic photosensitive member, and charging means, developing means and cleaning means, which is detachably mountable to a main assembly of an image forming apparatus. It may include as a unit an electrophotographic photosensitive member and at least one of charging means, developing means and cleaning means. It may include as a unit developing means and an electrophotographic photosensitive member.
An image forming apparatus using electrophotographic process is known which is used with the process cartridge. This is advantageous in that the maintenance operation can be, in effect, carried out by the users thereof without expert service persons, and therefore, the operativity can be remarkably improved. Therefore, this type is now widely used.
The process cartridge is constituted by a cleaning unit having integral charging means, cleaning means and a photosensitive drum, and a developing unit having integral developing means and a toner container for supplying toner to the developing means. The process cartridge is provided by coupling the cleaning unit and the developing unit with a coupling member.
Here, the developing unit comprises a toner frame for accommodating the toner to be supplied to the developing means, and a developing device frame for supporting the developing means. The toner frame and the developing device frame are unified by ultrasonic welding or the like.
To the developing frame, developing device holder is mounted.
It is desired to improve the assemblying efficiency in the process cartridge using a developing device holder.
Thus, the present invention was made to further develop the aforementioned art.
SUMMARY OF THE INVENTION
Accordingly, it is a principal object of the present invention to provide a developing device holder, process cartridge and an electrophotographic image forming apparatus wherein parts are efficiently mounted to a developing frame.
It is another object of the present invention to provide a developing device holder, process cartridge and an electrophotographic image forming apparatus, which are easy to assemble.
It is a further object of the present invention to provide a developing holder which has multiple functions and which is not expensive.
It is a further object of the present invention to provide a developing device holder, process cartridge and electrophotographic image forming apparatus using the same, wherein a guiding member for guiding the process cartridge upon mounting thereof to the main assembly, is provided on the same side as an antenna contact.
These and other objects, features and advantages of the present invention will become more apparent upon a consideration of the following description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 3964382 (1976-06-01), Baar et al.
patent: 5258811 (1993-11-01), Miyake et al.
patent: 5272505 (1993-12-01), Shishido et al.
patent: 5283619 (1994-02-01), Nomura et al.
patent: 5294960 (1994-03-01), Nomura et al.
patent: 5432590 (1995-07-01), Nomura et al.
patent: 5543898 (1996-08-01), Shishido et al.
patent: 5652647 (1997-07-01), Yashiro et al.
patent: 5878309 (1999-03-01), Nomura et al.
patent: 0 586 044 A2 (1993-06-01), None
patent: 0 679 964 A2 (1995-11-01), None
patent: 0 708 387 A2 (1996-04-01), None
patent: 3-114089 (1991-05-01), None
patent: 6-130745 (1994-05-01), None
patent: 07-077921 (1995-03-01), None
Miyabe Shigeo
Nomura Yoshiya
Yokomori Kanji
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Grainger Quana M.
LandOfFree
Developing device holder having antenna contact mounting unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Developing device holder having antenna contact mounting unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Developing device holder having antenna contact mounting unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2566115