PROCESS CARTRIDGE COMPRISING GROUNDING, CHARGING BIAS, AND DEVELOPING BIAS CONTACTS AND INPUT AND OUTPUT CONTACTS, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS TO WHICH THE PROCESS CARTRIDGE IS DETACHABLY MOUNTABLE

A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes an electrophotographic photosensitive drum; a charging roller for charging the drum; a developing roller for developing an image formed on the drum; an input electrode; an output el...

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Bibliographic Details
Main Authors YOKOI AKIYOSHI, KARAKAMA TOSHIYUKI, OGUMA TORU
Format Patent
LanguageEnglish
Published 12.10.2004
Edition7
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes an electrophotographic photosensitive drum; a charging roller for charging the drum; a developing roller for developing an image formed on the drum; an input electrode; an output electrode; a grounding contact for grounding the drum; a charging bias contact receiving a charging bias voltage applied to the charging roller; a developing bias contact receiving a developing bias applied to the developing roller; an input electrical contact for receiving an input bias applied to the input electrode; and an output contact for transmitting, to the main assembly, an output corresponding to electrostatic capacities between the input and output electrodes and between the developing roller and the output electrode to detect in substantially real time a remaining amount of developer in the cartridge.
Bibliography:Application Number: US20020091287