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US 5,708,932 AGranted
Charging system and electrophotography apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHideyuki Yano, Akio Maruyama, Yomishi Toshida, Noboru Kashimura, Kazushige Nakamura, Shoji Amamiya, Harumi Ishiyama, Tadashi Furuya
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Abstract
This invention relates to a charging system for charging a body to be electrified, comprising a body to be electrified, and a charging member which can be applied with voltage to brush the surface of said body to be electrified and charge it. Wherein the surface of the body to be electrified exhibits a contact angle of 90.degree. or more for water.
Claims23
An electrophotographic apparatus comprising:
- a photosensitive body which includes a surface layer with a volume resistivity of 1.times.10.sup.9 to 1.times.10.sup.14 .OMEGA.cm, and a photosensitive layer disposed inside of the surface layer;
- and
- a charging member to which a voltage is applied to charge the photosensitive body, said charging member slidably contacting the surface layer of the photosensitive body,
- wherein the surface layer of the photosensitive body includes a lubricating material and conductive particles, and has a contacting angle of 90.degree. or more relative to water.
1 more element
An electrophotography apparatus comprising:
- a photosensitive body comprising of photosensitive layer and a substrate which supports the photosensitive layers and can transmit light;
- and
- a magnetic brush member positioned in contact with the photosensitive body which can be applied with voltage to charge the photosensitive body and perform development,
- wherein the magnetic brush member has magnetic conductive carrier and toner, and part of the back surface of the photosensitive body corresponding to the contact area with the magnetic brush member is exposed to light, and the fluidity of the carrier is reduced, at least, to a degree indicated by a value of 45 sec/50 g.
1 more element
Dependencies are inferred from the claim text.