ELECTROPHOTOGRAPHIC APPARATUS HAVING DEVELOPING DEVICE WITH SEALS FOR PREVENTING TONER LEAKAGE

A developing device used in an electrophotographic apparatus has seal members fixedly disposed between both end portions of a developing roller and those portions of inner walls of a device casing which correspond to both end portions of the developing roller. The seal members are made of a material...

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Main Authors KATAGATA, SATOSHI, ISHIKAWA, TAKASHI, SATOU, KOUICHIROU, ISHIKAWA, MASAAKI, OKANO, YOSHIAKI, KABAI, TAKAHITO, FUKUYAMA, HIROTAKA, SAKAI, CHINOBU, HASHIZUME, HIROSHI, IGUCHI, MICHIHISA, NAKAMURA, TETSUYA, ARAI, SEIJI
Format Patent
LanguageEnglish
French
Published 04.01.2000
Edition5
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:A developing device used in an electrophotographic apparatus has seal members fixedly disposed between both end portions of a developing roller and those portions of inner walls of a device casing which correspond to both end portions of the developing roller. The seal members are made of a material which can be charged by friction with the developing roller to have the same polarity as charged toner. The toner is blocked by the seal members and prevented from entering end portions of the developing roller.
Bibliography:Application Number: CA19932105259