IMAGE FORMATION DEVICE

To make a photoreceptor less likely to wear than a case where potential of a surface of an image agent support material is set to ground potential at a fixed time regardless of a film thickness of the photoreceptor and speed at which the photoreceptor approaches the ground potential.SOLUTION: An ima...

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Bibliographic Details
Main Author MORIOKA TORU
Format Patent
LanguageEnglish
Japanese
Published 24.10.2019
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To make a photoreceptor less likely to wear than a case where potential of a surface of an image agent support material is set to ground potential at a fixed time regardless of a film thickness of the photoreceptor and speed at which the photoreceptor approaches the ground potential.SOLUTION: An image formation device 10 comprises: a photoreceptor 110 that has a film 114 formed on a surface and holds a latent image; a development device 130 provided with a development sleeve 138 for holding a developer to be supplied to the photoreceptor 110; and a controller 300 for controlling the development device 130. The controller 300 controls the development device 130 so as to increase a time required for potential of the surface of the development sleeve 138 to be ground potential in a stepwise manner according to thinning of a thickness of the film 114 of the photoreceptor 110 when the image formation is stopped.SELECTED DRAWING: Figure 5 【課題】感光体の膜の厚さや、感光体が接地電位に近づく速度にかかわらず、像剤保持体の表面の電位を一定の時間で接地電位とする場合と比較して、感光体を摩耗しにくくする。【解決手段】画像形成装置１０は、表面に膜１１４が形成されていて、潜像を保持する感光体１１０と、感光体１１０に供給する現像剤を保持する現像スリーブ１３８を備えた現像装置１３０と、現像装置１３０を制御する制御部３００とを有し、制御部３００は、画像形成を停止する際に、１１０感光体の膜１１４の厚さが薄くなることに応じて、現像スリーブ１３８の表面の電位を段階的に接地電位とするまでの時間を長くするように現像装置１３０を制御する。【選択図】図５
Bibliography:Application Number: JP20180072432