IMAGE FORMING APPARATUS
To accurately calculate the amount of wear of an OPC drum with a simple and inexpensive configuration.SOLUTION: An image forming apparatus (1) is provided with: a monochrome OPC drum (21B); a color OPC drum (21A); an electrifier (22A) that electrifies a surface of photosensitive layer (29A) of the c...
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Main Authors | , |
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Format | Patent |
Language | English Japanese |
Published |
21.12.2023
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Subjects | |
Online Access | Get full text |
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Summary: | To accurately calculate the amount of wear of an OPC drum with a simple and inexpensive configuration.SOLUTION: An image forming apparatus (1) is provided with: a monochrome OPC drum (21B); a color OPC drum (21A); an electrifier (22A) that electrifies a surface of photosensitive layer (29A) of the color OPC drum; a developing unit (23A) that performs development by using developer including toner and carrier; and a calculation unit (42) that calculates the amount of wear of the photosensitive layer of the color OPC drum. The electrifier electrifies the photosensitive layer of the color OPC drum during monochrome printing to a surface potential for preventing toner adhesion and carrier adhesion to the color OPC drum. The calculation unit calculates the amount of wear of the photosensitive layer of the color OPC drum during monochrome printing to be less than that during color printing.SELECTED DRAWING: Figure 2
【課題】簡易かつ安価な構成でOPCドラムの摩耗量を精度よく算出する。【解決手段】画像形成装置(1)には、モノクロ用OPCドラム(21B)と、カラー用OPCドラム(21A)と、カラー用OPCドラムの感光層(29A)の表面を帯電させる帯電器(22A)と、トナー及びキャリアを含んだ現像剤を使用して現像する現像器(23A)と、カラー用OPCドラムの感光層の摩耗量を算出する算出部(42)と、が設けられている。帯電器は、モノクロ印刷中のカラー用OPCドラムの感光層を、当該カラー用OPCドラムへのトナー付着及びキャリア付着を抑える表面電位に帯電させている。算出部は、カラー印刷中よりもモノクロ印刷中のカラー用OPCドラムの感光層の摩耗量を少なく算出する。【選択図】図2 |
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Bibliography: | Application Number: JP20220093778 |