发明名称 IMAGE FORMING APPARATUS
摘要 <P>PROBLEM TO BE SOLVED: To provide an image forming apparatus which prevents image noises when a counter development is performed using a DC bias development system. <P>SOLUTION: An absolute value of a fogging margin is made smaller than a default value so as to generate image noises easily (S501), and an electrostatic latent image of a test patch is formed on a peripheral surface of a photoreceptor drum by an exposing device (S502). Then, a density profile of the test patch is acquired (S503), and when image noise is determined to be generated (S504:YES), the absolute value of the fogging margin at a print time is made larger than the absolute value of the default value (S505), or otherwise (S504:NO), the fogging margin at a print time is made to be a default value (S506). <P>COPYRIGHT: (C)2013,JPO&INPIT
申请公布号 JP2012242494(A) 申请公布日期 2012.12.10
申请号 JP20110110469 申请日期 2011.05.17
申请人 KONICA MINOLTA BUSINESS TECHNOLOGIES INC 发明人 ONODA KO;HAGA MASAYASU;NAKAYAMA KANJI;YOSHIDA TOMOHISA;YOSHIDA SHIGETAKA;ITO NOBORU
分类号 G03G15/00;G03G15/06 主分类号 G03G15/00
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