发明名称 Image forming apparatus for performing exposure a plurality of times
摘要 An image forming apparatus includes; an exposure unit configured to perform, based on the image data, first exposure for a photosensitive member and second exposure for the photosensitive member exposed by the first exposure; a determination unit configured to determine a type of the image to be formed based on image data; and a control unit configured to control the exposure unit such that a difference in an exposure amount between the first exposure and the second exposure performed based on the image data when the type of the image is a character is larger than the difference in the exposure amount between the first exposure and the second exposure performed based on the image data when the type of the image is a picture.
申请公布号 US9091956(B2) 申请公布日期 2015.07.28
申请号 US201414469393 申请日期 2014.08.26
申请人 CANON KABUSHIKI KAISHA 发明人 Zaima Nobuhiko;Itagaki Tomohisa;Ishihara Takahiro;Shirafuji Yasuhito
分类号 G03G15/04;G03G15/00;G03G13/04;G03G15/043 主分类号 G03G15/04
代理机构 Fitzpatrick, Cella, Harper & Scinto 代理人 Fitzpatrick, Cella, Harper & Scinto
主权项 1. An image forming apparatus for forming an image based on image data, comprising: a photosensitive member; an exposure unit configured to perform, based on the image data, first exposure for said photosensitive member and second exposure for said photosensitive member exposed by the first exposure, one pixel included in an image being formed by the first exposure and the second exposure; a determination unit configured to determine whether an image to be formed is a first type or a second type based on the image data, a pixel included in an image of the first type being sharper than a pixel included in an image of the second type; and a control unit configured to control said exposure unit such that a difference in an exposure amount between the first exposure and the second exposure when forming the image of the first type is larger than a difference in an exposure amount between the first exposure and the second exposure when forming the image of the second type.
地址 Tokyo JP