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公开(公告)号：US11644762B2
公开(公告)日：2023-05-09
申请号：US17584363
申请日：2022-01-25
发明人： Yasuhiko Kinuta , Yuki Tagawa , Takuya Yamamoto , Ken Ozaki , Noboru Hirakawa
CPC分类号： G03G15/0233 , G03G21/1814
摘要： An image forming apparatus includes an electrophotographic photoreceptor having a friction coefficient of a surface of 0.8 or less; a charging device including a charging member that is in contact with and charges the surface of the electrophotographic photoreceptor and includes a conductive base material, an elastic layer provided on the conductive base material and having a storage elastic modulus G of 5.0 MPa or less at 100 Hz, and a surface layer provided on the elastic layer; an electrostatic latent image forming device that forms an electrostatic latent image on the charged surface of the electrophotographic photoreceptor; a developing device that develops the electrostatic latent image formed on the surface of the electrophotographic photoreceptor to form a toner image by a developer containing a toner; and a transfer device that transfers the toner image to a surface of a recording medium.
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公开(公告)号：US11809126B2
公开(公告)日：2023-11-07
申请号：US17582008
申请日：2022-01-24
发明人： Yasuhiko Kinuta , Yuki Tagawa , Ken Ozaki , Noboru Hirakawa
CPC分类号： G03G21/1814 , C08K3/04 , C08L15/02 , G03G5/047 , G03G5/147 , C08K3/013 , C08K2201/001
摘要： A charging member includes a conductive base material; an elastic layer that is provided on the conductive base material and has a storage elastic modulus G of 5.0 MPa or less at 100 Hz; and a surface layer that is provided on the elastic layer, in which in a Cole-Cole plot obtained by measuring the charging member in a range of 1 MHz to 0.1 Hz by an alternating current impedance method, a resistance component Ra of a capacitive semicircle including 2.5 kHz is 6.3×104Ω or less.
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