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1. 发明公开

EP2312396A4 MAGNETIC CARRIER, TWO-COMPONENT DEVELOPER, AND IMAGE-FORMING METHOD 有权
标题翻译：磁性载体，双组分显影剂和图像生成法
公开(公告)号：EP2312396A4
公开(公告)日：2013-07-17
申请号：EP09805082
申请日：2009-08-04
申请人： CANON KK
发明人： FUJIKAWA HIROYUKI , ISHIGAMI KOH , NAKAMURA KUNIHIKO , KOMATSU NOZOMU , BABA YOSHINOBU , YAMAMOTO TAKESHI , HARAGUCHI MANAMI , KUBO KENTA
IPC分类号： G03G9/113 , G03G9/08 , G03G9/107
CPC分类号： G03G9/107 , G03G9/0819 , G03G9/0827 , G03G9/1131 , G03G9/1136

2. 发明公开

EP2267553A4 IMAGE FORMATION DEVICE 审中-公开
公开(公告)号：EP2267553A4
公开(公告)日：2012-03-28
申请号：EP09729484
申请日：2009-04-10
申请人： CANON KK
发明人： KUBO KENTA , YAMAMOTO TAKESHI , HARAGUCHI MANAMI , MIYAZAWA TOMOAKI , HORIE JUUN
IPC分类号： G03G15/06 , G03G5/08 , G03G9/10 , G03G9/113 , G03G15/09
CPC分类号： G03G15/0907 , G03G9/10 , G03G9/107 , G03G2215/0602
摘要： An image forming apparatus comprising: a charging device that charges an image bearing member; an exposure device that forms said electrostatic image by exposing a surface of said image bearing member; a developing device that has a developer carrying member on which a developer including a toner and a magnetic carrier is carried; and a power supply that applies a developing bias on said developer carrying member; wherein said developing bias is an oscillating voltage having a peak voltage V 1 a peak voltage V 2 ; a duty ratio Du (%); said magnetic carrier has a characteristic that: said magnetic carrier has a resistivity Á which decreases in accordance with an increasing electric field strength, and a relative dielectric constant µ which increases in accordance with an increasing electric field strength; a product of a time constant µ 0 µÁ(s) of electric charge decay, which is denoted by a dielectric constant of a vacuum µ 0 , the relative dielectric constant µ of said magnetic carrier, and said resistivity Á in an electric field strength E 2D decided by said peak voltage V 2 and said dark potential V D , and said electric field strength E 2D satisfies a relation of 20 ‰¤ µ 0 µÁ E 2D (s·V/cm); and said time constant µ 0 µÁ(s) and said relative dielectric constant µ in an electric field strength E 1L , which is decided by said first peak voltage V 1 and said bright potential V L , satisfy the following relations: µ 0 µÁ(s) ‰¤ 6.0 x 10 -4 , and 30 ‰¤ µ.

3. 发明公开

EP2116904A4 TWO-COMPONENT DEVELOPING AGENT, MAKE-UP DEVELOPING AGENT, AND METHOD FOR IMAGE FORMATION 有权
标题翻译：两件促进发展基金MAKE-UP发展基金和成像过程
公开(公告)号：EP2116904A4
公开(公告)日：2013-01-30
申请号：EP08704357
申请日：2008-02-01
申请人： CANON KK
发明人： ISHIGAMI KOH , TERAUCHI KAZUO , UMEDA NORIYOSHI , IDA TETSUYA , OKAMOTO NAOKI , HOTTA YOJIRO , BABA YOSHINOBU , ITAKURA TAKAYUKI , YAMAMOTO TAKESHI , HARAGUCHI MANAMI , KUBO KENTA
IPC分类号： G03G9/09 , G03G9/08 , G03G9/10
CPC分类号： G03G15/01 , G03G9/0821 , G03G9/0823 , G03G9/083 , G03G9/09 , G03G9/10

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