发明授权
- 专利标题: Transfer roll and image forming apparatus
- 专利标题(中): 转印辊和成像装置
-
申请号: US13401114申请日: 2012-02-21
-
公开(公告)号: US08792813B2公开(公告)日: 2014-07-29
- 发明人: Nobuyuki Ichizawa
- 申请人: Nobuyuki Ichizawa
- 申请人地址: JP Tokyo
- 专利权人: Fuji Xerox Co., Ltd.
- 当前专利权人: Fuji Xerox Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oliff PLC
- 优先权: JP2011-171275 20110804
- 主分类号: G03G15/16
- IPC分类号: G03G15/16
摘要:
A transfer roll includes a cylindrical conductive substrate; an inner elastic layer having an Asker-C hardness of from 5° to 20°; and an outer elastic layer having an Asker-C hardness of from 30° to 45° in this order, wherein the transfer roll satisfies the following Expression (1): ρ0(in)>ρ0(out) Expression (1): wherein ρ0(in) is a volume resistivity of the inner elastic layer that is measured by applying an applied voltage of 1000 V in an environment of a temperature of 22° C. and a humidity of 55 RH % in an unloaded state, and ρ0(out) is a volume resistivity of the outer elastic layer that is measured by applying an applied voltage of 1000 V in an environment of a temperature of 22° C. and a humidity of 55 RH % in an unloaded state.
公开/授权文献
- US20130034373A1 TRANSFER ROLL AND IMAGE FORMING APPARATUS 公开/授权日:2013-02-07
信息查询