Invention Grant
- Patent Title: Develop roller, develop unit, process cartridge, and image forming apparatus
- Patent Title (中): 显影辊，显影单元，处理盒和成像设备
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Application No.: US13091481Application Date: 2011-04-21
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Publication No.: US08731444B2Publication Date: 2014-05-20
- Inventor: Masayuki Ohsawa , Toshio Kojima , Kyohta Koetsuka , Yoshiyuki Takano , Noriyuki Kamiya , Takashi Innami , Takumi Terasaka
- Applicant: Masayuki Ohsawa , Toshio Kojima , Kyohta Koetsuka , Yoshiyuki Takano , Noriyuki Kamiya , Takashi Innami , Takumi Terasaka
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2010-106150 20100506
- Main IPC: G03G15/09
- IPC: G03G15/09
Abstract:
A develop roller includes a magnet roller, and a develop sleeve containing the magnet roller and comprising a plurality of depressions in an elliptic shape regularly arranged with an interval in a longitudinal direction on a surface onto which developer is attracted by a magnetic force of the magnet roller, wherein the depressions are arranged such that a longitudinal direction of the depressions is intersected with the longitudinal direction of the develop sleeve, and a downstream side of the depressions are formed to be deeper than an upstream side in a rotary direction of the develop sleeve.
Public/Granted literature
- US20110274471A1 DEVELOP ROLLER, DEVELOP UNIT, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS Public/Granted day:2011-11-10
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