发明授权
- 专利标题： Development device, and process cartridge and image forming apparatus including same
- 专利标题（中）： 显影装置，处理盒和包括其的成像装置
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申请号： US13555872申请日： 2012-07-23
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公开(公告)号： US08989621B2公开(公告)日： 2015-03-24
- 发明人: Yoshio Hattori , Toshio Koike , Hiroaki Okamoto , Atsushi Nakamoto , Yoshiyuki Fukuda
- 申请人： Yoshio Hattori , Toshio Koike , Hiroaki Okamoto , Atsushi Nakamoto , Yoshiyuki Fukuda
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Harness, Dickey & Pierce
- 优先权： JP2011-168040 20110801
- 主分类号： G03G15/08
- IPC分类号： G03G15/08
摘要：
A development device includes a development casing for containing two-component developer, a developer bearer, a developer regulator to adjust an amount of developer carried on the developer bearer, a first developer conveyance member to supply developer to the developer bearer, a second developer conveyance member to transport axially developer separated from the developer bearer, first and second conveyance channels divided by a partition, in which the first and second developer conveyance members are respectively provided, and a removable sheet member to cover the developer bearer in an area facing the developer regulator, the first and second conveyance channels, and the partition. A first end portion of the sheet member extends from the second conveyance channel outside the development casing through a through hole formed in the development casing, and a second end portion thereof is retained by a retainer at a position outside the developer regulator.