Invention Grant
- Patent Title: Development device, and process cartridge and image forming apparatus including same in which an angle formed using an end face of a buffer area is smaller than an angle of twist of a spiral blade
- Patent Title (中): 显影装置,处理盒和包括其的成像装置,其中使用缓冲区域的端面形成的角度小于螺旋叶片的扭曲角度
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Application No.: US13556433Application Date: 2012-07-24
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Publication No.: US08855536B2Publication Date: 2014-10-07
- Inventor: Hideki Kimura , Kunihiro Ohyama , Masayuki Yamane , Yoshihiro Fujiwara , Masaki Takahashi , Toshiki Hayashi
- Applicant: Hideki Kimura , Kunihiro Ohyama , Masayuki Yamane , Yoshihiro Fujiwara , Masaki Takahashi , Toshiki Hayashi
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2011-179917 20110819
- Main IPC: G03G15/08
- IPC: G03G15/08 ; G03G15/09

Abstract:
A development device includes a development casing, a developer bearer, a first developer conveyance member to supply developer to the developer bearer, a second developer conveyance member to transport developer axially, and a partition dividing an interior of the development casing into a supply channel and a collecting channel via which developer received from a downstream end portion of the supply channel is forwarded to an upstream end portion of the supply channel. The supply channel includes a conveyance area and a buffer area disposed adjacent to the conveyance area in a direction perpendicular to an axial direction to temporarily retain developer and midway in the developer conveyance direction inside the supply channel, and an upstream end face defining an upstream end of the buffer area is inclined relative to the axial direction to draw away from the conveyance area downstream in the developer conveyance direction.
Public/Granted literature
- US20130045029A1 DEVELOPMENT DEVICE, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS INCLUDING SAME Public/Granted day:2013-02-21
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