Invention Grant
- Patent Title: Development device and method capable of maintaining toner concentration at constant level without shortening life of developer, process cartridge, and imaging forming apparatus
- Patent Title (中): 能够将调色剂浓度保持在恒定水平而不缩短显影剂，处理盒和成像装置的寿命的显影装置和方法
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Application No.: US11373162Application Date: 2006-03-13
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Publication No.: US07702261B2Publication Date: 2010-04-20
- Inventor: Yuji Yasuda
- Applicant: Yuji Yasuda
- Applicant Address: JP Tokyo
- Assignee: Ricoh Co., Ltd.
- Current Assignee: Ricoh Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-068659 20050311
- Main IPC: G03G15/08
- IPC: G03G15/08
Abstract:
A development device includes a developer bearing member including a plurality of magnetic poles for bearing a two component developer, and rotating so that the toner is supplied to a latent image bearing member, a supply and conveyance path including a member configured to convey the developer in a first direction, a regulation member configured to regulate the developer on the developer bearing member, a collection and conveyance path including a member configured to convey the developer in a second direction parallel to the first direction, arranged below the development bearing member and at a substantially same height as the supply and conveyance path, an agitation and conveyance path including a member configured to convey the developer in a third direction opposite to the first direction, arranged at a substantially same height as the collection and conveyance path, and partition members partitioning the three paths.
Public/Granted literature
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