Invention Grant
- Patent Title: Two-component developing method and developer used therefor
- Patent Title (中): 用于其的双组分显影方法和显影剂
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Application No.: US12948127Application Date: 2010-11-17
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Publication No.: US08385790B2Publication Date: 2013-02-26
- Inventor: Mitsuo Aoki , Hiroyuki Kishida
- Applicant: Mitsuo Aoki , Hiroyuki Kishida
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-005171 20100113
- Main IPC: G03G15/09
- IPC: G03G15/09

Abstract:
A two-component developing method, including regulating a two-component developer borne on a developer bearer with a doctor blade; and transferring the regulated two-component developer to the developer bearer to develop a latent image on an image bearer, wherein the two-component developer includes a pulverized toner having a volume-average particle diameter of from 3.0 to 6.0 μm, including particles having a particle diameter not greater than 4.0 μm in an amount not less than 30% by number, and including particles having a particle diameter not greater than 2.0 μm in an amount not greater than 10% by number, and wherein the doctor blade has a surface regulating the developer at an upstream side relative to a rotational direction of the developer bearer, which has a surface roughness Ra not greater than 0.2 μm.
Public/Granted literature
- US20110170915A1 TWO-COMPONENT DEVELOPING METHOD AND DEVELOPER USED THEREFOR Public/Granted day:2011-07-14
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