The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2013
Filed:
Nov. 17, 2010
Mitsuo Aoki, Shizuoka-ken, JP;
Hiroyuki Kishida, Shizuoka-ken, JP;
Mitsuo Aoki, Shizuoka-ken, JP;
Hiroyuki Kishida, Shizuoka-ken, JP;
Ricoh Company, Limited, Tokyo, JP;
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.