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:
Nov. 20, 2007
Filed:
Jul. 27, 2005
Applicant:
Takeo Mizobe, Osaka, JP;
Inventor:
Takeo Mizobe, Osaka, JP;
Assignee:
Kyocera Mita Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/09 (2006.01);
U.S. Cl.
CPC ...
Abstract
The developing deviceincludes a stirrer and transferora magnetic rollerand a developing roller, that are disposed in a housingwhich contains the two-component developing agent including the magnetic carrier and the non-magnetic toner, wherein volumetric mean particle size of the non-magnetic toner is set in a range from 6 to 11 μm and proportion of toner particles not larger than 4 μm is set to 8% by number or less, thereby making it possible to prevent imaging defect (ghost) and sticking of the toner onto the developing roller from occurring.