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.

Date of Patent:
Dec. 07, 2004

Filed:

Jan. 18, 2002
Applicant:
Inventors:

Takeshi Tanimoto, Kawasaki, JP;

Kenji Yagi, Hyogo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 2/100 ; G03G 1/508 ; G03G 1/509 ;
U.S. Cl.
CPC ...
G03G 2/100 ; G03G 1/508 ; G03G 1/509 ;
Abstract

A clearance regulating amount L by a clearance regulating member which is provided above a developing roller on a side closer to a photosensitive drum is determined at a size not greater than a height T of a developer at a magnetic pole just downstream of the clearance regulated position. Thus, the scattering of the developer from a developing unit is significantly reduced.


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