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:
Jan. 28, 2003
Filed:
Jan. 04, 2001
Applicant:
Inventor:
Mugijiroh Uno, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/502 ; G03G 2/100 ;
U.S. Cl.
CPC ...
G03G 1/502 ; G03G 2/100 ;
Abstract
A method for cleaning a charging brush which charges a drum including an electroconductive substrate and an insulating surface layer over the electroconductive substrate, including the steps of grounding the electroconductive substrate of the drum contacting a brush portion of the charging brush with the insulating surface of the drum while the charging brush and the drum are rotated and applying an alternating electric field to the brush portion of the charging brush to vibrate to brush portion to remove fouling adhered to the brush portion.