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:
May. 21, 2002
Filed:
Jul. 17, 2000
Applicant:
Inventors:
Hirofumi Nakayasu, Kawasaki, JP;
Susumu Imado, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 1/514 ;
U.S. Cl.
CPC ...
G03G 1/514 ;
Abstract
An image-forming device such as a full color printer is provided which is designed to correct the speed of an image carrier such as a sheet conveyer belt for compensating for a shift between colors. The image-forming device forms electrostatic marks on the image carrier at regular intervals and detects the marks using a sensor(s) to determine a change in speed of the image carrier based on sensor signals.