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:
Sep. 10, 2002
Filed:
Jul. 09, 2001
Toshiaki Motohashi, Saitama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A transfer device according to the present invention have a current detector for detecting a value of an upstream current flowing from an intermediate transfer belt into a tension roller, a transfer bias power source for performing control in such a manner as to prevent any further increase in output voltage value even if an output current value becomes lower than a value which should be subjected to a constant-current control in the case where an output signal from the current detector is a signal indicating 3.2 &mgr;A. Consequently, it is possible to suppress the unclearness of the edge of a transfer image caused by the upstream current flowing in a visible image carrying belt upstream of a transfer position such as a nip.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile