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:
Apr. 09, 2002
Filed:
Jan. 16, 2001
Applicant:
Inventor:
Takahiro Sasai, Kyoto, JP;
Assignee:
Murata Kikai Kabushiki Kaisha, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 1/514 ;
U.S. Cl.
CPC ...
G03G 1/514 ;
Abstract
A predetermined level of voltage is applied to a transfer roller ( ) to transfer a toner image on a photosensitive drum ( ). After a predetermined number of recording sheets are made, a cleaning sequence is started wherein a voltage of −900V is applied as a cleaning voltage. Before applying the transfer voltage of 3 kV, intermediate voltage is applied once or more under the control of a control unit ( ). The control unit ( ) instructs the application of the voltage through an electrical circuit ( ) to the transfer roller ( ) based on conditions set in a memory ( ) and/or information given by a machine temperature sensor ( ).