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:
Jul. 16, 2002
Filed:
Mar. 07, 2001
Yasuo Tanaka, Okazaki, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
An image forming apparatus includes four photosensitive drums provided in a line along the transport path of a recording sheet, four transfer rollers respectively provided in positions opposite to the photosensitive drums, via the transport path. When voltages are applied to the transfer rollers, each of them generates an electric field for transferring a toner image formed on the surface of the corresponding photosensitive drum onto the recording sheet. A constant voltage power supply, and a voltage distributing circuit by which an outputted voltage as it is from the constant voltage power supply is applied to one of the transfer rollers, while different voltages are applied to the remaining three transfer rollers by dividing the outputted voltage by means of three zener diodes.