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. 26, 2011
Filed:
Oct. 19, 2007
Hirokazu Yamauchi, Uji, JP;
Toshiki Takiguchi, Yamatokoriyama, JP;
Hiroyuki Murai, Yamatokoriyama, JP;
Kazuhiro Matsuyama, Ikoma, JP;
Masato Kuze, Yamatokoriyama, JP;
Hirokazu Yamauchi, Uji, JP;
Toshiki Takiguchi, Yamatokoriyama, JP;
Hiroyuki Murai, Yamatokoriyama, JP;
Kazuhiro Matsuyama, Ikoma, JP;
Masato Kuze, Yamatokoriyama, JP;
Sharp Kabushiki Kaisha, Osaka-Shi, JP;
Abstract
In an image forming apparatus, an electrostatic latent image formed on a surface of a photoreceptor is developed into a toner image. A printing paper transported on a transport belt is brought into contact with the surface of the photoreceptor and an electric field is applied to the printing paper from a rear surface of the transport belt by a transfer roller to transfer the toner image onto the printing paper. The transfer roller applies different levels of electric field to the printing paper, so that a predetermined transfer electric field is applied to a region other than a leading edge of the printing paper being transported. An electric field weaker than the predetermined transfer electric field is applied to the leading edge. Even in the presence of a projection generated when the printing paper is cut, the printing paper naturally strips off from the surface of the photoreceptor.