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:
Aug. 26, 2008
Filed:
Apr. 09, 2004
Susumu Murakami, Kyoto, JP;
Minoru Tomiyori, Kyoto, JP;
Hideshi Izumi, Nara, JP;
Takahisa Narikiyo, Nara, JP;
Kuniaki Nakano, Kyoto, JP;
Yoshie Iwakura, Osaka, JP;
Susumu Murakami, Kyoto, JP;
Minoru Tomiyori, Kyoto, JP;
Hideshi Izumi, Nara, JP;
Takahisa Narikiyo, Nara, JP;
Kuniaki Nakano, Kyoto, JP;
Yoshie Iwakura, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A discharge unit is disposed downstream of a principal transport path of a compound machine, and a shifter function is provided in this discharge unit. By shifting the paper passage position relative to a photosensitive drum when printing the front side and the paper passage position relative to the photosensitive drum when printing the back side, the region in which the surface electric potential of the photosensitive drum increases is diminished, and the region in which photographic fog is generated is made smaller. Thus, when printing the second and subsequent sheets, even when a slight amount of displacement of the transport position of the recording paper occurs, it is possible to suppress that recording paper making contact in the photographic fog region on the photosensitive drum, and defective printing can be prevented.