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. 20, 2010
Filed:
Nov. 28, 2006
Hirokazu Yamauchi, Uji, JP;
Toshiki Takiguchi, Yamato-Koriyama, JP;
Kazuhiro Matsuyama, Ikoma, JP;
Hiroyuki Murai, Yamato-Koriyama, JP;
Hirokazu Yamauchi, Uji, JP;
Toshiki Takiguchi, Yamato-Koriyama, JP;
Kazuhiro Matsuyama, Ikoma, JP;
Hiroyuki Murai, Yamato-Koriyama, JP;
Sharp Kabushiki Kaisha, Osaka-shi, JP;
Abstract
An image forming apparatus and a maintenance method thereof are provided to enable rotation and replacement of a peeling claw at a suitable timing before the peeling claw is deformed or damaged. Several peeling members are disposed in a width direction of a drum-shaped photoreceptor. Each peeling member is disposed with a peeling claw and a collision sensor detecting that the peeling claw collides with a sheet. A collision history value of each peeling claw is stored and managed based on a collision detection signal from the collision sensor; if the peeling claw reaching a preset rotation request value exists in the read collision history values of the peeling claws, a rotation request of the relevant peeling claw is reported; the collision history value of the rotated peeling claw is rewritten; and if the peeling claw reaching the rotation request value does not exist, a print process is performed.