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:
Dec. 12, 2006
Filed:
Jan. 06, 2003
Shigeyuki Hayashi, Gifu-ken, JP;
Masatoshi Kokubo, Aichi-ken, JP;
Shigeyuki Hayashi, Gifu-ken, JP;
Masatoshi Kokubo, Aichi-ken, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
An image forming device that is capable of performing transfer of paper constantly in a highly accurate manner, irrespective of types or conditions of paper. The image forming device is provided with a motion sensor in a paper transfer path thereof for detecting the surface condition of an idle roller moving in accordance with the paper, and transfer of the paper is controlled on the basis of surface condition signals generated by the motion sensor. The motion sensor makes laser light, which is irradiated by a semiconductor laser, hit on an outer peripheral surface of the idle roller that rotates accompanying the transfer of paper and the reflected light is received by a two-dimensional semiconductor image sensor. Then, the surface condition signals are detected on the basis of speckle patterns generated in the reflected light.