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. 17, 2001
Filed:
Oct. 09, 1998
Sadao Masubuchi, Chofu, JP;
Sigeru Futakami, Tokorozawa, JP;
Masaaki Matsunaga, Tokyo, JP;
Masafumi Yokoyama, Tokyo, JP;
Akira Shiota, Omiya, JP;
Shinichi Nonaka, Ageo, JP;
Maki Wakita, Sayama, JP;
Chikara Aizawa, Fujino-machi, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
The present invention employs LEDs and a liquid crystal shutter driven in synchronization with the position of the photosensitive paper, thereby eliminating image distortion even where the head of the optical printer apparatus is subjected to unanticipated load during scanning by the head. A rotary encoder (,) is provided on the rotating shaft of the motor (,) that drives the optical head (,), and the drive timing for the LEDs (,) and the liquid crystal shutter (,) is synchronized with the output of the rotary encoder.