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:
Sep. 30, 2003
Filed:
Feb. 14, 2001
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An optical printer has a DMD as a spatial light modulator. An optical image corresponding to a fraction of a picture frame is projected from the DMD onto a photographic paper at a predetermined time interval. The photographic paper is advanced intermittently by a length corresponding to an exposure area for one optical image. A fluctuation value from a set advanced length for one advancing step is detected at each advancing step and accumulated. The DMD is mounted on a swinging plate whose angle is controllable by a piezoelectric element, to shift the exposure position on the photographic paper. In accordance with an accumulated fluctuation value, drive voltage to the piezoelectric element is changed from a reference value to correct the exposure position so as to print the picture frame without any gap or overlap between the fractions.