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:
Nov. 30, 1993
Filed:
Aug. 14, 1991
Applicant:
Inventor:
Shigeru Sasada, Kyoto, JP;
Assignee:
Dainippon Screen Mfg., Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358481 ; 358480 ; 358474 ; 358471 ; 250236 ; 346108 ; 346160 ;
Abstract
An image scanning and recording method for compensating for a pyramidal error of a mirror surface of a rotating body having at least two reflective mirror surfaces by fine-adjusting an angle of a light beam incident on the rotating body. A scanning lens is put in such a manner that an optical axis of the scanning lens is orthogonal to a rotating axis of the rotating body. An angle made of the incident light beam and a main scanning plate is controlled so that equations (I) and (II) are selectively fulfilled, the main scanning plane being orthogonal to the rotating axis and including the optical axis: