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:
Feb. 21, 1989
Filed:
May. 06, 1987
Applicant:
Inventors:
Taku Saito, Hachioji, JP;
Yozo Fujii, Hachioji, JP;
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 55 ; 355-8 ; 355 / ; 355 67 ; 355 71 ;
Abstract
The present invention provides an optical correction device capable of correcting an exposure distribution so as to be flat at an image receiving surface such as a photoreceptor of copying machine, in spite of varying a projection magnification of original image on the image receiving surface. Additionally, the optical correction device can correct an exposure amount on the image receiving surface so as to be substantially same level throughout all available magnifications.