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:
Mar. 21, 1989
Filed:
Jul. 15, 1987
Applicant:
Inventors:
Noboru Sawayama, Tokyo, JP;
Shinichi Kamiyama, Yokohama, JP;
Hideo Yuh, Tama, JP;
Masayuki Takashima, Yokohama, JP;
Tadayuki Sekiya, Ichikawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355-4 ; 355 / ; 355 / ;
Abstract
An image forming device having a mechanism for conducting variable magnification by moving plurality of mirrors and lenses, which includes, an optical system having six mirrors and a mechanism for moving the fourth mirror and the fifth mirror which are disposed behind the lenses.