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:
May. 16, 1989
Filed:
Nov. 18, 1987
Applicant:
Inventors:
Yasuhiro Yamamoto, Kiyose, JP;
Makoto Endo, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
353 25 ; 353 / ;
Abstract
An image projection apparatus detects whether or not a film sheet such as a microfiche is clamped between a pair of transparent members upon energization of the apparatus, performs index frame projection when the film sheet is clamped therebetween, and performs ejection when the film sheet is not clamped therebetween, thereby preventing damage to the film sheet and the jam state.