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:
Jun. 11, 1985
Filed:
Sep. 30, 1982
Applicant:
Inventors:
Osamu Kamiya, Yokohama, JP;
Nobuyuki Sekimura, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 11 ; 350642 ; 355 66 ; 355 71 ;
Abstract
A copying machine has at least one metal surface of high reflectance provided with a dielectric multilayer film vapor deposited thereon. The dielectric film has a wavelength selectivity and serves to match the wavelength characteristics of the light source used in the copying machine to the sensitivity characteristics of the photosensitive medium used in the same copying machine. Thus, in the copying machine, the spectral sensitivity characteristics get adjusted to the optimum by the particular effect of the metal reflective surface or by a synergistic effect of two or more such reflective metal surface.