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. 26, 1990
Filed:
May. 17, 1989
Applicant:
Inventors:
Yasutaka Maeda, Ikoma, JP;
Taisuke Kamimura, Nara, JP;
Osamu Fujimoto, Yamatokooriyama, JP;
Tsuyoshi Miyamoto, Osaka, JP;
Masato Tokishige, Yamatokooriyama, JP;
Kazuyuki Ohnishi, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 37 ; 355 70 ; 355326 ;
Abstract
A light source device for use in a color copying machine comprises a plurality of light source lamps having different efficiencies respectively and means for lighting any number of light source lamp or lamps among said plural light source lamps depending on the luminous energy of the respective blue, green and red spectrums and/or the spectral sensitivity of the photosensitive member for said respective spectrums.