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. 03, 1976
Filed:
Jul. 01, 1974
Applicant:
Inventor:
Atsuyuki Tanaka, Sakai, JA;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
240 47 ; 240 / ; 355-1 ; 355 30 ; 355 67 ;
Abstract
An illumination device for use in a copying machine of a type wherein the optical system comprises an image transmitter formed by a bundle of optical fibers of graded refractive index. The illumination device comprises a halogen vapor lamp housed in position within a casing forming a reflector and a pair of ventilation fans arranged adjacent both ends of the casing for simultaneously blowing and exhausting air into and from the casing to cool the halogen vapor lamp within the casing. The ventilation fans are reversible in operation.