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:
Sep. 05, 1995
Filed:
Oct. 26, 1993
Tatsuya Itakura, Kawasaki, JP;
Rika Nishiwaki, Kawasaki, JP;
Tadayoshi Nakata, Kawasaki, JP;
Shigehiro Fujii, Hyogo, JP;
Tomoaki Fukuda, Hyogo, JP;
Naoyuki Fujimoto, Hyogo, JP;
Mitsuhiro Hirohata, Hyogo, JP;
Yoshizi Atsumi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A flash lamp fixing with a simple structure, capable of obtaining an even distribution of high-level luminous energy over a large area on the surface of a paper sheet illuminated by a flash lamp. In the flash lamp fixing device, the half breadth L.sub.1 of the aperture of the reflector is set so as to satisfy the equation V/T.gtoreq.L.sub.1 .gtoreq.V/T-L.sub.2 /2, where V is the conveying speed of a paper sheet; T is the flash cycle of the flash lamp; L.sub.1 is the half breadth of the aperture of the reflector; and L.sub.2 is the length of an area in which fixing can be done by one flash of the flash lamp. Where .theta..sub.1 represents the included angle between a tangent which passes through one of aperture edges, being tangent to the flash lamp on the side of the aperture and the plane of the aperture; and .theta..sub.2 represents the included angle between a tangent which passes through the aperture edge, being tangent to a safety distance critical circle centered on the center of the flash lamp and a plane normal to the aperture plane, the tilt angles of the respective inclined face parts in relation to the plane normal to the aperture plane are set to be not less than .theta..sub.1 and not more than .theta..sub.2.