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:
Oct. 19, 2004
Filed:
Oct. 25, 2002
Yoshikazu Kataoka, Kyoto, JP;
Eiichi Tamaki, Kyoto, JP;
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Abstract
An optical head of an image recording apparatus is provided with a light-source water-cooling jacket for cooling a light source and a device water-cooling jacket for cooling the Grating Light Valve and a light-shield water-cooling jacket . The optical head is also provided with a mirror for reflecting a light form the light source in a non-recording status and mirrors for reflecting non-signal light beams from the light valve , and the lights from these mirrors are directed to the light-shield water-cooling jacket . Further, a refrigerant from a chiller unit goes through the light-source water-cooling jacket , the device water-cooling jacket and the light-shield water-cooling jacket in this order. With this constitution, it is possible to efficiently cool all the heat sources and in the optical head.