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:
May. 28, 2002
Filed:
Dec. 15, 2000
Applicant:
Inventors:
Tuyoshi Sugihara, Tatuno, JP;
Toru Odagaki, Himeji, JP;
Koichi Takegoshi, Himeji, JP;
Masatoshi Shimonaka, Himeji, JP;
Assignee:
Ushiodenki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/520 ; H01K 1/50 ;
U.S. Cl.
CPC ...
G03G 1/520 ; H01K 1/50 ;
Abstract
A suitable operation temperature can be reached in a short period of time in a heat roller comprising a cylindrical metallic substrate and a heating lamp axially arranged inside said metallic substrate, the heating lamp comprising a bulb filled with a thermally conductive gas and having a filament installed therein, by using a gas whose thermal conductivity is 110×10 (W/m.K) or less at room temperature.