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. 28, 2006
Filed:
Dec. 08, 2004
Douglas Campbell Hamilton, Lexington, KY (US);
Jerry Wayne Smith, Irvine, KY (US);
Larry Earl Stahlman, Versailles, KY (US);
Kiyoshi Mizushima, Matto, JP;
Hisakazu Hujimoto, Matto, JP;
Makoto Aoki, Kanazawa, JP;
Douglas Campbell Hamilton, Lexington, KY (US);
Jerry Wayne Smith, Irvine, KY (US);
Larry Earl Stahlman, Versailles, KY (US);
Kiyoshi Mizushima, Matto, JP;
Hisakazu Hujimoto, Matto, JP;
Makoto Aoki, Kanazawa, JP;
Lexmark International, Inc., Lexington, KY (US);
Abstract
A large area heater used, for example, in a laser printer belt fuser or as cooking surface, has an alumina substrate in which two bowed parts of alumina ceramic having opposed concave regions are formed together as a laminate. Electrical resistors are deposited on the laminate. The alumina laminate provides excellent resistance to uneven heating or other thermal stress. Alumina ceramic is readily shaped during manufacture and manufacturing costs and yield are good. A wide variety of large area heaters can usefully employ the laminate.