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:
Aug. 29, 1989
Filed:
Dec. 16, 1986
Applicant:
Inventors:
Kazuo Kondo, Aichi, JP;
Tatsunori Kurachi, Aichi, JP;
Assignee:
NGB Spark Plug Co., Ltd., Aichi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
4271262 ; 29611 ; 29620 ; 427279 ; 427299 ; 427330 ; 4273762 ; 4273764 ; 4273765 ;
Abstract
A method of manufacturing a partially-glazed ceramic substrate for use in a thermal printing head. A ceramic substrate having a surface roughness of 0.2 .mu.m or less is provided. Subsequently, a glaze is applied to the ceramic substrate to form raised glaze regions having a transverse width of 1.0 mm or less and thickness of 100 .mu.m or less. The substrate and glaze are baked, and then a heating element is formed on the raised glaze regions.