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. 12, 1993
Filed:
Dec. 11, 1990
Hiroyuki Katayama, Fujiidera, JP;
Hiroshi Suzuki, Nara, JP;
Masato Kawanishi, Habikino, JP;
Mitsuhiko Yoshikawa, Ikoma, JP;
Toshitaka Tamura, Kashihara, JP;
Takatoshi Mizoguchi, Gojo, JP;
Hiromi Nishino, Nara, JP;
Akiyoshi Fujii, Nara, JP;
Takayuki Taminaga, Yamatokoriyama, JP;
Katsuyasu Deguchi, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A thermal head for a thermal recording machine including an insulating substrate which is composed of a printed circuit board made of a heat resistant resin and covered with a copper film, a plurality of thermal resistors disposed on the insulating substrate in the direction corresponding to the scanning, discrete electrodes electrically connecting first ends of the thermal resistors to a control element, a common electrode electrically connecting the other ends of the thermal resistors together, a heat releasing layer formed of the copper film of the insulating substrate on the lower portions of the thermal resistors, and a thermal accumulating layer of a polyimide resin covering the heat releasing layer.