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. 17, 1976
Filed:
Nov. 29, 1973
Applicant:
Inventors:
Hiroshi Otani, Shijonawate, JA;
Fujio Oda, Ashiya, JA;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219216 ; 2957 / ; 357 28 ; 357 56 ;
Abstract
A thermal record printer head to be used in a thermal record printer, in which a resistive exothermic layer is formed in the front surface of a semiconductor substrate to be adjacent to a thermosensitive record medium and low resistance regions in parts of the back surface to be continuous to the one in the front surface by impurity diffusion, and respective electrodes are attached to the impurity diffusion regions in the back surface thereby enabling high temperature heating, a high thermal response speed and also good productivity, and a method of making the same.