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:
Dec. 20, 1994
Filed:
Oct. 15, 1991
Toshiyuki Shirasaki, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A plurality of thermal heads are made from a rectangular material substrate board having one surface entirely formed with a conductor layer which has bulging portions extending along and adjacent to the four sides of the material substrate board. First, the conductor layer is etched in different regions of the substrate board so that each region is made to have a conductor pattern for a corresponding thermal head, wherein the conductor pattern at least in one region of the substrate board is made to have a common electrode provided by one bulging portion of the conductor layer. Then, the different regions of the substrate board are separated from each other to provide different thermal heads.