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. 27, 1983
Filed:
Dec. 03, 1981
Shoichiro Takayama, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
An improved thermal head having a continuous thermal line which is provided with the cells (r.sub.1, r.sub.2, r.sub.3, r.sub.4, et al.) on a substrate has been found. A first set of lead wires (A.sub.1, A.sub.2, et al.), a second set of lead wires (B.sub.1, B.sub.2, et al.), and a plurality of group recognition lines (S.sub.1, S.sub.2, et al.) are provided on the substrate, and those lines are coupled with the cells so that each cell is sandwiched between one of said lead lines and one of said group recognition lines. The first and second lead lines are mounted on the opposite sides of the thermal line from each other, and those lead lines provide printing data through respective transistor switches according to the picture signal to be printed. One of the group recognition lines (S.sub.1, S.sub.2, et al.) supplies the power voltage for energizing the cells, and other group recognition lines are supplied to the clamp voltage which is lower than the power voltage. The group recognition line which is supplying the power voltage is switched alternately among all the group recognition lines, and the present thermal head is energized with a plurality of phases.