Recorders – Thermal recording
Patent
1981-12-03
1983-12-27
Griffin, Donald A.
Recorders
Thermal recording
400120, G01D 1510
Patent
active
044234244
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.
REFERENCES:
patent: 3984844 (1976-10-01), Tanno et al.
patent: 4149171 (1979-04-01), Sato et al.
patent: 4322733 (1982-03-01), Moriguchi et al.
patent: 4360818 (1982-11-01), Moriguchi et al.
Catalogue entitled "Thermal Print Head KH107 Series", by Toyo Dengu Manufacturing Co., Ltd., Japan.
Griffin Donald A.
OKI Electric Industry Co., Ltd.
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