Thermal recording apparatus and print head

Details Thermal recording apparatus and print head Thermal recording apparatus and print head

1989-07-26

1991-11-05

Fuller, Benjamin R.

Recorders

Thermal recording

400120, B41J 2325, B41J 238, B41J 239

Patent

active

050633945

ABSTRACT:
In a thermal recording head, a glazed layer is formed on a substrate, a resistive layer is formed on the glazed layer. A common electrode is formed on the resistive layer and separate electrodes are formed on the resistive layer in such a manner that the end portion of the separate electrodes are closely arranged at the end portion of the common electrode with a gap therebetween and the separate electrodes are extended in parallel on the resistive layer. A wear-resistant layer is formed on the resistive layer and the common and separate electrodes exept the end portions of the common and separate electrodes. In a thermal recording head, the end portions of the common and separate electrodes are contacted to a current injection type ink ribbon in a current injection mode so that a current flows through the first current path in the resistance layer between the common and separate electrodes and a second current path in the ink ribbon between the common and separate electrodes.

REFERENCES:
patent: 4704616 (1987-11-01), Nakamura
patent: 4781113 (1988-11-01), Yamamoto et al.
patent: 4825040 (1989-04-01), Kato

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