Thermal head

Details Thermal head Thermal head

1986-12-15

1988-05-10

Leung, Philip H.

Recorders

Thermal recording

219216, 400120, G01D 1510

Patent

active

047439238

ABSTRACT:
A thin film type thermal head includes a head substrate member, a partial projected glaze portion mounted on the head substrate member, a plurality of heating resistor elements provided on the partial projected glaze portion with each of the heating resistor elements having a uniform thin thickness and two electrode end portions. A common electrode is provided on the partial projected glaze portion and an individual control electrode is also provided on the partial projected glaze portion. The partial projected glaze portion has at least two projected portions of different height with the plurality of heating resistor elements having a portion thereof disposed on at least the highest projected portion of the partial projected glaze portion with both electrode end portions of each of the heating resistor elements being disposed on the partial projected glaze portion other than the highest projected portion of the partial projected glaze portion so as to enable a recording dot to become narrow in the printing direction.

REFERENCES:
patent: 4203025 (1980-05-01), Nakatani et al.

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