Incremental printing of symbolic information – Thermal marking apparatus or processes – Specific resistance recording element type
Patent
1993-07-06
1995-08-22
Tran, Huan H.
Incremental printing of symbolic information
Thermal marking apparatus or processes
Specific resistance recording element type
347202, 347204, 347205, B41J 2335, B41J 2345
Patent
active
054444756
ABSTRACT:
A thin-film thermal recording head, used in a facsimile machine or a thermal printer, including heat resistors formed from only a Cr--Si--SiO or Ta--Si--SiO alloy thin-film resistor layer and a chromium, molybdenum, nickel, or tungsten thin-film conductor layer. The heat resistor is formed on a substrate having a linear thermal expansion coefficient from room temperature to 300.degree. C. of 5.times.10.sup.-8 /.degree.C. or less. The heat resistor is also described having a thin anti- abrasion layer with thickness of 0.5 .mu.m or less. The thin-film thermal recording head is also described in monolithic form with a portion of the heat resistor formed to directly contact an output electrode of a drive LSI circuit. In this case, a double-layer thermal-insulation layer can be formed between the substrate and the portion of the heat resistor that contacts and heats heat-sensitive recording paper. The two layers of the thermal-insulation layer are formed from a heat-resistant resin and an inorganic insulator.
REFERENCES:
patent: 4680593 (1987-07-01), Takeno et al.
patent: 4868584 (1989-09-01), Nikaido et al.
Hitachi Koki Co,. Ltd.
Tran Huan H.
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