Thermal head

Details Thermal head Thermal head

2005-09-27

2005-09-27

Meier, Stephen D. (Department: 2853)

Incremental printing of symbolic information

Thermal marking apparatus or processes

Specific resistance recording element type

C347S064000

Reexamination Certificate

active

06950117

ABSTRACT:
A thermal head includes a heat insulating layer made up of an electrically-conductive multiple low oxide ceramic layer of low thermal conductivity made of a chemical compound of Si, plural transition metals and oxygen. A first insulating layer made up of an insulated multiple high nitride ceramic layer of low thermal conductivity made of a chemical compound of at least Si, plural transition metals and nitrogen is formed on the heat insulating layer, and a second insulating layer made up of an SiO2layer of high insulation characteristics or an Al2O3layer is formed on the first insulating layer.

REFERENCES:
patent: 4203025 (1980-05-01), Nakatani et al.
patent: 5156896 (1992-10-01), Katoh et al.
patent: 5444475 (1995-08-01), Mitani
patent: 5473357 (1995-12-01), Shirakawa et al.
patent: 5661513 (1997-08-01), Shirakawa et al.

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