Thermal printhead

Details Thermal printhead Thermal printhead

2011-06-28

2011-06-28

Tran, Huan H (Department: 2861)

Incremental printing of symbolic information

Thermal marking apparatus or processes

Specific resistance recording element type

Reexamination Certificate

active

07969458

ABSTRACT:
A thermal printhead (A1) includes a substrate (1) and a heating resistor (3) supported by the substrate (1). An electrode pattern (2) is formed in contact with the heating resistor (3) for applying driving voltage. The heating resistor (3) is covered with a protective film (5). The protective film (5) includes a high thermal conductivity layer (51) and a low thermal conductivity layer (52) laminated on the high thermal conductivity layer. The low thermal conductivity layer (52) is positioned farther from the heating resistor (3) than the high thermal conductivity layer (51) is.

REFERENCES:
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patent: 6441840 (2002-08-01), Sato et al.
patent: 62-62775 (1987-03-01), None
patent: 1-244870 (1989-09-01), None
patent: 2002-2005 (2002-01-01), None
patent: 2006-1017 (2006-01-01), None

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