Thermal head

Details Thermal head Thermal head

1998-07-17

2000-10-24

Tran, Huan

Incremental printing of symbolic information

Thermal marking apparatus or processes

Specific resistance recording element type

B41J 2335

Patent

active

061375209

ABSTRACT:
The improved thermal head has a protective film of a heater formed on the heater, the protective film comprising a ceramic-based lower protective layer composed of at least one sub-layer, an intermediate protective layer also composed of at least one sub-layer and formed on the lower protective layer, and a carbon-based upper protective layer formed on the intermediate protective layer. The thermal head of the invention has a protective film which has significantly reduced corrosion and wear, which is advantageously protected from cracking and peeling due to heat and mechanical impact and which allows the thermal head to have a sufficient durability to ensure that the thermal recording of high-quality images is consistently performed over an extended period of operation.

REFERENCES:
Patent Abstract of JP 06036210, dated Feb. 10, 1994.
Patent Abstract of JP 63197665, dated Aug. 16, 1988.
Patent Abstract of JP 10034989, dated Feb. 10, 1998.
Patent Abstract of JP 07132628, dated May 23, 1995.
Patent Abstract of JP 62095245, dated May 1, 1987.

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