Incremental printing of symbolic information – Thermal marking apparatus or processes – Specific resistance recording element type
Patent
1999-08-04
2000-05-09
Tran, Huan
Incremental printing of symbolic information
Thermal marking apparatus or processes
Specific resistance recording element type
B41J 2335
Patent
active
060610778
ABSTRACT:
There is provided a thermal head having protective layers comprising a lower protective layer, an intermediate layer and a carbon-based protective layer which is composed of a plurality of sub-layers, wherein the carbon-based protective layer has stress values that become sequentially higher from one of the sub-layers located undermost toward another of the sub-layers located uppermost. The protective layers have significantly reduced corrosion and wear and is protected from cracking and peeling, whereupon the thermal head obtained can have sufficient durability and reliability to ensure that thermal recording of high-quality images is consistently performed over an extended period of operation.
Kashiwaya Makoto
Nakata Junji
Fuji Photo Film Co. , Ltd.
Tran Huan
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