Thermal printhead, substrate for the same and method for making

Details Thermal printhead, substrate for the same and method for making Thermal printhead, substrate for the same and method for making

1997-10-30

1999-08-17

Tran, Huan

Incremental printing of symbolic information

Thermal marking apparatus or processes

Specific resistance recording element type

347202, B41J 2335

Patent

active

059401095

ABSTRACT:
A thermal printhead according to the present invention includes a substrate (2) of an insulating material having a substantially flat surface, a heating resistor (3) formed on the substrate (2) to form a plurality of heating dots, a conductor pattern (5, 6) formed on the substrate for electrical connection to the heating resistor (3), and driving elements mounted on the substrate (2) for selectively heating the heating dots via the conductor pattern (5, 6). The substrate (2) has, in its wall thickness, a hollow portion (10) extending along the heating resistor (3). The present invention also provides a method for making the substrate (2).

REFERENCES:
patent: 4742362 (1988-05-01), Takoshima et al.
patent: 5285216 (1994-02-01), Ota et al.
patent: 5357271 (1994-10-01), Wiklof et al.

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