Thermal head having bent electrode structure and method of...

Details Thermal head having bent electrode structure and method of... Thermal head having bent electrode structure and method of...

2007-09-05

2008-09-23

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Thermal marking apparatus or processes

Specific resistance recording element type

Reexamination Certificate

active

07427998

ABSTRACT:
A thermal head having electrode wiring lines in a narrow wiring region, in which a line and a space are narrow, with good pattern accuracy and a method of manufacturing the same are provided. A thermal head includes: a plurality of heating resistors arranged in a line at predetermined pitches there between on a protruding level difference part of a glazed substrate; bent wiring lines each of which serves to electrically connect a pair of adjacent heating resistors to each other; a common wiring line and individual wiring lines used to cause the pair of adjacent heating resistors to be electrically conducted through each of the bent wiring lines; and bonding pads formed on one ends of the individual wiring lines. The common wiring line has a narrow wiring region located between the bonding pads arranged in a line and a wide wiring region wider than the narrow wiring region. The wide wiring region is formed using a conductor layer and a resistor layer made of the same material as the heating resistors, and the narrow wiring region is formed using only the conductor layer without the resistor layer.

REFERENCES:
patent: 2007/0229645 (2007-10-01), Yamamoto et al.
patent: 7-12696 (1995-02-01), None

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