Thermal printing head

Details Thermal printing head Thermal printing head

1996-10-04

1998-04-28

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Specific resistance recording element type

B41J 2335

Patent

active

057451494

ABSTRACT:
A thermal printing head of a printing apparatus is provided. The thermal printing head includes an alumina substrate on which a plurality of heat resistors and signal supplying aluminum pattern elements are formed, a print circuit board for supplying an electric signal and power to the heat resistors, which is located adjacent to the alumina substrate, a heat sink for discharging heat, wherein the heat sink is attached to the bottom of the print circuit board and the alumina substrate; and a driving IC mounted on the alumina substrate, each signal supplying aluminum pattern element thereof being formed of two portions having different widths which are alternately connected in a lengthwise direction along the signal supplying aluminum pattern. This arrangement minimizes or prevents contamination of the wire bonding pad due to bleeding of solder resist and non-conductive epoxy along the signal supplying aluminum pattern element during manufacturing processes.

REFERENCES:
patent: 4506272 (1985-03-01), Arai
patent: 4595934 (1986-06-01), Arai et al.
patent: 4651164 (1987-03-01), Abe et al.
patent: 5003324 (1991-03-01), Yoshike et al.
patent: 5280301 (1994-01-01), Ota et al.
patent: 5285216 (1994-02-01), Ota et al.

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