Electric circuit board having protective part against light beam

Details Electric circuit board having protective part against light beam Electric circuit board having protective part against light beam

1998-02-05

2000-01-11

Pelham, Joseph

Electric heating

Heating devices

Combined with diverse-type art device

219 8512, 21912163, 347209, 361760, B23K 300, B41J 2335, H05K 702, H05K 720, B73K 2618

Patent

active

060138971

ABSTRACT:
An electric circuit board has a plurality of conductive pads on a base plate for connection with conductive pins of an electric device such as a thermal head of a facsimile machine. Protective parts are formed on the base plate at the right side of the rightmost conductive pad and at the left side of the leftmost conductive pad. The conductive pads and the conductive pins are soldered by solders heated and melted by a light beam. The protective parts protect the base plate from being burnt by the light beam even when the light beam is projected transversely across the pads from the right side of the rightmost pad to the left side of the leftmost pad.

REFERENCES:
patent: 4733254 (1988-03-01), Yukihiro et al.
patent: 5021630 (1991-06-01), Benko et al.
patent: 5175410 (1992-12-01), Freedman et al.
patent: 5220353 (1993-06-01), Ota et al.
patent: 5274210 (1993-12-01), Freedman et al.
patent: 5280301 (1994-01-01), Ota et al.
patent: 5298715 (1994-03-01), Chalco et al.

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