Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1993-09-09
1994-11-29
Beck, Shrive
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427195, 427198, 427487, 427522, 427557, 427558, B05D 100
Patent
active
053688848
ABSTRACT:
The present invention has as its object providing a solder mask which permits high density mounting, is suitable for protecting conductor circuits, particularly has mask thickness on the circuit parts and each edge part of the circuits which make almost no difference from those on other parts, and is excellent in electrical insulation, heat resistance and solvent resistance.
This invention provides a method of forming a solder mask for printed circuit boards, using any powder paint which is curable by both irradiation of ultraviolet ray and heat, comprising:
REFERENCES:
patent: 4216246 (1980-08-01), Iwasaki
patent: 4469777 (1984-09-01), O'Neil
patent: 4567062 (1986-01-01), Fan
patent: 4894317 (1990-01-01), Maruyama et al.
Kashihara Akio
Seio Mamoru
Tanabe Hisaki
Yamagami Yoshikazu
Beck Shrive
Dang Vi Duong
Nippon Paint Co. Ltd.
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