Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1981-10-21
1984-01-03
Wityshyn, Michael G.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156242, 156247, 1562735, 1562755, 156277, 156289, 156344, 156498, 355132, 427 431, 430270, B32B 3106, B32B 3112, G03G 505
Patent
active
044240899
ABSTRACT:
Paste-consistency photopolymer is imaged onto printed wiring boards by coating the board overall and positioning the photographic film over the board in register and off-contact. A resilient blade is pressed against the phototool at one end of the board and drawn across the surface, thus facing the photographic film into intimate contact with the photopolymer and purging all air therebetween. Mounted on the resilient blade aft of leading edge is a shuttered tubular lamp which hardens the photopolymer where the photographic film is clear, so that in a single pass the photographic film is sequentially mated and photopolymer exposed, to produce line widths unmatched by competing dry film systems and at speeds of 0.5 feet per second.
REFERENCES:
patent: 3658620 (1972-04-01), Hall
patent: 3837887 (1974-09-01), Akamatsu et al.
patent: 3948657 (1976-04-01), Yoshikawa et al.
patent: 4070110 (1978-01-01), Ott
patent: 4087182 (1978-05-01), Alba et al.
Brown Laurence R.
Wityshyn Michael G.
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