Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making electrical device
Patent
1979-05-10
1981-04-07
Kimlin, Edward C.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making electrical device
355 78, 355132, 430 5, 430325, 430327, 430396, 430494, G03C 500, G03C 506, G03C 504
Patent
active
042606756
ABSTRACT:
Paste-consistency photopolymer is imaged onto printed wiring boards by use of glass exposure plate having opaque image areas which contact portions of the board on which photopolymer is not to be exposed, and having clear areas elevated above the photopolymer surface. A printed wiring board is coated with UV-curable solder mask photopolymer and exposed to a strong UV lamp through the glass plate pressed against the printed wiring board by atmospheric pressure. As the glass plate does not contact the photopolymer, trapped air can escape and the gloss surface of the photopolymer is preserved. A non-collimated light source is used to produce high resolution photopolymer coatings at line speeds of 12 feet per minute. Where opaque and raised images contact printed wiring board, photopolymer there between is extruded sideward to form beneficial areas of increased photopolymer thickness. In addition to solder mask imaging, graphics of several colors can be produced.
REFERENCES:
patent: 3615468 (1971-10-01), Tiala
patent: 3622319 (1971-11-01), Sharp
patent: 3669770 (1972-06-01), Feldstein
patent: 3712816 (1975-01-01), Blome et al.
patent: 3720143 (1973-03-01), Hashimoto et al.
patent: 3824104 (1974-07-01), Kloczewski et al.
patent: 3897251 (1973-09-01), Detrick et al.
patent: 3936301 (1976-02-01), Schneider
patent: 3942981 (1976-03-01), Sato
patent: 3965277 (1976-06-01), Guditz et al.
patent: 3986876 (1976-10-01), Abita
patent: 4102683 (1978-07-01), Di Piazza
patent: 4113486 (1978-09-01), Sato
patent: 4166148 (1979-08-01), Sakurai
Rothman et al., IBM Tech. Disclosure Bulletin, vol. 14, No. 3, 1971.
Brown Laurence R.
Kimlin Edward C.
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