Imaging system and method for printed circuit artwork and the li

Details Imaging system and method for printed circuit artwork and the li Imaging system and method for printed circuit artwork and the li

1979-05-24

1983-12-06

Cardillo, Jr., Raymond F.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

354 4, 358296, G01D 942, H04N 122, G03B 4100

Patent

active

044196750

ABSTRACT:
Imaging system and method suitable for producing artwork masters for use in the manufacture of printed circuit boards. A beam of coherent radiation is modulated in accordance with data from a source defining the image to be produced, and the modulated beam is scanned across an output medium to form the desired image. A reference signal is generated in accordance with the position of the beam on the output medium, and this signal is shifted forward in phase to compensate for any delay between the generation of the reference signal and the arrival of the modulated beam at the output medium.

REFERENCES:
patent: 3389403 (1968-06-01), Cottingham
patent: 3720785 (1973-03-01), Van Auken
patent: 3800084 (1974-03-01), Vrenko
patent: 3898627 (1975-08-01), Hooker et al.
patent: 3999010 (1976-12-01), Dosaka et al.
patent: 4002829 (1977-01-01), Hutchison
patent: 4046471 (1977-09-01), Branham et al.
Dowd et al., The Bell System Technical Journal, 11/70, pp. 2061-2067, 2069-2075, 2043-2059, 2033-2041.

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