Cad aperture card laser plotters

Details Cad aperture card laser plotters Cad aperture card laser plotters

1991-01-31

1992-06-09

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

With developing

355 43, 355100, G03B 2752, G03B 2730

Patent

active

051211572

ABSTRACT:
In a CAD aperture card laser plotter operating with pre-exposed silver halide reversal film, an exposure device which exposes the entire frame is provided in addition to a laser exposure station. The background density of the reversal film can therefore be reduced so that finer lines can be portrayed than otherwise possible with a laser exposure station.

REFERENCES:
patent: 3535039 (1970-10-01), Lakin et al.
patent: 4634269 (1987-01-01), Welp et al.
patent: 4742374 (1988-05-01), Yamamoto et al.
patent: 5005043 (1991-04-01), Kobayashi et al.
Teicher, Gerhard: Handbuch der Fototechnik, Aug., 1963, VEB Fotokinoverlag Halle, p. 444.
Angerer, Ernst: Wissenschaftliche Photographie, Aug., 1956, Akademische Verlagsgesellschaft Geest & Portig KG, Leipzig, p. 42.
Ganzhorn, Karl: Optische Kopplung Mensch-Datenverarbeitungsanlage, Umschau, 1967, H2, pp. 42-46.

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