Dry film development process for an aperture card printer

Details Dry film development process for an aperture card printer Dry film development process for an aperture card printer

1988-03-25

1989-06-20

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Methods

355 27, 355 30, 355100, 355106, G03B 2732

Patent

active

048413437

ABSTRACT:
Line broadening is eliminated in dry heat-developed films by using a development temperature which is higher than the manufacturer-recommended standard temperature, so that a much shorter development time can be used, and masking the edges of the film to prevent exposure thereof. The hot/short development cycle and the masking of the film edges substantially eliminate image smearing caused by emulsion shrinkage and migration.

REFERENCES:
patent: 3475760 (1969-10-01), Carlson
patent: 4009034 (1977-02-01), May
patent: 4116559 (1978-09-01), Morokuma et al.
patent: 4332466 (1982-01-01), Flasck
patent: 4653890 (1987-03-01), Nordstrom et al.
patent: 4697919 (1987-10-01), Hertel

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