Photocopying – Projection printing and copying cameras – Methods
Patent
1986-03-17
1987-10-27
Braun, Fred L.
Photocopying
Projection printing and copying cameras
Methods
355 3R, 355 67, G03G 1304
Patent
active
047025930
ABSTRACT:
A method for using a conventional electrostatic type copier to copy medical x-ray negative transparencies that involves the steps of providing a movable source of light external to the copier, a movable light diffuser locatable between the source of light and the copying surface of the copier and providing apparatus for adjusting the light illuminance at the copying surface of the copier. The method then involves the steps of locating the medical x-ray negative on the copying surface of the copier and illuminating the medical x-ray negative with light which passes through the movable light diffuser with the illuminance at the copying surface of the copier being between the predetermined limits of about 950 foot candles and about 1,425 foot candles while making a copy of the medical x-ray negative with the copier.
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Braun Fred L.
York Michael W.
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