Photocopying – Contact printing – Machine
Patent
1974-11-14
1976-07-06
Hix, L. T.
Photocopying
Contact printing
Machine
355 52, G03B 2710
Patent
active
039678989
ABSTRACT:
The optical distortion device which can make a contact copy of a photographic film image with one dimension of the copy lengthened or shortened while the perpendicular dimension is unchanged is comprised of a pair of cylindrical motor driven rollers, at least one of which can be driven at a variable speed. The axes of the rollers are disposed parallel to each other and to a narrow slit through which a beam of light is directed. A photographic image and a sheet of photosensitive material are disposed in superimposed relation with one edge of each secured to a respective roller so that upon rotation of the rollers the photographic image and the photosensitive sheet will be simultaneously moved over the light slit. By varying the speed of one motor so that its rate of rotation will be greater than, equal to or less than the rate of rotation of the other roller the dimension of the image in the direction of movement can be made greater than, equal to or less than the dimension of the original in the direction of movement.
REFERENCES:
patent: 2037764 (1936-04-01), Daneker
patent: 3401616 (1968-09-01), Cross
patent: 3427105 (1969-02-01), Ingalls
patent: 3445165 (1969-05-01), Dubbs
patent: 3687545 (1972-08-01), Moorhusen
Hix L. T,.
O'Connor E. M.
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