Photocopying – Projection printing and copying cameras – Original moves continuously
Patent
1976-04-23
1977-08-23
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Original moves continuously
355 64, G03B 2748, G03B 2750, G03B 2732, G03B 2752
Patent
active
040436616
ABSTRACT:
An enlarger-printer wherein aperture cards, each mounting a microfilm, are fed one after another from a card hopper, moved in the direction in which the major sides of the cards are oriented and scanned in the direction in which the minor sides of the cards are oriented, so that imagewise exposing of a photosensitive member can be effected for each card to form an enlarged latent image of the film of each card on the photosensitive member, which latent image is then converted into a visible image. Before each card is scanned, the card is moved upwardly a distance corresponding to the margin between the image and the upper edge of the film to reduce the time required for effecting scanning. Switching between lenses of different magnifications, exposing slits of different widths and scanning speeds consistent with desired magnifications of the image can be effected simultaneously by simply actuating a lever. A mark reader may be provided so that these switching operations can be performed automatically prior to effecting exposure by reading a mark on each aperture card. The aperture cards are stacked, after being passed through various steps, in a position which is higher than the optical system of the lenses. The used cards are stacked in the same order and face the same direction as when they were held in the card hopper. Each of the reflectors for reflecting the light emanating from a light source can be withdrawn from the main body of the enlarger-printer lengthwise thereof, and does not require adjustments of its position when inserted in the enlarger-printer again, so that damage to the surface of each reflector, which might otherwise be caused in inserting and with drawing, it can be avoided.
REFERENCES:
patent: 2741960 (1956-04-01), Oldenboom
patent: 3094036 (1963-06-01), Benson
patent: 3267797 (1966-08-01), Fowlie et al.
patent: 3597076 (1971-08-01), Hubbard et al.
patent: 3802773 (1974-04-01), Schneider
patent: 3947118 (1976-03-01), Amort
patent: 3988064 (1976-10-01), Sone et al.
Fukuda Minolu
Shirai Yukio
Yamada Hiroshi
Ricoh Co. Ltd.
Wintercorn Richard A.
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