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US 4,229,098 AGranted
Photographic enlarger for producing giant-size prints
AssigneeFotomec S.p.A.
InventorPeter Schmoker
Life of this patent
Estimating the term…
Abstract
A photographic enlargement system of the kind used in producing posters or giant-size prints has been improved by installing the focal plane, the photographic-paper feeding mechanism and a focal-plane-masking roller blind system on a carriage which can be moved toward or away of the optical enlarging system for focussing the image. The carriage forms a compact and self-contained unit which is enclosed in a light-tight fixed casing with which the optical enlarging system is integral. Convenience and reliability of use are the distinguishing features.
Claims7
A photographic enlarger for producing large-size prints comprising:
- walls forming an enclosure;
- an enlargement optical system including an objective lens for projecting light rays in a vertical direction within the enclosure;
- a mirror within the enclosure for deflecting the vertical light rays to a horizontal direction on to a vertical exposure plane within the enclosure;
- a light-tight box within the enclosure, said box supporting takeup and delivery rollers for photographic paper and a driving mechanism therefor and said box supporting a shutter device for masking the exposure plane and for delimiting the copy size, and said box being arranged so that photographic paper extending between the rollers lies in the vertical exposure plane of the optical system;
- and mounting means for adjusting the position of the box horizontally toward and away from the mirror.
2 more elements
Dependencies are inferred from the claim text.