Photocopying – Projection printing and copying cameras – Distortion introducing or rectifying
Patent
1980-10-21
1982-09-21
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Distortion introducing or rectifying
355 77, G03B 2768
Patent
active
043504370
ABSTRACT:
An apparatus for producing images of various sizes on photosensitive film from either a photographic negative or positive which includes a photographic image having a predetermined size using a light source to expose the film to the image includes a first member having a stationary element and a movable element which includes a platform for supporting the photosensitive film in a fixed plane in positional relationship thereto, and a second member for retaining and positioning the photographic image in a fixed position with respect to the platform to expose a portion of the film to the light source to produce an image on the film having generally the same size as the photographic image. The movable element further includes a control arm attached to the platform and a resilient control linkage interconnecting the control arm and the stationary element to allow random movement of the platform in the plane relative to the photographic image. The control arm includes at least one control surface having a defined shape. A mechanism engages the control arm to move the platform and expose a greater portion of the film to the light source. A mechanism for adjustably controlling the movement of the platform to define its path of movement and to selectively determine the degree of movement in the defined path includes an adjustable control member for engaging the control surface. The control member is biased into engagement with the control surface to define the path of movement for the platform, and the control member is adjustable relative to the control surface to establish variable limits of movement of the control surface relative to the control member.
REFERENCES:
patent: 3449048 (1969-06-01), Allison
patent: 4105328 (1978-08-01), Wasson et al.
patent: 4268166 (1981-05-01), Byers
National Printing Plate Company, Inc.
Wintercorn Richard A.
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