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US 6,801,715 B1Granted
Reusable camera for use with pre-exposed and conventional film
OwnerRobert Lee Craiiginventor
Life of this patent
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OwnerRobert Lee Craiiginventor
Estimating the term…
A photographic film strip in the form of a length of photographic film has a pre-exposed area and an unexposed area. The pre-exposed area is continuous and extends along one edge of the strip between ends of the strip. The unexposed area is also continuous and has a length suitable for making multiple single exposure frames with adjacent frames being separated by a frame line. Upon development the film, an image formed by the pre-exposed section of each print will extend between opposite edges of prints formed by individual frames without the need to preregister the film in a camera The pre-exposure comprises a contact exposure. A strip of film can be placed in contact with a partially pre-exposed master on a cylindrical drum in a light tight housing so that pre-exposed section of the film can be exposed by one activation of an electronic flash located in the center of the drum.
A camera in which a film cannister with a film strip can be loaded and exposed through a film frame aperture located behind a lens, the camera including a shiftable partition located adjacent one edge of the film frame aperture, the shiftable partition being movable between a first and a second position within the camera such that when the shiftable partition is in the first position, the film frame aperture is completely open and when the shiftable partition is in the second position, a portion of the film frame aperture along the one edge is blocked to prevent exposure of film behind the shiftable partition, with the remainder of the film frame aperture remaining open, so that the camera can be used with an unexposed film strip when the shiftable partition is in the first position and the camera can be used with a partially pre-exposed film strip when the shiftable partition is in the second position.
An assembly including a re-usable camera and a film canister loaded in the camera so that a film strip in the film cannier can be exposed through a film frame aperture located behind a lens, the camera including a partition positionable adjacent one edge of the film frame aperture, the partition being displacable within the camera relative to the frame aperture, the film strip including a pre-exposed first section and an unexposed second section, the film strip being positioned so that the partition, when positioned adjacent one edge of the film aperture, covers the pre-exposed first section as portions of the film strip move sequentially through the film frame aperture, with the remainder of the film frame aperture remaining open.
A reusable camera for use with either film canisters containing film with pre-exposed images along a film section or for use with film canisters containing film without pre-exposed images on the film, the reusable camera comprising:
Dependencies are inferred from the claim text.