Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1978-03-10
1980-08-05
Tupper, Robert S.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 78, 358285, G03F 308, H04N 146, H04N 104
Patent
active
042164958
ABSTRACT:
Four color separations are produced from a single full-color photographic transparency. The transparency is mounted on the transparent curved surface of a rotatable cylinder and light is directed axially into the cylinder and out through the transparency to a photomultiplier. The illumination of the transparency is provided by red, blue and green light in time sequence, and the itensity from each color is stored separately while the transparency is being scanned and used to produce the separations contemporaneously on photosensitive paper on a second cylinder. The transparency is scanned axially of the first cylinder, which is rotated. The relative speed of rotation of the cylinders is used as a control of the magnification of the reproduced separations. A further photomultiplier is used to provide unsharp masking, and color correction is applied between the color intensities detected by the photomultiplier.
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Neilson Peter J.
Pickering William J.
Eltra Corporation
Psitos Aristotelis M.
Rosenblatt Joel I.
Tupper Robert S.
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