Facsimile and static presentation processing – Natural color facsimile
Patent
1991-04-11
1993-08-31
Brinich, Stephen
Facsimile and static presentation processing
Natural color facsimile
358527, 358515, H04N 146
Patent
active
052413780
ABSTRACT:
A flatbed-scanning type image reading apparatus for reading an image of an original color film by separating the image into a plurality of color components, the apparatus including a transparent original table having a flat surface on which an original color film is to be placed; a linear light source for emitting the original color film placed on the table at least over a main scanning scope; an optical image reading unit for reading a light transmitted through the original color film as a plurality of color components of different wavelengths; a sub-scanning moving unit for relatively moving the linear light source and the table in a sub-scanning direction; an optical filter having spectral characteristics substantially inverse to spectral characteristics of a base of a negative color film; and a filter switching unit for moving the optical filter selectively to a first position on an optical path between the linear light source and the table and a second position off the optical path in accordance with the type of the original color film placed on the table.
REFERENCES:
patent: 4553835 (1985-11-01), Morgan, Jr.
patent: 4681427 (1987-07-01), Plummer
patent: 4797711 (1989-01-01), Sasada et al.
Brinich Stephen
Dainippon Screen Mfg. Co,. Ltd.
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