Plane color image scanning and reading method

Details Plane color image scanning and reading method Plane color image scanning and reading method

1985-06-07

1987-04-07

Evans, F. L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 75, H04N 1024, H04N 914

Patent

active

046565264

ABSTRACT:
In a method of scanning and reading out a plane color image, a first laser beam having a wavelength within the 460-520 nm bluish green wavelength region, where the spectral reflectances of the yellow and magenta components of the color image are approximately identical with each other, is superposed upon a second laser beam having a wavelength within the 550-800 nm red wavelength region and capable of detecting the cyan component of the color image. Or, a first laser beam having a wavelength within the 540-600 nm green wavelength region, where the spectral absorbances of the magenta and cyan components are approximately identical with each other, is superposed upon a second laser beam having a wavelength within the 400-500 nm blue wavelength region and capable of detecting the yellow component. The color image is scanned with the superposed laser beams to read out the color image.

REFERENCES:
patent: 3622690 (1971-11-01), Stephens et al.
patent: 4149183 (1979-04-01), Pellar et al.
patent: 4274109 (1981-06-01), Whitby
Meyerhofer et al., IEEE Transactions on Communication Technology, vol. COM-18, No. 4, Aug. 1970, pp. 361-366.
Gosch, Electronics, vol. 53, No. 11, May 8, 1980, pp. 77 and 78.

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