Color image reader

Details Color image reader Color image reader

1997-01-03

1999-07-06

Coles, Edward L.

Facsimile and static presentation processing

Natural color facsimile

Scanning

358509, 358471, 358516, 362226, H04N 146, H04N 140, H01R 3300

Patent

active

059204087

ABSTRACT:
A compact color image reader for scanning an image in a short time is disclosed. The color image reader includes three fluorescent lamps 17 of red, green, and blue, a lighting circuit 15 for lighting the three fluorescent lamps sequentially, a CCD 183 for reading an image illuminated by the three fluorescent lamps and a control circuit 16 for controlling a lighting period of each of the fluorescent lamps 17 and the reading of the CCD. In order to perform the scanning of a color image in a short time, the lighting circuit 15 lights each of the three fluorescent lamps at a lamp current higher than a rated value and the CCD performs the fast reading in a period corresponding to the lighting period.

REFERENCES:
patent: 4642679 (1987-02-01), Nagano
patent: 4670779 (1987-06-01), Nagano
patent: 4731661 (1988-03-01), Nagano
patent: 5450215 (1995-09-01), Iwama

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