Document reproduction device utilizing a selective color illumin

Details Document reproduction device utilizing a selective color illumin Document reproduction device utilizing a selective color illumin

1983-07-15

1985-05-28

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Illumination systems or details

355 37, 355 70, 355 71, G03B 2772

Patent

active

045197032

ABSTRACT:
A selective color copyability illuminator includes a pair of lamps having complementary spectral emission. The ratio of the lamp outputs are adjustable to enhance a first color of an original to be copied while suppressing the second color. The power input to the lamps is also continually adjustable to maintain a desired exposure level at an imaging plane. In a preferred embodiment, a dichroic reflector is utilized with each lamp to enhance system efficiency.

REFERENCES:
patent: 3825335 (1974-07-01), Reynolds
patent: 3841752 (1974-10-01), Terajima et al.
patent: 3950093 (1976-04-01), Schneider
patent: 4124292 (1978-11-01), Van Wandelen

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