Illumination detecting and recording method and device therefor

Details Illumination detecting and recording method and device therefor Illumination detecting and recording method and device therefor

1976-01-27

1978-03-14

Adams, Russell E.

Photocopying

Contact printing

Light boxes

354 60R, 354105, 355 35, 355 38, 355 41, G03B 708

Patent

active

040793885

ABSTRACT:
Conventionally, color films must be used with the light source or illumination for which it was designed, such as for natural daylight, fluorescent-light or tungsten-light or, if used with another light source, a suitable conversion filter must be placed over the camera lens. However, an improvement in the emulsion of the film provide an improved type of film with which good printed images are available through a mere correction during printing of the film. The present invention provides a method and a device for detecting and recording the type of illumination through detection of their spectral properties and detection of existence of a flickering noise due to an alternating voltage of the commercial power supply, and a system for an automatic film development.

REFERENCES:
patent: 3475616 (1969-10-01), Stimson et al.
patent: 3500730 (1970-03-01), Matsubara et al.
patent: 3580149 (1971-05-01), Fujisawa
patent: 3672268 (1972-06-01), Scheibel et al.
patent: 3709601 (1973-01-01), Zahn et al.
patent: 3850530 (1974-11-01), Uno et al.

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