Color standard method and apparatus

Details Color standard method and apparatus Color standard method and apparatus

1981-06-29

1982-12-28

Griffin, Donald A.

Photocopying

Contact printing

Light boxes

355 40, G03B 1724, G03B 2776

Patent

active

043658822

ABSTRACT:
A method for providing a reference color standard for analysis of exposed color film frames in which adjacent areas of film are exposed by subjecting them to a preselected color pattern by transmission of a repeatable light value from a known light source. All exposed areas of the film are developed identically to the adjacent film frames. Light and color comparisons can be made between the exposed film frames and their adjacent exposed color standard areas. The apparatus includes a repeatable light source, such as an electronic flash unit; a changeable filter pack; and light transport means for directing the light from the source, through the filter pack and to the film surfaces adjacent to an exposed film frame. The color standard area is exposed simultaneously with each film frame for later color comparison usage.

REFERENCES:
patent: 3029717 (1962-04-01), Hildebrandt
patent: 3718074 (1973-02-01), Davis
patent: 3836246 (1974-09-01), Bowker
patent: 3971049 (1976-07-01), Ohmori et al.
patent: 4055833 (1977-10-01), Rothfjell
patent: 4211558 (1980-07-01), Oguchi et al.
patent: 4227211 (1980-10-01), Disbrow

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