Analyzer apparatus for measuring and adjustment of color filteri

Details Analyzer apparatus for measuring and adjustment of color filteri Analyzer apparatus for measuring and adjustment of color filteri

1980-06-03

1982-09-28

Hix, L. T.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 45, 355 77, G03B 2772

Patent

active

043516076

ABSTRACT:
To control projection of intensity and spectral balance of color transparencies being projected on photographic paper for enlargement, a color analyzer (2) is provided which has an illuminating plane (12) formed as a screen or a groundglass, which receives a first central portion (11) the projected image from the enlarger, or at least a major portion thereof and on a surrounding framing portion (15; 31b) a reference light source, in which, prior to use with random transparencies to be printed, the relative intensities and color balances of the reference frame and the light from the enlarger have been adjusted by gray-scales, for white light, and if desired, color balance by filters (14, 34; 5; 6; 7) at a given diaphragm (D) setting of the enlarger; the same relative light intensity of frame and projected image on the imaging plane (12) is then reproduced on the subsequent transparencies, to be printed by varying the light emitted from the enlarger, for example, and preferably by changing the diaphragm setting of the enlarger to obtain the previously adjusted match on the imaging plane (12). The apparatus, preferably, is supported on a swing post (3) from the enlarger to be placed in, and out of the beam (1a) of light from the enlarger.

REFERENCES:
patent: 3443868 (1969-05-01), Mitchell
patent: 3690763 (1972-09-01), Mitchell

Affiliated with

Also associated with

Rating

Analyzer apparatus for measuring and adjustment of color filteri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Analyzer apparatus for measuring and adjustment of color filteri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analyzer apparatus for measuring and adjustment of color filteri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-397987