DE695109C - Method of copying multicolor subtractive images - Google Patents

Description

Method of copying multicolor subtractive images It is at Copying of multicolor subtractive images onto multilayer photographic Material is known, with f.tichigen pictures one by filtering the copy light To bring about color balance. The color deviations to be improved are usually very large low, so that they are perceived as annoying by the eye, but only by one very slight overshoot of one or the other color. For this Basically, the dosage of the copy light with the help of filters is very difficult, since such thin filters can no longer be manufactured with sufficient accuracy. Above all, it is also difficult to create filters that you can continuously change can.

It has now been found that these disadvantages can be avoided if in copying multicolor subtractive images onto multilayered subtractive images photographic material to compensate for color defects the change of the copy light by reflecting the light on colored and non-colored surfaces.

One can proceed in such a way that one uses a white copier light allows all the light to shine on white surfaces and the reflected light to Copy used. If you then replace the white areas in whole or in part colored or neutral gray surfaces, this is how you achieve different tinted light Color and different gray content. If necessary, several different colors can also be used; c Use surfaces at the same time.

To change the white light into colored light continuously To be able to make, you can use areas made of white or neutral gray Fhichenteile and colored areas of increasing or decreasing size exist. So z. ß. a white surface for sale through wedge-shaped :) ige Ground surfaces or surfaces arranged like a grid on a white background. In general, however, these guidelines are not necessary, and it is more sufficient if there are colored, eecting surfaces on the walls of the htscliachtes of a photocopier attaches next to white or neutral gray surfaces. That reflected off the walls In most cases, light is sufficient to achieve the necessary structural compensation.

Veiterhin can also use rotatable eye gates with colored surfaces or borrowed devices, the coloring of the fit can be designed continuously.

The use of neutral gray instead of white areas has the advantage that you can choose neutral gray areas ixt that the reduction Intensity of the light through the colored before and through the neutral gray surface same is. With this arrangement, r is possible. these gray areas are continuous to replace colored ones without a change in the intensity of the light the exposure time does not need to be changed when cooking.

Claims (1)

PATEXT CLAIMS: i. Method of copying multicolor subtractive images on multi-layer photographic material, whereby by suitable choice of the copying light Color errors are compensated, characterized in that the change in the copy light takes place by reflection of the light on colored and non-colored surfaces. a. procedure for copying multicolor subtractive images onto multilayer photographic Material according to claim i, characterized in that the change in light is continuous is done with the help of one or more colored areas. Procedure for copying of multicolor subtractive images on multilayer photographic material according to claim i and?, characterized in that the light absorption of the reflective colored or non-colored areas are the same; so that when changing from colored and non-colored area ': a change in the exposure time is necessary.