Device for generating a multicolor digital picture

A method for generating on a photosensitive material a multicolor picture composed of data of a digital image, whereby the material is driven by a transport system in a feeding direction, and pixels are generated on the material by an exposure head adapted for reciprocating above the material in a direction extending perpendicularly to the feeding direction, and having a plurality of outlet ends of light-conducting fibers, wherein the light of a first light source, the light of a second light source, and the light of a third light source is passed through one single light-conducting fiber, whereby the color of the light of the first light source, the color of the light of the second light source, and the color of the light of the third light source form a triplet of complementary basic colors.

A method for generating on a photosensitive material a multicolor picture composed of data of a digital image, whereby the material is driven in a feeding direction by a transport system, and pixels are generated on the material by an exposure head adapted for reciprocating above the material in a direction extending perpendicularly to the feeding direction, and having a plurality of outlet ends of light-conducting fibers, wherein in the course of a first movement of the exposure head, at least one first line of pixels is generated, and at least one second line of pixels is subsequently generated in the course of a second movement of the exposure head, whereby the first line and the second line overlap one another at least in part, and whereby prior to the generation of the second line, corrected picture data are computed for the second line by compensating for each pixel a changed exposure effect of the second exposure process following the first exposure process after a time interval, whereby such compensation takes place by changing the intensity and/or changing the pulse duration by a value proportional to the logarithm of the ratio between the time interval and a reference time interval (value˜log(time interval/reference time interval)).