| Patent Number |
Title Of Patent |
Date Issued |
| 4668979 |
Production of color separations for single color printing in which separation hues and colors ar |
May 26, 1987 |
| In electronic reproduction technology, a method and apparatus for production of color separations from color originals for single color printing. The color original is opto-electronically scanned point-by-point and line-by-line for generating measured color values. Chrominance values |
| 4649423 |
Method and circuit arrangement for selective correction of hues and colors |
March 10, 1987 |
| A method and circuit arrangement for selective correction of hues and colors in the production of color separations for polychromatic mixed printing. A hue signal identifying the hues of the scanned colors as well as a color saturation signal and a luminance signal are derived from the |
| 4639770 |
Method and circuit arrangement for simulating a multi-colored reproduction on a color monitor |
January 27, 1987 |
| A method and apparatus for isochromatic simulation of a multi-colored reproduction on a color monitor. Before simulation, colors are generated on the color monitor and are matched to corner colors of a printed color chart or the like by measuring or visual comparison. The color values |
| 4631579 |
Method and apparatus for the production of color separations for single color printing |
December 23, 1986 |
| In electronic reproduction technology, a method and an apparatus for the production of hue and color separations for single color printing. A color original is optoelectronically scanned to obtain measured color value signals. A recognition region for a selected separation hue is defined |
| 4626903 |
Method for point-by-point and line-by-line exposing of color images using two correction stages |
December 2, 1986 |
| Apparatus and method for producing qualitatively high-grade color images of originals such as copy masters for multi-color or process printing by exposing chromatic material wherein the originals are scanned point-by-point and line-by-line and the color signals thus obtained are conv |
| 4623973 |
Method and apparatus for the recognition of hues and colors |
November 18, 1986 |
| In electronic reproduction technology, a recognition circuit for hues and colors in colored surfaces is provided. Before the actual hue recognition, the hue to be recognized is selected and its prescribed or measured color values of the RGB color space are transformed by a first color |
| 4585309 |
Run-free color raster for multi-color printing |
April 29, 1986 |
| In engraving of printing forms particularly of gravure cylinders, it has previously been possible to produce run-free color raster configurations for only two colors. The present invention discloses rastering methods for run-free color production of four color impressions and polychromat |
| 4551751 |
Color reduction dependent on tone |
November 5, 1985 |
| Given color reduction depending on tone in four-color printing, wherein the color components of the chromatic printing inks yellow, magenta and cyan are reduced and the amount of black printing ink is increased to compensate for such reduction, a achromatic synthesis is employed up to a |
| 4516175 |
Scanning method and scanning diaphragm for suppressing Moire in the scanning of rastered masters |
May 7, 1985 |
| A scanning method for already rastered masters in reproduction technology uses a special diaphragm for avoiding Moire effects in the re-recording. |
| 4482917 |
Method for a reproduction of colored masters in four-color printing using color reduction |
November 13, 1984 |
| A method for reproducing colored masters in four-color printing where a color reduction or removal (UCR) which differs between the gray area and the chromatic area of the master is utilized in the production of the color separations. In the gray area, a color reduction is done in which a |
| 4443060 |
Run-free color raster for multi-color printing |
April 17, 1984 |
| In engraving of printing forms particularly of gravure cylinders, it has previously been possible to produce run-free color raster configurations for only two colors. The present invention discloses rastering methods for run-free color production of four color impressions and polychromat |
| 4349279 |
Method for the color evaluation of pattern models of fabric, _decoration or packaging printing, |
September 14, 1982 |
| A method for the color evaluation of pattern models of fabric, decoration or packaging printing which, in particular, exhibit bleeding color areas, i.e. color areas of differing color saturation and/or brightness, and a color evaluation device with a color monitor is provided for carryin |
| 4307962 |
Determination of the standard color values of colors represented on a color monitor |
December 29, 1981 |
| The invention relates to a method of determining the standard color data of colors represented on a color monitor. Within a color represented on the color monitor there is fixed a measurement area in which the color measurement data are determined. From the color measurement data there a |
