Abstract: In a method/device for preparing a print data stream for generation of print images with at least two primary colors, the print data contained in an input print data stream are supplied to a processing stage as input print data. The input print data are processed with the processing stage wherein at least one raster image of a first primary color is generated. Trapping information is generated by use of the raster image. An output print data stream is generated that has the trapping information in addition to print data.

Abstract: In a method, program, or device to generate or process a document data stream that comprises data relating to color management resources wherein processing of color-related data of the document data stream can be controlled, associating at least one indexed color management resource with the document data stream wherein with the management resource color-related data of the document data stream can be associated with multiple predetermined color palettes. Within a color palette, an index value is respectively associated with multiple color. Respective values regarding the index colors are stored in the color management resource. The values are associated with corresponding proportions of color tones to reproduce the respective indexed color. The color palettes are compared between the system that generates the document data and an output system that outputs the document data, the document data stream is structured.

Abstract: In a method or computer program product for trapping of image data, the image data in an output image per image point is prepared as color separation data, and the image data is processed.

Abstract: In a method, program, or device to generate or process a document data stream that comprises data relating to color management resources wherein processing of color-related data of the document data stream can be controlled, associating at least one indexed color management resource with the document data stream wherein with the management resource color-related data of the document data stream can be associated with multiple predetermined color palettes. Within a color palette, an index value is respectively associated with multiple color. Respective values regarding the index colors are stored in the color management resource. The values are associated with corresponding proportions of color tones to reproduce the respective indexed color. The color palettes are compared between the system that generates the document data and an output system that outputs the document data, the document data stream is structured.

Abstract: In a method/device for preparing a print data stream for generation of print images with at least two primary colors, the print data contained in an input print data stream are supplied to a processing stage as input print data. The input print data are processed with the processing stage wherein at least one raster image of a first primary color is generated. Trapping information is generated by use of the raster image. An output print data stream is generated that has the trapping information in addition to print data.

Abstract: In a method and system for processing document data in a document processing system, document data are generated on a document generation computer. Document data are transmitted from the document generation computer to a document processing computer. Processed data are forwarded to a document output system. To optimize control of document output, in the processing computer control data are added to or removed from transmitted document data. A control buffer file for the added control data and a document buffer file for the document data are automatically formed and stored by a control device program running on the processing computer. The output system is monitored with the control data by a monitoring computer.

Abstract: In a method or computer program product for trapping of image data, the image data in an output image per image point is prepared as color separation data, and the image data is processed.

Abstract: In a method and printing system for mapping of color values of a color image to color values of a highlight color image with two highlight color colors, a mapping rule is developed such that a range in which a color value of the color image can be mapped to both highlight color colors is limited to a range between the two highlight color colors. Also, mapping rules for mapping of the color values to one of the two highlight color colors are designed such that they produce only a small portion of the highlight color color to be mapped in a neighborhood of the respective highlight color color that is not to be mapped. A color impression caused by highlight color colors of the color image is thus retained. Additionally a darkening of the color image via an application of too much toner of both highlight color colors is avoided.

Abstract: In a method and system for processing document data in a document processing system, document data are generated on a document generation computer. Document data are transmitted from the document generation computer to a document processing computer. Processed data are forwarded to a document output system. To optimize control of document output, in the processing computer control data are added to or removed from transmitted document data. A control buffer file for the added control data and a document buffer file for the document data are automatically formed and stored by a control device program running on the processing computer. The output system is monitored with the control data by a monitoring computer.