Method for compensating for tone value fluctuation in an inkjet printing machine

A method for compensating tone value fluctuation in inkjet printing includes generating multi-bit halftone images of pixels on a computer during prepress screening for color separations with multipletone values out of print image data, forwarding multi-bit halftone images to a control unit of an ink...

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Bibliographische Detailangaben
Hauptverfasser: KIRCHHOFF DIRK, STRITZEL BERND KARL, KAISER MICHAEL
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:A method for compensating tone value fluctuation in inkjet printing includes generating multi-bit halftone images of pixels on a computer during prepress screening for color separations with multipletone values out of print image data, forwarding multi-bit halftone images to a control unit of an inkjet printing machine, and printing the multi-bit halftone on the machine, wherein encoded binary values of multi-bit halftone images correspond to ink drop sizes to be generated by the machine. The computer introduces additional binary values of multi-bit halftone images not corresponding to ink drop sizes in pixel positions of multi-bit halftone images where occurring tone value fluctuations are to be compensated for by modified ink drop sizes, causing additional binary values to be ignored bythe machine in a regular print mode, and assigning additional binary values to modified ink drop sizes in a correction print mode. 种用于通过计算机补偿喷墨印刷机的喷墨印刷过程中出现的阶调值波动的方法,在计算机上在网目化过程期间在印刷过程的准备阶段中由印刷图像数据对于每个分色通过多个阶调值产生由像素构成的多比特网目图像