B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
101/72
B41F 15/10 (2006.01) B01F 13/10 (2006.01) B41F 31/00 (2006.01) B41F 33/00 (2006.01)
Patent
CA 1159709
Abstract of the Disclosure In the process of preparing an ink blend matching a color sample, particularly an ink for multicolor printing, the solvent content and the extender content of the blended ink are adjusted to predetermined, desired values. In order to permit the printer to automatically prepare for each ink duct of the printing units an ink having the correct hue, the correct saturation and the correct color strength in accordance with the color samples, the process is carried out in such a manner that desired values for the hue, the color strength and the saturation of the color blend are determined in accordance with the color sample, the luminance factors of the color sample are ascertained by densitometric measurements using blue, green and red filters, the concentrate is prepared from ink con- centrates corresponding to a number of predetermined primary colors in accordance with the hue values which result from the measured density values, the extender is admixed in the quantity required to obtain the desired color strength, and black is admixed to obtain the desired saturation.
371665
Marks & Clerk
Windmoller & Holscher
LandOfFree
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