MULTILEVEL DENSITY COMPENSATION FOR DIGITAL PRINTING MACHINES

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United States of America Patent

APP PUB NO 20180257390A1
SERIAL NO

15897391

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method corrects color density unevenness during a printing operation on an inkjet printing machine having printing nozzles and a computer. The computer modifies the number or size of the drops to be applied to a printing substrate to attain nominal color density values after the processing of a rasterized print image. For different actual tone values, it is determined which target tone value is required to attain a nominal coloration by measuring a test image for every printing nozzle using a color measurement device, and, based thereon, an area coverage-dependent compensation profile is determined and saved on the computer to be applied in the printing operation to calculate the number and size of the drops on the computer.

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Patent Owner(s)

Patent OwnerAddress
HEIDELBERGER DRUCKMASCHINEN AG69115 HEIDELBERG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
JUNGHANS, GERD SCHWETZINGEN, DE 5 8
MAYER, MARTIN LADENBURG, DE 109 700
SCHOEMANN, ANDREAS HEIDELBERG, DE 1 2
SCHRANK, THOMAS OYTEN, DE 1 2
TRACHANAS, ILIAS PLANKSTADT, DE 8 26

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