Ink key control in a printing press including lateral ink spread, ink saturation, and back-flow compensation

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United States of America Patent

PATENT NO 6318260
SERIAL NO

09368774

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Abstract

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A method is disclosed for determining ink key control settings for a plurality of ink keys in a printing press. Each of the ink keys controls the amount of ink supplied to a roller and then to a respective ink key zone on a substrate to print an image. A press model relates image requirements to ink key control settings. The press model includes a gain and a respective offset associated with each ink key. The offset represents the amount a value represented by the ink key control setting varies from the actual ink key opening. The drift in the respective offsets of the ink keys is tracked by comparing control settings predicted by the press model with final control settings after a press job has been satisfactorily completed.

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Patent Owner(s)

Patent OwnerAddress
QUAD/TECH INCN-64 W-23110 MAIN STREET SUSSEX WI 53089

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, Chia-Lin Brookfield, WI 8 262
Seymour, John C Jefferson, WI 29 625
Sharma, Amit Milwaukee, WI 147 1213

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