Improved colour quality printing using marking particles with specific hue-angles

Improved colour quality printing using marking particles with specific hue-angles

An apparatus and a method for making a digital colour proof of an image on a surface of a receiving substrate, the apparatus including a plurality of application stations for imagewise applying each a specific type of marking particles to the surface of the receiving substrate, the application stati...

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Hauptverfasser: VAN HOOF, DIRK, MAHY, MARC
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CORRECTION OF TYPOGRAPHICAL ERRORS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PICTORIAL COMMUNICATION, e.g. TELEVISION
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
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creator VAN HOOF, DIRK
MAHY, MARC
description An apparatus and a method for making a digital colour proof of an image on a surface of a receiving substrate, the apparatus including a plurality of application stations for imagewise applying each a specific type of marking particles to the surface of the receiving substrate, the application stations including a first application station for applying marking particles of a first type having (L*1, a*1, b*1) colour values in CIE L*a*b* space with a hue-angle hab,1 = atan2(a*1,b*1) and a second application station for applying marking particles of a second type having (L*2, a*2, b*2) colour values in CIE L*a*b* space with a hue-angle hab,2 = atan2(a*2,b*2), wherein the hue-angles satisfy the inequality ¾hab,2 - hab,1 + k*360 DEG ¾ < 15 DEG for a number k selected from the group of -1, 0 and +1.
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subjects CORRECTION OF TYPOGRAPHICAL ERRORS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PICTORIAL COMMUNICATION, e.g. TELEVISION
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
title Improved colour quality printing using marking particles with specific hue-angles
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