Patent ID: 6912065

Claim:
An apparatus for making a digital colour proof of an image on a surface of a receiving substrate, the apparatus comprising a plurality of application stations, each of said application stations being for imagewise applying one specific type of marking particles to said surface of said receiving substrate, said application stations including a first number N 1 of first application stations for applying marking particles of a first, dominant colour and a second number N 2 of one or more second application stations for applying marking particles of a second, non-dominant colour, wherein said first number N 1 is larger than said second number N 2 , one of said application stations used for applying marking particles having (L* 1 , a* 1 , b* 1 ) colour values in CIE L*a*b* space with a hue-angle h ab,1 =a tan 2(a* 1 ,b* 1 ) and another of said application stations used for applying marking particles having (L* 2 , a* 2 , b* 2 ) colour values in CIE L*a*b* space with a hue-angle h ab,2 =a tan 2(a* 2 ,b* 2 ), said hue-angles satisfying the inequality |h ab,2 −h ab,1 +k* 360°|<15° for a number k selected from the group of −1, 0 and +1.