Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
A method of processing a file of recorded color separation values of color elements for use in preparing polychromatic printing plates in order to reduce or eliminate defects caused by misregistration by printing, comprising the steps: (a) defining a plurality of predetermined color types; (b) identifying the color pairs where there is a change in color between adjacent color element; and (c) for each color pair, determining whether or not to make a frame according to first predetermined criteria based on specific combination of color types in the pair, and then according to second predetermined criteria based on the difference in luminance between corresponding color separations in the respective pair.
Claim 2
Dependent Claim
62 words
The method according to Claim 1, wherein for those color pairs in which a frame is to be generated, the location of the frame is determined according to third predetermined criteria based on specific combinations of color types in the pair, and then according to fourth predetermined criteria based on the sum of the luminances of each color in the color pair.
Claim 3
Dependent Claim
40 words
The method according to Claim 2, wherein for those color pairs in which a frame is to be generated according to said second criteria, the frame is generated in the direction of the color having the higher sum of luminances.
Claim 4
Dependent Claim
39 words
The method according to Claim 3, wherein the frame is generated in the direction of the color having the higher sum of luminances by spreading the darker separations of the lighter color in the direction of the darker color.
Claim 5
Dependent Claim
54 words
The method according to Claim 1, wherein it is determined that a frame is to be generated according to said first and second criteria, but the difference in the luminance is below a predetermined value, the frame is generated in both directions towards both colors, with one-half the frame width being of each color.
Claim 6
Dependent Claim
44 words
The method according to Claim 1, wherein said second group of criteria include a determination to make a frame where there is at least a predetermined difference in luminance between two corresponding separations in one direction and two corresponding separations in the opposite direction.
Claim 7
Dependent Claim
48 words
The method according to Claim 1, wherein: a frame is generated when one color of the pair is defined as being a white frame; the frame is generated towards the other color of the pair; and the color of the frame is zero coverage in the process colors.
Claim 8
Dependent Claim
54 words
The method according to Claim 1, wherein: a frame is generated when one color of the pair is a base color and also contains process and/or special separations, and the other is a non-base color; the frame is generated towards the base color; and the frame color is the original color without the base.
Claim 9
Dependent Claim
46 words
The method according to Claim 1, wherein: a frame is generated when one color of the pair is black and the other is a special; the frame is generated towards the darker color; and the color of the frame is the combination of black and special.
Claim 10
Dependent Claim
49 words
The method according to Claim 1, wherein: a frame is generated when the two colors of the pair are specials not to be printed with the same ink: the frame is generated towards the darker color; and the color of the frame is a combination of the two specials.