G 7 applications of in the corrugated market

G 7 applications of in the corrugated market Mark R. Mazur digital prepress consultant mark. r. mazur@usa. dupont. com (302) 999 -2534 Cyrel Packaging Graphics Products ®

flexography strengths cycle time variable repeat wide variety of substrates high speed environmentally friendly lower total delivered cost weaknesses quality perception lack of standards

G 7 is all about standardization

what color is this block

G 7 will tell us the color - whether you can print that color is a different issue.

ISO ECI PPA FOGRA ANSI (Europe) (North & South America) CGATS Japan NPES SWOP SNAP IPA (IDEALLIANCE) GRACo. L FTA (FIRST)

the G 7 standards ink color gray balance neutral print density curve (NPDC) simply put: if the inks are the same and the tone reproduction is the same the printed result should be the same.

the G 7 standards ink specifications - ISO 12647 -2 Cyan Magenta Yellow Black L 54 47 88 18 a -37 75 -6 0 b -50 -6 95 -1 c 62 75 95 Tolerances L ± 3, a & b (± 2). h 233 355 94

gray balance gray 50% C 40%M 40%Y a 0 b -2

the G 7 standards standardized "Neutral Print Density Curve" Neutral Print Density G 7 Neutral Print Density Curve 2. 00 K 1. 50 CMY 1. 00 0. 50 0% 10% 20% 30% 40% 50% 60% 70% Target Dot Percentage 80% 90% 100%

all you need is solid ink color, gray balance and the neutral print density curves to define all 4, 294, 967, 296 colors in a process image G 7 postulate

lets start with ink

confusion just looking at cyan L ISO 12647 ISO 12647 ISO 2846 -5 FIRST Gloss Coated Wood free Matte Coated Wood free Gloss Coated web Uncoated White Uncoated yellowish Uncoated pap/Corr. board Coated Paper Film/Foil Solvent Water UV c 54 54 54 62 58 58 54 50 56 59 56 62 59 56 45 43 50 62 49 62 59 59 h 233º 236º 229º 234º 240º 234º 227º 229º 230º

the G 7 standards ink specifications - ISO 12647 -2 Cyan Magenta Yellow Black L 54 47 88 18 a -37 75 -6 0 b -50 -6 95 -1 c 62 75 95 Tolerances L ± 3, a & b (± 2). h 233 355 94

examples newspaper

examples corrugated

examples folding carton

examples labels

examples wide web film

examples envelope matte coated

examples wide web film

same ink anilox A anilox B

gray balance gray 50% C 40%M 40%Y a 0 b -2

nothing new for flexo

1. 40 1. 20 color density (C, M or Y) 1. 00 0. 80 0. 60 0. 40 0. 20 0. 00 0. 20 0. 40 0. 60 0. 80 1. 00 neutral gray density 1. 20 1. 40

what is different the old dot gain targets would tell you where you are G 7 - tells you where you are, where you want to go and how to get there!

gray control points Dot % Density K C/M/Y Density 40. 6% 0. 22 25% 25/19/19 % 0. 26 47. 3% 0. 27 30% 30/24/24 % 0. 31 59. 5% 0. 38 40% 40/33/33 % 0. 42 69. 8% 0. 50 50% 50/40/40 % 0. 54 88. 9% 0. 89 75% 75/66/66 % 0. 91

the G 7 standards standardized "Neutral Print Density Curve" Neutral Print Density G 7 Neutral Print Density Curve 2. 00 K 1. 50 CMY 1. 00 0. 50 0% 10% 20% 30% 40% 50% 60% 70% Target Dot Percentage 80% 90% 100%

GRACo. L 7 Neutral Print Density Graph (K) 2. 00 Neutral Print Density 1. 50 1. 00 0. 50 0% 10% 20% 30% 40% 50% 60% Target Dot Percentage 70% 80% 90% 100%

GRACo. L 7 Neutral Print Density Graph (CMY) 2. 00 Neutral Print Density 1. 50 1. 00 0. 50 0. 00 0% 10% 20% 30% 40% 50% 60% Target Dot Percentage 70% 80% 90% 100%

the G 7 Characterization Step 1: Print the P 2 P target

measure the P 2 P target

determine adjustments

adjust profile target based on P 2 P target and print

the G 7 wide web test target

last step: varify

current software limitation must go to press twice could get all information from an IT 8. 7/4 then apply adjustments mathematically to profile

corrugated example

let's get quantitative

initial standardization run

initial standardization run

initial standardization run

varification run

varification run

varification run

final varification run

final varification run

final varification run

let's get quantitative how close can we make a label press match the GRACo. L 2006_coated 1 standard

initial standardization run

initial standardization run

initial standardization run

final varification run

final varification run

final varification run

why flexo should embrace G 7 simplify the prepress workflow reduce costs uniform appearance across printing industry ease of repurposing artwork globalization it is what our customers - the print buyers are demanding

thank you Steve Smiley Vertis

thank you Li-Wen Chen liwenc@clemson. edu Graduate Student Jay Sperry jsperry@clemson. edu Training/Testing/Research Coordinator

Thank you! applications of G 7 in the corrugated market Mark R. Mazur digital prepress consultant mark. r. mazur@usa. dupont. com (302) 999 -2534 Cyrel® Packaging Graphics Products