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Color Reproduction on High Density Printing. Doosan Chung, DaimuYasuhira, Nippon Heihan Kizai Takei, IGU Kinoshita 2007-02-07. 1、 Introduction Web Offset Test IPCC (Intergovermental Panel Climate Change) Sustainability. 1、 Yellow Ink (Red Shift) 2、 Magenta, Cyan 3、 RI Tester

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color reproduction on high density printing

Color Reproduction on High Density Printing

Doosan Chung,

DaimuYasuhira,

Nippon Heihan Kizai Takei,

IGU Kinoshita

2007-02-07

2007-2-7 IGU

introduction web offset test climate change sustainability
1、IntroductionWeb Offset TestIPCC(Intergovermental Panel Climate Change)Sustainability

1、Yellow Ink (Red Shift)

2、Magenta, Cyan

3、RI Tester

4、Ink Transfer Model

5、CMS

6、Korea Color vs. Japan Color

7、High Density Printing (Nova Space,

Wide Color)

2007-2-7 IGU

preliminary experimental photo1
2、Preliminary Experimental(Photo1)

RI Tester (Akira Manufacturing Co.)

2007-2-7 IGU

calibration by x rite s photo2
3、Calibration by X-Rite530S(Photo2)

N01

No2

No3

No4

Size=24×5 cm

No5

※ Ink : 韓國特殊INK工業  ;両面ArtPaper

2007-2-7 IGU

yellow ink density
Yellow Ink Density

2007-2-7 IGU

yellow chromaticity
Yellow Chromaticity

3=1.14

5=1.04

1 =1.44

2007-2-7 IGU

cyan no5 density
Cyan No5 Density

2007-2-7 IGU

yellow magnified color diagram j k nova space wide color jcp2001 doosan ri tester
YellowMagnified Color Diagram(J,K)Nova Space, Wide Color,JCP2001,Doosan, RI Tester

2007-2-7 IGU

red magnified color diagram j k nova space wide color jcp2001 doosan
RedMagnified Color Diagram(J,K)Nova Space, Wide Color,JCP2001,Doosan

2007-2-7 IGU

y m c equations from graph polynomial expression approximate curve d ha
Y,M,C EquationsFrom Graph Polynomial expression approximate curve (D-HA)

y C= 22.735x2 - 62.019x + 283.33

R2 =0.9575

yM = 22.763x2 - 53.929x + 31.311

R2 = 0.9706

y Y= -7.5322x2 + 9.6369x + 89.284

R2 = 0.9887

2007-2-7 IGU

c l diagram
c*-L* Diagram

2007-2-7 IGU

summary
5、Summary

1、Correlation for Density Value of Yellow ink (Y) is high for c* and reverse for L*& HA.

2、Increasing Y Ink trend to reddish.

3、These correlations between Ink density & chroma on Y,M,C are order of Y>M>C.

4、The a* minus values of chromaticity Y are under Density=1.

5、The 2nd~4th sheets of each ink are stable in ink transfer.

6、The 2nd Experiment of low density is necessary.

2007-2-7 IGU

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