ink consumption comparism MM 15.02.2013

INKS coldsetcoldset

CONSUMPTION

Mario Milošević 22.02.2013.

Coldset printing process is unique /lithographyp g p q g p yevery printing house is unique

offset limited processuncoated cheapest papersuncoated cheapest paperscheapest inks(low pigmentation)

fstraight forward tehnologycost effeciencesimplicityshort production frames o t p oduct o f a e

Directly influence on ink consumption havey f pPaper quality

Printing press configurationPrinting press configurationPrinting process /set-offPrepress configurationPrepress configurationWater-ink balance

f fInk emulsification(fount solution quality !)Printing enviroment(conditions)Printing qualityProduct design(layout)oduct des g ( ayout)Media production quality

100 %%

60

70 paper grammage recycled fibre

%

55g

40

50

4/4

55g45g

48,8g42 5g

20

30print

2/2

4/2print

42,5g

0

102/2print

1/1print

1970 1975 1980 2000 2010

grammage recycle fibre

years

Paper is porous and allows penetration

Ink film(1qm ?)

Paper is porous and allows penetration

( q )

penetration

Recycled paper

holes/uncontroledink penetration

Achived same density values

1,6

1,8

2Achived same density values

1,2

1,4

,

Konin

g/m

2

0,6

0,8

1 C

M

Ycons

umpt

io

0,2

0,4

, Y

Ink

c

0

paper 1 paper 2 paper 3

Coldset web offset methods (CSWO) set-off(smearing) /ink lostColdset web offset methods (CSWO) set off(smearing) /ink lost

Inksetting

Set-off

Inktransfer

C ld t i k ll dColdset inks are never really dry

How much ink on newspaper copyp p py

statistic average(IFRA) : 5 gstatistic average(IFRA) :

One copy

5 gOne copy24 pages tabloid4/4 colours0,104166666666667 g per pagebig deviations depend off : ink area coverage/film

i k f td i ink area coverage fontsdesign

322 × 74 - svg.dmi.unict

What we compareWhat we compare24sata,Večernji list,,Kleine Zeitung,Kaufland

d h l cover and the last pagesanalyse ink area coverage in procentageWhich methodJava based image processing softwareJ g p g fImageJmicro areas screeningmicro areas screeningscience approved open source software

thresholdmonochrome pictureonly screen areas coverageonly screen areas coveragemeasurement

3 St3.Stepthreshold

4.Stepscreen area calculation

1.StepPDF to JPG(TIF)

2.Steptransfer to 8-bit

only Kleine Zeitung has a realy newspaper statusy g y p p(ratio) design

TZ printing products are more commercialmore commercial

same density value(standards)printingfsame ISO profiles

colour server AGFA OptiInk working well and make savingsbased on reduction and supstitution chromatic componentsto monochromaticto o oc o at climited total ink coverage on 260%(IFRA standard)

What we can do24sata Večernji list/change design/change layout24sata,Večernji list/change design/change layout

-Reduce ink area coverage (increase free/reduce print surfaces)10%R d f t i / t d di it(t d 5 f t )-Reduce font sizes /standardise it(today one pages 5 fonts)

- right font can save money too

Franklin Gothic,Times,Century,Helveticathe most popular in nespapers

-Compare L*a*b* and density values /CMYKCompare L a b and density values /CMYK-New printing ISO standard don’t use ink density as targets

Because that Kaufland is printed with high density-Because that Kaufland is printed with high densitymagenta and yellow 1,20 !

realy have a colour managementrealy have a colour management

this is a proceess wherepcolours in all devices

has “same language”has same language

What we have to doWhat we have to donew product from heatset tehnology(TV tjedan,Ekran)

K fl dKaufland- new ink calculation model needed !

future comparism between paper (t) and inks consumptionsf p p p pbetween printing houses are complitly

INCOMPARABLEINCOMPARABLE

THANK YOUTHANK YOU