![Page 1: By: Elie Khoury - International Color · PDF fileWhat is the purpose of a printing business? •To meet customer expectations: « I just want my color right» 1](https://reader031.vdocuments.net/reader031/viewer/2022030406/5a7f5b637f8b9a9d308b5f79/html5/thumbnails/1.jpg)
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By: Elie Khoury
Building an ISO and ICC compliant workflow
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Matching colorsany product, any printing process
•ISO TC130: Standards
•Alwan Color Expertise: Software
•KEE Consultants: Services
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What is the purpose of a printing business?
• To meet customer expectations:« I just want my color right… »
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Ideal Printing Workflow
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Reference Printing Conditions = Actual Printing Conditions = Product Color MatchCMYK, Spot Colors, n-color… match process capabilities
RPC
APC
Job Process Product
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Actual Printing Workflows
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RPC APC
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Actual Printing Workflows
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Reference Printing Conditions ≠ Actual Printing Conditions = Product Mismatch
RPC APC
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Universal Printing WORkflows Diagram
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Customer expectations
Actual printing process Conformance assessment
Job Process Product
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Color Definition Inaccurate
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• Brand owner, designer… choose, proof and approve colors
• Brand Colors: – ?RGB
– ?CMYK
– ?Named color ink
• Process Colors: – ?RGB
– ?CMYK
⇒ Printer can not identify customer colors
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Color Definition Accurate
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• Brand Colors: – CIELAB: commercial printing
– Spectral, CxF/X-4 (ISO 17972-4): packaging, label, speciality printing
– Solids and Tints
• Process Colors: – Defined RGB, CMYK and OutputIntent
– ICC profiles and Color Data Sets: ISO 15339
– PDF/X: ISO 15930
⇒ Printer can identify customer colors
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Color ReproductionNo Color Management
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• Printing process matches job color definition: APC = RPC
• process and spot inks match
• Process control– Solids
– TVI
– Gray balance (CMYK)
• Printing process does not match job color definition: APC ≠ RPC
⇒ Process colors are not predictable
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Color ReproductionAccurate Color Management
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• Printing process does not match job color definition: APC ≠ RPC
• Process inks /spot inks / substrate do not match
• RPC and APC colors do not match
• Process control is not enough
• ⇒ Color Management: ISO 19302• Composite colors (Device Color Builds)
• Spot Colors (IFS, multicolor printing)
+ Process Control
⇒ Process colors are predictable and accurate
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Color ReproductionInaccurate Process Control
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• Visual assessment
• Solid densities in production
• TRC*: TVI/GB off production
⇒ Process is unstable and inconsistent
*TRC = Tone Reproduction Curve
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Process Color ReproductionAccurate Process Control
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• Solid Aims and Tolerances: ISO 12647, ISO 15339…
• TRC calibration: ISO 10128
• TRC Adjustment file format: ISO 18620
• Automated closed-loop: measurement –> correction –> device -> measurement… – solid colourants
– TRC
– ICC Profile
⇒ Process is stable and consistent
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Color ConformanceInaccurate assessment
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• Brand Colors: – Visual, Density, CIEAB
• Process Colors: – Process inks, Density, Solids only
⇒ Mismatch between
- printer assessment
- customer assessment
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Color ConformanceAccurate
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• Brand Colors: – Spectral measurement: ISO 17972 (CxF)
– ∆E00, ∆h°…: ISO 12647-6 , ISO 19302…
– Metameric index: CIE 15 Publication
• Process Colors: – ∆Eab, ∆E00, CRF
– ISO 15339 data sets, Fogra…
⇒ Match between
- printer assessment
- customer assessment
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Ideal = Actual Printing Workflow
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Standardized Workflows: ISO 19302
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• Printing Workflows Definition, Requirements and Testing
• Color Conformity Assessment of Printed Products
• Commercial, packaging, label, special applications
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Standardized Workflows Benefits
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• Feedback from more than 150 PSO and G7® sites worldwide
• Realistic figures (up to)
Color Preflight -50%
Proof Mismatch -50%
Process Control –50%
Colorant Saving -30%
Color Problems - - -
Customer Satisfaction +++
Ink < ∆E < MI
Print < ∆E
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Standardized Workflows: Bottom Line
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• Non quality issues cost printers 5%+ net profit (Observatoire des medias, UNIC France)
• Automation and Education are Key to profitability.
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Thank You
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www.alwancolor.com