The preflght specifications of the GWG in detail. What we have today ...

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The preflght specifications of the GWG in detail. What we have today ...

GWG PDF

Specifications

Today - Tomorrow

Peter Kleinheider

Co-Chair of GWG Specifications Subcommittee

inpetto:zipcon consulting, owner

Donnerstag, 19. April


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Why additional

“PDF Standards”

beside PDF/X

!"#$%-!./0

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Donnerstag, 19. April

Today: GWG 1v4 Spec

•Base: PDF/X-1a

•Limitations for various printing conditions

!Sheetfed-Offset

!Web-Offset (Magazine)

!Newspaper

!AD delivery for Magazine and Newspaper

individual specifications

!Office Printing

!Packaging

Donnerstag, 19. April


PDF/X-1a Workflow

Image

and

artwork

Layout

PDF/X-1a

Output

/X

Export to PDF/

X-1a (PDF 1.3)

GWG 1v4

Check

Trapping

Export to PDF (via PS)

Impose

Output

Donnerstag, 19. April

Deliverables

•PDF Creation Settings

•Preflight Profiles

•Specifications

•Whitepapers

Donnerstag, 19. April

Usage of GWG 1v4

•mature Specification

•based on PDF/X-1a, a well recognized and

accepted standard (since 2001)

•all major tools are PDF/X-1a „savvy“

!Creation

!Modification

!Proof

!Output

Donnerstag, 19. April


AND NOW….

The all new

GWG2012 Specifications

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But WHY

•Everything is working, isn’t it

•Transparency

Donnerstag, 19. April

Transparency - the major

force to move to PDF/X-4

•INFO: live transparency is supported

since PDF 1.4

!even PDF/X-1a:2003 is based on PDF 1.4,

transparency groups are not allowed

Donnerstag, 19. April


classical usage

Drop-shadows

„ W e r n o c h n a c h S o m m e r - L e k t ü r e s u c h t : H i e r i s t s i e ! “

Brigitte

„... gehört zum besten

elegischen Ton der

Ge genwart.“ FAZ

„Eine ungeheuer

fesselnde und sinnliche

Erzählung von

besonderer sprachlicher

Schönheit. Eine echte

Entdeckung.“

Amelie Fried in der ZDF-

Sendung „Die Vorleser“

„So eindrucksvoll ist das

Ende der Kindheit lange

nicht mehr beschrieben

worden.“

Spiegel Online

224 Seiten, gebunden, mit Schutzumschlag und Lesebändchen

19,90 E [D], ISBN 978-3-86648-101-5, www.mare.de

Donnerstag, 19. April

classical usage

clipping

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extensive use of

transparency

Donnerstag, 19. April


extensive use of

transparency

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why keep transparency in

PDF

!no flattening “artifacts”

Donnerstag, 19. April

why keep transparency in

PDF

!no flattening “artifacts”

!no unnecessary object conversion (Text-2-Outline)

Donnerstag, 19. April


why keep transparency in

PDF

!no flattening “artifacts”

!no unnecessary object conversion (Text-2-Outline)

!higher quality

• transparency effects are directly rendered to high-res raster image

Donnerstag, 19. April

why keep transparency in

PDF

!no flattening “artifacts”

!no unnecessary object conversion (Text-2-Outline)

!higher quality

• transparency effects are directly rendered to high-res raster image

!no object clipping (segmenting)

Donnerstag, 19. April

why keep transparency in

PDF

!ability to search is preserved

!ability to edit is preserved

!keep spot colors definitions till the very end even

when printing CMYK only

Donnerstag, 19. April


why keep transparency in

PDF

!no viewing issues

• no antialias effects when viewing (thin white lines)

• Acrobat (Reader) does not rely on overprint simulation

!faster export

!smaller files

Donnerstag, 19. April

why keep transparency in

PDF

!no viewing issues

• no antialias effects when viewing (thin white lines)

• Acrobat (Reader) does not rely on overprint simulation

!faster export

!smaller files

!allow color managed PDFs

• objects can keep their original color space since the file is not

flattened to the blending color space

Donnerstag, 19. April

further PDF/X-4 aspects

•optional content (layers)

•modern compression methods

•OpenType Fonts

•ICC V4 Profiles

Donnerstag, 19. April


PDF/X-4 and color

•all icc based color definitions are allowed

GWG2011 spec restricts the usage

!CMYK/Spot only Version

!ICC/CMYK/Spot Version

Donnerstag, 19. April

Tomorrow: GWG2012 Spec

Process colour spaces: CMYK

•Base: PDF/X-4 (Version 2010)

•updated Limitations for various printing

conditions

!Sheetfed-Offset

!Web-Offset (Magazine)

!Newspaper

!AD delivery for Magazine and Newspaper

•other specifications use same base

specification

!Packaging

!Office Printing

Donnerstag, 19. April

New in GWG2012

•effective total ink coverage

!taking into account black overprint

!taking into account live transparency

Donnerstag, 19. April


New in GWG2012

•effective total ink coverage

!taking into account black overprint

!taking into account live transparency

Donnerstag, 19. April

New in GWG2012

•effective total ink coverage

!taking into account black overprint

!taking into account live transparency

Donnerstag, 19. April

New in GWG2012

•effective total ink coverage

!taking into account black overprint

!taking into account live transparency

Donnerstag, 19. April


New in GWG2012

•more precise definitions

Donnerstag, 19. April

New in GWG2012

•more precise definitions

Donnerstag, 19. April

New in GWG2012

•more precise definitions

Donnerstag, 19. April


New in GWG2012

•more precise definitions

•defined precision for comparison

!font size of 11.999 pt is treated as 12 pt

!font size of 11.901 pt is treated as 11.9 pt

•spot color naming applies to all spot

colors

•removal of outdated requirements

!less unnecessary warnings

Donnerstag, 19. April

New in GWG2012

•Example Report

Donnerstag, 19. April

native PDF/X-4 Workflow

Image

and

artwork

Layout

PDF/X-4

Output

/X

Export

GWG2012

Check

Trapping

Export to PDF (via PS and pdfmark)

Impose

Output

Donnerstag, 19. April


PDF/X-4 – lets start using it

•… the Standard is mature

!PDF/X-4:2010 - technical update last September

!no ambiguity (ok, maybe a little bit …)

•… the Workflows have “ripened”

!at Drupa 2008, Adobe announced Print Engine 2

(APPE)

!Harlequin Version 8 supports PDF1.6

!EFI announced use of APPE with IPEX 2010

!major (soft-)proofing software is based on native

PDF rendering

•… the applications are ready

Donnerstag, 19. April

PDF/X-4 creation

Donnerstag, 19. April

PDF/X-1a creation

Image

and

artwork

Layout

PDF/X-1a

/X

Export

GWG 1v4

Check

Donnerstag, 19. April


PDF/X-4 (CMYK) creation

Image

and

artwork

Layout

PDF/X-4

/X

Export

GWG2011

Check

Donnerstag, 19. April

PDF/X-4 (ICC) creation

Image

and

artwork

Layout

PDF/X-4

/X

Export

GWG2011 ICC

Check

Donnerstag, 19. April

Thank you

Peter Kleinheider

peter@inpetto.cc

skype: gironimus

mobil: +43.664.2600099

Donnerstag, 19. April

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