Imposition in JDF Francis Labaere Co-chair O&P Esko-Graphics

Imposition in JDF

Francis LabaereCo-chair O&PEsko-Graphics

Today’s Agenda

• Imposition in Job Planning

– Stripping process (resource: StrippingParams)

– JDF 1.3: extended for Pack&Labels

• Imposition in Prepress

– Imposition process (resource: Layout)

• Imposition in Digital Printing

– LayoutPreparation process (resource:

LayoutPreparationsParams)

• Prepress GrayBoxes

Imposition in Job Planning

Optimized production plan

Customer Order

Available machines

Available materials

Available people

Capabilities

Optimal plan

Optimal Plan

• Includes parameters related to

– Printing (press, paper, work style)

– Folding (folding scheme)

– Binding and trimming (assembly method)

• Largely determines the imposition, BUT

– No exact positions (no creep, no bottling, …)

– No press marks, slug lines

JDF Stripping

Stripping

StrippingParams

Assembly

Layout

RunList(Marks)

RunList(Doc)

High level

(Optimal Plan) flattened

StrippingParams

• BinderySignature

– FoldCatalog, SignatureCells, (FoldProcedure)

– JDF 1.3 BinderySignatureType: Fold, Grid, Die

• StripCellParams

– TrimSize, BleedFace, BleedSpine, BleedFoot, BleedHead, …

• WorkStyle

– WorkAndBack, WorkAndTurn, Perfecting, WorkAndTumble, Simplex

• RelativeBox and Position

• SectionList

• References to Device (printing press) and Media (paper and plates) resources

• JDF 1.3 ColorantControl

StrippingParams/BinderySignature

Sheet1,2,3: using FoldCatalog F16-6 sheetwise

folding schemes in FoldCatalog. See Fig 7.9 & 7.10 on pages 368-369 of jdf spec 1.2 (p. 404-405 in PDF)

Sheet1,2: using FoldCatalog F16-6 sheetwiseSheet3: using FoldCatalog F8-7 work and turn

StrippingParams/StripCellParams

BleedFace F1

BleedSpine S1

BleedHead H1

BleedFoot T1

TrimFace F2

Spine S2

TrimHead H2

TrimFoot T2

FrontOverfold F3

BackOverfold F3

MillingDepth S3

CutWidthHead H3

CutWidthFoot T3

TrimSize XYPair

Creep XYPair

StrippingParams/StripCellParams

Sheet1,2: using FoldCatalog F16-6 sheetwiseSheet3: using FoldCatalog F8-7 work and turn

StrippingParams/Position

0 0.5 0.5 1

0.5 0 1 0.50 0 0.5 0.5

0.5 0.5 1 1

Position/@RelativeBox: defines the relative position of the signature (0->1)

Position/@Orientation: defines the rotation and side of the signature. See jdf spec 1.2 p.24 (p.60 in PDF)

StrippingParams/Position/@RelativeBox

StrippingParams/BinderySignature

Sheet using SignatureCells

StrippingParams/@SectionList

0 8p CMYK

1 16p K

2 16p K

3 8p CMYK

4 16p K

64 pages

F8-7Section 0

F8-7Section 3

Sheet1

F16-6Section 1

Sheet 2

F16-6Section 2

Sheet 3

F16-6Section 4

Sheet 4

StrippingParams/@SectionList

Assembly

• Perfect bound “Gathering” (on a pile)

• Saddlestitch “Collecting” (on a saddle)

• Mixed assembly is possible as well

NEW: Step-and-Repeat Stripping

• See tutorial Pack&Labels

Imposition in Prepress

JDF Imposition

Imposition

Layout

RunList(Doc) RunList

RunList(Marks)

Imposed Surfaces

Exact page and mark positions on the sheets

Layout

00 2834.6

2834.6

1843.9

1428.6

2029.6

Layout

00 2834.6

2834.6

1428.6

2029.6

1843.9

Layout JDF 1.2

Layout

• Imposition parameters like work style, assembly, and binding are implicit

• Positions are absolute

• Marks are included

• Flattened description: no difference between one 16-page signature and two 8-pages signatures on a sheet

• NEW JDF 1.3: Layout is partitioned!!!

LayCrImp ICS

• From LayoutCreation tool to consumer of a fully populated Layout

• Producers: standalone imposition tools or Stripping, LayoutPreparation devices

• Consumers:prepress workflow, RIP,…

Imposition in Digital Printing

Imposition in digital printing

• Generates an imposition Layout from high level parameters • Useful for digital printers with integrated prepress• Supports controls for specifying

– Multi-up regular grid of page cells

– Scaling and rotation of reader pages for page cell mapping

– Single sided or perfected (head to head/foot) sheets

– Auto generation of sheet marks and slug lines

– Page distribution schemes for saddle, and perfect binding

– Sequential cut block distribution (i.e. cut and stack post cards)

• Control for vert, horiz, and stack wise distribution of cut blocks

– Independent horiz/vert gutter spacing and creep compensation

– Document and cut block step and repeat

– VDP document ganging

LayoutPreparationParams

• NumberUp– Rows and columns of PageCells

• PageDistributionScheme– Distribution of PageCells over NumberUp (Saddle, Perfect, Sequential)

• PresentationDirection– Distribution of pages into NumberUp (FoldCatalog, XYZxyz)

• Sides– OneSidedFront, OneSidedBackFlipX/Y, TwoSidedFlipX/Y

• FinishingOrder– GatherFold, FoldGather, FoldCollect, Gather

• StepRepeat

LayoutPreparationsParams

• ImageShift

• InsertSheet

• FitPolicy

• PageCell

– Border, Color

GrayBoxes

Gray Box“PrePressPreparation”

Gray Box“PlateMaking”

Gray Box“ImpositionPreparation”

RunListcontent

LayoutMarks

Preview

Nr ofpages

Separations Media

Stripping

In/Out PrePressPreparation

• In

– indication of nr of pages

• can be different from what prepress needs

• Out

– populated RunList

Snippet Node

Snippet Input RunList

In/Out ImpositionPreparation

• In

– Stripping resources

– If not available, operator intervention

• selecting a template

• recommended to give Instruction Comment

– JDF 1.3

• reference to external template

• Out

– Completed Layout

– References to Marks

ImpositionPreparation Level 1

• Level 1 ImpositionPreparation Gray Box

– Stripping is optional

– BinderySignature: only FoldCatalog

– StrippingParams: no SectionList

– Assembly: no mixed assemblies

– StripCellParams: only TrimSize is mandatory

In/Out Platemaking

• In

– Media (plate)

– Colors

– RunLists

• document (content)

• marks

– Layout

• Out

– Ink key setting preview (PPF)

– ExposedMedia (plate)

Snippet PlateMaking

<RunListLink rRef="R0_D" Usage="Input" ProcessUsage="Document"/> <RunListLink rRef="R0_M" Usage="Input" ProcessUsage="Marks"/> <LayoutLink rRef="LAYBody01" Usage="Input"/> <ColorantControlLink rRef="ColorantControl" Usage="Input"/> <MediaLink rRef="Plate000001" Usage="Input"/> <ExposedMediaLink rRef="ExposedMedia" Usage="Output"> <Part SignatureName="SIG1" SheetName="SHT1"/> … <PreviewLink rRef="Preview" Usage="Output"> <Part SignatureName="SIG1" SheetName="SHT1"/>… …

Summary

• Three imposition methods covering different needs

– Stripping (MIS -> Prepress)

– Layout (Imposition program -> RIP)

– LayoutPreparation (Prepress -> Digital press)

• Stripping is extended in JDF 1.3 for Packaging Step-and-Repeat

Imposition in JDF Francis Labaere Co-chair O&P Esko-Graphics

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