Imposition in JDF

Freddy Pieters

Esko-Graphics

Contents

• Imposition in Job Planning

– Stripping process (resource: StrippingParams)

• Imposition in Prepress

– Imposition process (resource: Layout)

• Imposition in Digital Printing

– LayoutPreparation process (resource:

LayoutPreparationsParams)

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)

• StripCellParams

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

• WorkStyle

– WorkAndBack, WorkAndTurn, Perfecting, WorkAndTumble

• RelativeBox and Position

• SectionList

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

StrippingParams/BinderySignature

<StrippingParams ID="FoldCatalogSample" Class="Parameter" Status="Available" WorkStyle="WorkAndBack" PartIDKeys="SignatureName SheetName"> <BinderySignature FoldCatalog="F16-6"/> <StrippingParams SignatureName="Sig1"> <StrippingParams SheetName="Sheet1"/> <StrippingParams SheetName="Sheet2"/> <StrippingParams SheetName="Sheet3"/> </StrippingParams> <DeviceRef rRef="Reference to printing press in ResourcePool"/> <MediaRef rRef="Reference to paper in ResourcePool"/></StrippingParams>

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

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

<StrippingParams ID="FoldCatalogSample" Class="Parameter" Status="Available" WorkStyle="WorkAndBack" PartIDKeys="SheetName"> <BinderySignature FoldCatalog="F16-6"/> <StripCellParams BleedFace="5.669" BleedSpine="5.669" BleedFoot="5.669" BleedHead="5.669" TrimFace="14.17" Spine="0.0" TrimHead="14.17" TrimFoot="14.17" FrontOverfold="28.346" MillingDepth="0.0" CutWidthHead="0.0" CutWidthFoot="0.0" TrimSize="595.276 841.890"/> <StrippingParams SheetName="Sheet1"/> <StrippingParams SheetName="Sheet2"/> <StrippingParams SheetName="Sheet3" WorkStyle="WorkAndTurn"> <BinderySignature FoldCatalog="F8-7"/> <Position RelativeBox="0 0 0.5 1"/> <Position RelativeBox="0.5 0 1 1" Orientation="Flip180"/> </StrippingParams></StrippingParams>

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

<StrippingParams ID="FoldCatalogSample" Class="Parameter" Status="Available" WorkStyle="WorkAndBack" PartIDKeys="SheetName"> <BinderySignature FoldCatalog="F16-6"/> <StripCellParams BleedFace="5.669" BleedSpine="5.669" BleedFoot="5.669" BleedHead="5.669" TrimFace="14.17" Spine="0.0" TrimHead="14.17" TrimFoot="14.17" FrontOverfold="28.346" MillingDepth="0.0" CutWidthHead="0.0" CutWidthFoot="0.0" TrimSize="595.276 841.890"/> <StrippingParams SheetName="Sheet1"/> <StrippingParams SheetName="Sheet2"/> <StrippingParams SheetName="Sheet3" WorkStyle="WorkAndTurn"> <BinderySignature FoldCatalog="F8-7"/> <Position RelativeBox="0 0 0.5 1"/> <Position RelativeBox="0.5 0 1 1" Orientation="Flip180"/> </StrippingParams></StrippingParams>

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

00

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

<BinderySignature ID="B2x4" Class="Parameter" Status="Available" NumberUp="4 2"> <SignatureCell FrontPages="15 0 3 12" BackPages="14 1 2 13" Orientation="Up"/> <SignatureCell FrontPages="8 7 4 11" BackPages="9 6 5 10" Orientation="Down"/></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

<BinderySignature ID="F16-6" FoldCatalog="F16-6" Class="Parameter" Status="Available"/><BinderySignature ID="F8-7" FoldCatalog="F8-7" Class="Parameter" Status="Available"/><StrippingParams ID="L1" Class="Parameter" Status="Available" WorkStyle="WorkAndBack" PartIDKeys="SheetName BinderySignatureName" PartUsage="Implicit" rRefs="F16-6 F8-7"> <StrippingParams SheetName="Sheet1"> <BinderySignatureRef rRef="F8-7"/> <StrippingParams BinderySignatureName="F8-7" SectionList="0"> <Position RelativeBox="0 0 0.5 1"/> </StrippingParams> <StrippingParams BinderySignatureName="F8-7" SectionList="3"> <Position RelativeBox="0.5 0 1 1"/> </StrippingParams> </StrippingParams> <StrippingParams SheetName="Sheet2"> <BinderySignatureRef rRef="F16-6" SectionList="1"/> </StrippingParams> <StrippingParams SheetName="Sheet3"> <BinderySignatureRef rRef="F16-6" SectionList="2"/> </StrippingParams> <StrippingParams SheetName="Sheet4"> <BinderySignatureRef rRef="F16-6" SectionList="4"/> </StrippingParams></StrippingParams>

Assembly

• Perfect bound “Gathering” (on a pile)

• Saddlestitch “Collecting” (on a saddle)

• Mixed assembly is possible as well

<Assembly ID="ASM200" Status="Available" Order="Collecting"/>

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

0

Front

3

1843.9

996.3

1428.6

2029.6

Layout

Back

21

00 2834.6

2834.6

996.3

1428.6

2029.6

1843.9

Layout

<Layout Class="Parameter" ID="ID2" Status="Available"> <Signature Name="signature1"> <Sheet Name="sheet1"> <Surface Side="Front" SurfaceContentsBox="0 0 2834.64566 2834.64566"> <MarkObject CTM="1 0 0 1 0 0" Ord="0"/> <ContentObject CTM="1 0 0 1 1428.66137695 996.377929688" ClipBox="1422.99206543 990.708679199 2029.60632324 1843.93701172" Ord="0"/> <ContentObject CTM="1 0 0 1 810.708679199 996.377929688" ClipBox="805.039367676 990.708679199 1411.65356445 1843.93701172" Ord="3"/> </Surface> <Surface Side="Back" SurfaceContentsBox="0 0 2834.6456 2834.645669"> <MarkObject CTM="1 0 0 1 0 0" Ord="1"/> <ContentObject CTM="1 0 0 1 810.708679199 996.377929688" ClipBox="805.039367676 990.708679199 1411.65356445 1843.93701172" Ord="1"/> <ContentObject CTM="1 0 0 1 1428.66137695 996.377929688" ClipBox="1422.99206543 990.708679199 2029.60632324 1843.93701172" Ord="2"/> </Surface> </Sheet> </Signature></Layout>

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

Imposition in Digital Printing

Impostion 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

Impositioning

&

MIS to Prepress ICS

ICS

• Level 1 ImpositionPreparation Gray Box

– BinderySignature: FoldCatalog

– StripCellParams: WorkStyle

– Assembly (no mixed assemblies)

Summary

Summary

• Three imposition methods covering different needs

– Stripping (MIS -> Prepress)

– Layout (Imposition program -> RIP)

– LayoutPreparation (Prepress -> Digital press)

• Open issues for “imposition” (aka step & repeat) for packaging