Welcome to the Strasbourg JDF Tutorial

1
Welcome to the Strasbourg JDF Tutorial
2
CIP4 Tutorial and Developer Sessions

• Sunday November 6 2005
• Sofitel Strasbourg
• 10.00-12.00 Tutorial
• 13.00-18.00 Developer Sessions

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Tutorial Session Speakers

• Henny van Esch - Optichrome
• Rainer Prosi - Heidelberg
• Markus Schluep Müller-Martini

4
Outline

• Architectural Overview of JDF
• Experience with JDF

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JDF on One Slide

• JDF is a Graphic Arts Job Ticket Data
  Interchange Format Specification - JDF is not an
  Application or System
• JDF is encoded in XML
• Content is referenced, not embedded
• JDF is extensible
• JDF is based on semantic structures originally
  defined by
• Adobe PJTF
• CIP3 PPF
• JDF Job Definition JMF Messaging JDF
  Capabilities define the JDF Framework

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JDF on Another Slide- Goals and Requirements -

• Why?
• Automation increases Efficiency
• Information allows for informed decisions
• We have a digital content workflow with a paper
  based management workflow that is not useful!
• What?
• Describe a Job in the graphic arts from the view
  point of
• Technical Applications
• Management Information Systems
• Customers
• Collect data that is relevant to a Job from
  origination to delivery
• How?
• See next Slides

7
CIP4 Reference Model
8
JDF Encoding

• XML Encoding
• External references via URI/URL
• XML Schema for Data Type Definitions
• Extensibility using XML name spaces

9
The Building Blocks of the JDF Framework

• JDF Node
• Description of a Process, Process Group or
  Product
• JDF Resource
• Description of a parameter set or physical entity
• JDF ResourceLink
• Link between JDF Nodes (processes) and Resources
• JDF Capabilities Descriptions
• Limitation of a JDF interface
• JMF Messages
• Real time data interchange format

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The JDF Node

• Description of a generic Process
• The Verb in JDF
• Do something at a given time
• Structured container for Scheduling and Auditing
• One JDF node type for both Products and Processes

• Less Precise Product Intentat the Job Root Node
• Abstract ProcessGroup Nodes or Workflow Group
  nodes in between
• Detailed individual or combined Processes in the
  Leaf Nodes

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Product Intent vs. Process Modeling

• Goal of Product Intent Description
• Customers view of the thing they want to
  manufacture
• Contract Negotiation
• Process Independent

12
Product Intent vs. Process Modeling

• Goal of Process Modeling
• Interface between MIS and Production
• Process interdependencies
• Manufacturing Instruction Details

13
Gray Boxes

• Incomplete Model of a Process
• The MIS View of the process
• Its only important if it affects the cost!
• Thus, parameters not affecting costs are not
  important
• Exact Process execution is potentially undefined
• Ordering of steps is not necessarily predefined
• Detailed Work Steps may be left out
• E.g. MIS knows RIPping, but not Trapping or
  ColorSpaceConversion

14
Audit Objects

• Logging of Job Execution
• Actual times
• Start time
• End time
• Phases
• Logging of Late Changes
• Resources (used 85g Paper instead of 80g)
• Consumables
• Status Summary
• Event Log

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Job / Customer Information

• CustomerInfo
• Map Subcontracting via Localized Customer
  Information in any JDF Node
• Customer ID
• Addresses (Delivery, Invoice, )
• NodeInfo
• Scheduling
• Deadlines
• Processing Time Estimation

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JDF Node simple Example

• ltJDF IDN1" Type"Product" JobID"HDM1"
  JobPartIDp1 StatusWaiting" Version1.3"gt
• ltResourcePoolgt
• ltNodeInfo Class"Parameter"
  StatusAvailable ID"Link0001" /gt
• ltSomeInputResource ID"Link0002"
  Class"Parameter" StatusAvailable"/gt
• ltComponent ID"Link0003" Class"Quantity"
  StatusUnavailable" DescriptiveName"SomeOutputRe
  source"/gt
• lt/ResourcePoolgt
• ltResourceLinkPoolgt
• ltNodeInfoLink rRef"Link0001" UsageInput"/gt
• ltSomeInputResourceLink rRef"Link0002"
  UsageInput"/gt
• ltComponentLink rRef"Link0003"
  UsageOutput"/gt
• lt/ResourceLinkPoolgt
• ltAuditPool/gt
• lt/JDFgt

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The JDF Node Node Type

• Individual process types and their respective
  resources are defined e.g.
• Interpreting
• Trapping
• ConventionalPrinting
• DigitalPrinting
• Cutting
• Folding
• Verification
• Delivery

18
Combination of JDF Nodes

• Dont recreate a new Process Type for
  Permutations of known Processes!
• Create combinations of multiple defined processes
  into one process, e.g.
• online finishing printing folding cutting
• in-RIP trapping trapping RIPping
• Three types of Combination Nodes
• Combined Node All internal interfaces are hidden
• Smart multi-function device
• ProcessGroup Internal nodes are accessible
• Without Sub elements (Gray Box)
• MIS view
• With Sub elements
• Workflow group in a department
• Subcontract

19
Combined vs. ProcessGroup

• Combined Node

Combined Node
Res
Res
Res1
Res2

• ProcessGroup

ProcessGroup
Res
Res
Res1
Res2
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JDF Resources

• Specification of Parameters of
• Product Intent description
• Logical Entities, e.g RIP Parameters, Imposition
  setup
• Physical Entities, e.g. Media, Devices, Plates
• Based on Adobe PJTF and CIP3 PPF
• Intent Resources for product intent nodes
• Prepress Adobe PJTF
• Press, Finishing CIP3 PPF
• Internal to JDF or External Links to well-defined
  Formats
• Thumbnails, Preview Files, ICC Profiles, Content
  Data

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JDF RunList Resource Simple Example

• ltRunList ID"Link0003" Class"Parameter"
  StatusAvailable PartIDKeysRungt
• ltRunList Run1 Pages"010"gt
• ltLayoutElement ElementType"document"gt
• ltFileSpec URLFile///File1.pdf
  MimeType"application/PDF"/gt
• lt/LayoutElementgt
• lt/RunListgt
• ltRunList Run2 Pages12-1"gt
• ltLayoutElement ElementType"document"gt
• ltFileSpec URLFile///File2.pdf
  MimeType"application/PDF"/gt
• lt/LayoutElementgt
• lt/RunListgt
• lt/RunListgt

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JDF Resources - Intent Resources

• Parameters are not attributes but rather
  structured Span Elements with the following
  attributes
• Range list of allowed values
• Names
• Numbers
• Ranges of Numbers / Strings
• OfferRange list of proposed values
• Preferred one preferred value
• Actual The selected value from Range or
  Preferred

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JDF Resources - Details

• Special handling of multiple Parts, e.g.
• Sheets
• Separations
• Amounts
• Tiles
• Versions
• Redo one part of a large resource
• Only the yellow plate of the front surface of
  sheet 17
• Parallel processing of partitioned resources
• Selection of devices / operators

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JDF Resources - Partitioning

• One Resource may specify multiple entities
• Multiple Partition type levels, e.g. Sheet,
  Side, Separation
• Inheritance model
• specify common attributes once
• Overwrite individual attributes / elements
• Select individual or multiple parts with a
  ResourceLink

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Partitioning and Nodes
Partitioned Resources with matching partition
keys are connected.
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Partitioned Ink Resource Example

• ltInk IDInkID" BrandProcessBrand"
  Class"Consumable" StatusAvailable"
  MediaType"Coated" PartIDKeys"Separation"gt
• ltInk Separation"Cyan"gt
• ltColor CMYK"1 0 0 0"/gt
• lt/Inkgt
• ltInk Separation"Magenta"gt
• ltColor CMYK"0 1 0 0"/gt
• lt/Inkgt
• ltInk Separation"Yellow"gt
• ltColor CMYK"0 0 1 0"/gt
• lt/Inkgt
• ltInk Separation"Black"gt
• ltColor CMYK"0 0 0 1"/gt
• lt/Inkgt
• ltInk BrandSpotBrand" Separation"Heidelberg
  Spot Blau"gt
• ltColor CMYK"0.7 0.7 0.3 0.7"
  ColorantUsage"spot"/gt
• lt/Inkgt
• lt/Inkgt

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ResourceLink

• Bind a Resource to a Node
• Define Resource Usage (input or output)
• Link to a Subset / Part of a Resource
• E.g. Cyan Plate of the Front of Sheet 1
• Define the Amount
• Allow reuse of Resources by multiple processes
• One resource may be linkedby multiple
  ResourceLinks
• Defines a process network

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ResourceRef

• Used to reference a Resource from within another
  JDF element.
• Resource
• CustomeInfo
• May contain Part elements to select individual
  partitions
• Equivalent to an inline occurence of the
  referenced resource
• Name mangling ResourceRef

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JDF RunList Resource Simple Example with
ResourceRef

• ltRunList ID"Link0003" Class"Parameter"
  StatusAvailable PartIDKeysRungt
• ltRunList Run1 Pages"010"gt
• ltLayoutElementRef rRefL1gt
• lt/RunListgt
• ltRunList Run2 Pages12-1"gt
• ltLayoutElement ElementType"document"gt
• ltFileSpec URLFile///File2.pdf
  MimeType"application/PDF"/gt
• lt/LayoutElementgt
• lt/RunListgt
• lt/RunListgt
• ltLayoutElement IDL1 ElementType"document
  Class"Parameter" StatusAvailablegt
• ltFileSpec URLFile///File1.pdf
  MimeType"application/PDF"/gt
• lt/LayoutElementgt

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ConventionalPrinting JDF Node Example
ConventionalPrinting
ExposedMedia (Plate)

• NodeInfo
• Planned StartTime
• Planned EndTime

Media
AuditPool Actual Resource Usage Actual Time
Summary
Ink
InkZoneProfile
Resource Links
Component (including amount)
Parameters Layout (Control Marks)
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The JDF Node Execution Requirements

• A Node is executable when all required input
  resources are available
• Serial Processing -- Standard
• Parallel Processing -- Partial Resources
• Overlapping Processing -- Pipes
• Iterative Processing -- Draft Resources
• Node dependencies allow process configuration
• A proof node can create an Approval which is
  needed for the press node to operate

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Node Executability
Resource ResourceLink JDF Node
Not Available
Not Executable
Available
Resource Links
Available
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Node Executability
Resource ResourceLink JDF Node
Available
Executable
Available
Resource Links
Available
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Node ExecutabilityAnd Networks
Waiting
Available
Not Available
Links
Not Executable
Available
Links
Available
Available
Not Available
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Node ExecutabilityAnd Networks
Running
Available
Not Available
Links
Not Executable
Links
Available
Available
Available
Available
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Node ExecutabilityAnd Networks
Completed
Available
Available
Links
Executable
Available
Links
Available
Available
Available
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Job Description Models supported by JDF I

• Product Definition
• No Process
• Abstract, customer view
• Segmentation by Product Components
• Serial Processing

RIP
Print
Bind
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Job Description Models supported by JDF II

• Parallel Processing
• Overlapping Processing

Print
Bind
RIP
Print
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Job Description Models supported by JDF III

• Iterative Processing
• Informal Iterative Processing using Draft
  Resources
• Formal Iterative Processing using JMF Messages

Edit
Touchup
Layout
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JDF Tree / Network Structure
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JDF - Spawning and Merging

• Spawn individual nodes of the JDF Tree for
  independent processing
• Parallel Processing
• Subcontracting
• Support for Partitioning e.g. only sheet 1
• Merge back after processing
• Retain information source Context
• Audits
• Modified Resources

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Spawning Merging
Master JDF
Executable Sub-JDF 1
Executable Sub-JDF 2
Step 1 - Prior to Spawning
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Spawning Merging
Master JDF
Executable Sub-JDF 1
Locked Sub-JDF 2
Step 2 - Spawned, Prior to Execution
Spawned Executable Sub-JDF
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Spawning Merging
Master JDF
Executable Sub-JDF 1
Locked Sub-JDF 2
Step 3 - Spawned, After independent Execution Pr
ior to merging
Spawned completed Sub-JDF
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Spawning Merging
Master JDF
Executable Sub-JDF 1
Merged Sub-JDF 2
Step 4 - After Execution After Merging
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JMF Messaging

• Real-time data interchange format
• Small XML structures
• JDF is referenced via URL, not bound into message
• Idea is to minimize network traffic and delay
  transmission of data until it is actually needed

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JMF Messaging

• Used for
• Plug Play bootstrapping
• Snapshots of Job / Device status
• Dynamic job update
• Job submission and Queue/QueueEntry handling
• Capabilities discovery and interchange

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JMF Message Families

• JMF messages fall into five categories
• Command
• Receiver is instructed to take an action, or to
  modify the state of something
• Query
• Receiver is instructed to return information
  about something. No action is taken, no states
  are changed
• Response
• Used to immediately return result of command or
  query
• Synchronous messaging command/query and
  response are exchanged on same open connection

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JMF Message Families

• JMF message categories (contd)
• Acknowledge
• Used to return the result of a command after some
  time has passed
• Asynchronous messaging empty response returned
  immediately on same connection as command with
  indication that Acknowledgement will be sent
  later
• Signal
• Used to send notifications of events or change in
  status
• Typically result of a query with a subscription
  embedded in it
• Subscription sets up persistent channel
• Registration
• Request for commands
• Used to set up triangular workflows
• E.g. MIS tells prepress to send a Command to Press

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Example SubmitQueueEntry message

• ltJMF DeviceID"SP013" SenderID"MIS1TimeStamp"2
  005-11-05T123248-0600"gt
• ltCommand ID"m3829" Type"SubmitQueueEntry"gt
• ltQueueSubmissionParams URL"http//jobserv
  er/getJob?job10047"
• ReturnJMF"http//jobserver/jmfservice"
• Priority"50"/gt
• lt/Commandgt
• lt/JMFgt

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JMF Message Types

• Examples of JMF message that fall within the six
  categories
• Command
• SubmitQueueEntry, AbortQueueEntry,
  ReturnQueueEntry, HoldQueue, ResumeQueue
• Query
• KnownControllers, KnownDevices, Status
• Response
• Various related to various commands/queries
• Acknowledgement
• Various related to various commands/queries
• Signal
• Status, Resource, Occupation
• Registration
• Resource

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CIP4 Open Source Development Tools

• XML Schema
• C API
• Java API
• JDF Editor
• Visualise JDF JMF
• Send Messages
• Elk Project
• Reference Device

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History of JDF

• 1999 Adobe, Agfa, MAN and Heidelberg form the
  GAT initiative with the goal of defining a job
  ticket for the Graphic Arts that also integrates
  MIS.
• 2000 The CIP3 Consortium takes ownership of the
  standard.
• 2001 JDF 1.0 is released.
• 2002 JDF 1.1 is released.
• Ambiguities/Bugs found in implementation were
  removed
• Additional Processes were added
• Consistency between diverse areas was enhanced
• 2004 JDF 1.2 is released
• More additional processes
• Even more mature and consistent
• 2005 First set of ICS documents are published
• JDF 1.3 is released

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Experience with JDF - Advantages

• Single grammar for specifying job data in the
  graphic arts industry
• Integration of Production, Customer and MIS
• Multiple views for Production, Customer and MIS
• Definition of production networks
• Combined Processes
• Defined communication protocol, not only data
  structures
• Extensible Model
• Interaction with other Standards in GA

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Experience with JDF - Challenges / Obstacles

• Number of processes in the graphic arts
• Creative
• Prepress
• Press
• Finishing
• Fulfillment
• Complexity of the standard
• Size of the Specification
• Moving from the Abstract Idea to a Concrete
  Implementation
• Flexibility of the Specification
• Unclear Role of Production networks in
  Interfacing with Devices
• private extensions
• Definition of abstract coordinate systems
• Legacy System Longevity

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Why ICS ?
JDF A ICS JDF B
Product A
Product B
InteroperabilityConformanceSpecifications
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Interoperability Conformance Specifications

• Define a set of Interoperability Conformance
  Specifications ICS
• The term JDF Compliant does not immediately
  imply that two arbitrary applications will
  communicate.
• Sending RIP instructions to a Folding Machine is
  not useful
• Two applications that comply with a given ICS
  will communicate in a meaningful way.
• Product Certification will be based on ICS
  Compliance
• Avoid multiple, incompatible JDF Dialects

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ICS Document Structure
59
JDF Tutorial
Thank you very much for your attention!