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July 2018Tom Mooney, Product Manager, Global Graphics
Software
Introducing ScreenPro™
with PrintFlat™
180329
Copyright © G...
High-speed halftone screening
& quality improvement
for inkjet printers and presses
3
Two editions of ScreenPro technology
ScreenPro core
technology
Contone raster
or PDF
Screened
raster
ScreenPro core
tech...
4
ScreenPro
 Turn-key application
• Fully brandable and translatable
 No need to develop code yourself
 Hot-folder mana...
5
ScreenPro Core
 Integrate ScreenPro into your
own application
• Simple to integrate, simple to
license
 Windows DLL or...
Improve print quality “out of the box”
on many inkjet presses so they
are quick to deploy
Copyright © Global Graphics Soft...
7
Screens and screening engines
 Advanced Inkjet Screens (Mirror and Pearl)
are halftone screen designs
• Similar to Elli...
8
 Advanced Inkjet Screens may be applied either:
 In Harlequin:
 In ScreenPro
Where to apply screens?
Job
(PDF)
Harleq...
9
When would you choose each?
 Screen in Harlequin if:
• Screening is the only post-processing you need
• You want maximu...
Corrects for non-uniformity
Copyright © Global Graphics Software Limited 2018
1
1
No good deed goes unpunished
 Improved screening takes
away noise that masks
other effects
• So now we have to fix th...
1
2
What causes non-uniformity?
 Variation within a head
• Commonly a ‘smile’ shape
• Caused by pressure or voltage chang...
1
3
We’re told: “I can fix that by tuning voltages! …”
 Not all heads have sufficient adjustment points to
correct the sm...
1
4
Much better to do this in software
 Very fine granularity
• Can address every nozzle separately
• On any head/electro...
Copyright © Global Graphics Software Limited 2018
For more information visit
www.globalgraphics.com
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Introducing ScreenPro™ with PrintFlat™

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ScreenPro offers high-speed halftone screening & quality improvement for inkjet printers and presses

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Introducing ScreenPro™ with PrintFlat™

  1. 1. July 2018Tom Mooney, Product Manager, Global Graphics Software Introducing ScreenPro™ with PrintFlat™ 180329 Copyright © Global Graphics Software Limited 2018
  2. 2. High-speed halftone screening & quality improvement for inkjet printers and presses
  3. 3. 3 Two editions of ScreenPro technology ScreenPro core technology Contone raster or PDF Screened raster ScreenPro core technology OEM code Contone raster Screened raster ScreenPro ScreenPro Core
  4. 4. 4 ScreenPro  Turn-key application • Fully brandable and translatable  No need to develop code yourself  Hot-folder manager for input and output  Input file formats supported: • TIFF • JDF (for integration with an Esko workflow) • Optional Direct PDF (with an integrated Harlequin RIP)  Output to TIFF • Or use BreakThrough to develop custom raster formats  Available on Windows
  5. 5. 5 ScreenPro Core  Integrate ScreenPro into your own application • Simple to integrate, simple to license  Windows DLL or Linux Shared Object  Includes sample command line application
  6. 6. Improve print quality “out of the box” on many inkjet presses so they are quick to deploy Copyright © Global Graphics Software Limited 2018
  7. 7. 7 Screens and screening engines  Advanced Inkjet Screens (Mirror and Pearl) are halftone screen designs • Similar to Elliptical or Round dots for offset printing but optimized for Inkjet • They need to be applied to each job as it’s processed through the Digital Front End (DFE) for a press  Think of • A halftone screen design as equivalent to an ICC color profile • The screening engine as the equivalent of a color management module (CMM)  ScreenPro is a screening engine Job Halftone screen design Screene d job Screening Engine
  8. 8. 8  Advanced Inkjet Screens may be applied either:  In Harlequin:  In ScreenPro Where to apply screens? Job (PDF) Harlequi n Screened job raster Electronics & heads Job (PDF) Harlequi n Unscreene d job raster ScreenPro Screened job raster Electronics & heads
  9. 9. 9 When would you choose each?  Screen in Harlequin if: • Screening is the only post-processing you need • You want maximum throughput speed  Screen in ScreenPro if: • Your workflow starts with a raster file, e.g. a TIFF, in the output device colorspace • i.e. you don’t need a RIP at all, even for color management • You’re using a RIP from another vendor (e.g. Esko) but need to replace their screening with something faster/higher quality • You want to RIP off-line and screen on-line • RIPing speed is not deterministic; screening is • You cannot ever 100% guarantee RIPing at engine speed on all jobs • You want to use functionality in ScreenPro that is not available in Harlequin • e.g. PrintFlat to correct for banding or non-uniformity
  10. 10. Corrects for non-uniformity Copyright © Global Graphics Software Limited 2018
  11. 11. 1 1 No good deed goes unpunished  Improved screening takes away noise that masks other effects • So now we have to fix those! Both uncorrected Original Blurred to make the density variation more obviou Copyright © Global Graphics Software Limited 2018
  12. 12. 1 2 What causes non-uniformity?  Variation within a head • Commonly a ‘smile’ shape • Caused by pressure or voltage changes  Variation between heads • Especially as heads become field replaceable  Head wear Density ONE HEAD Copyright © Global Graphics Software Limited 2018
  13. 13. 1 3 We’re told: “I can fix that by tuning voltages! …”  Not all heads have sufficient adjustment points to correct the smile  Often time-consuming work for an expert • Increases time and cost of installation or head replacement  Not readily automated for closed-loop correction  Difficult in head overlap/stitching regions  Reduces jetting stability and (anecdotally) head lifetime • Especially risky to tweak heads beyond warranty limits  Causes ink pressure and timing/drop speed variation • Which increase ink coalescence on the substrate … • Which causes texture artifacts … That sounds familiar! That’s why we created AIS! Copyright © Global Graphics Software Limited 2018
  14. 14. 1 4 Much better to do this in software  Very fine granularity • Can address every nozzle separately • On any head/electronics  Almost instant once output is measured • Can be automated for closed-loop correction  Doesn’t affect • Jetting stability or head lifetime • Warranty compliance • Ink pressure and timing/drop speed variation • Ink coalescence on the substrate • Halftoning Corrected in software Original Blurred Original Blurred Uncorrected Copyright © Global Graphics Software Limited 2018
  15. 15. Copyright © Global Graphics Software Limited 2018 For more information visit www.globalgraphics.com

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