Where is screening performed in the workflow?

In my last post I gave an introduction to halftone screening. Here, I explain where screening is performed in the workflow:

 

Halftone screening must always be performed after the page description language (such as PDF or PostScript) has been rendered into a raster by a RIP … at least conceptually.

In many cases it’s appropriate for the screening to be performed by that RIP, which may mean that in highly optimized systems it’s done in parallel with the final rendering of the pages, avoiding the overhead of generating an unscreened contone raster and then screening it. This usually delivers the highest throughput.

Global Graphics Software’s Harlequin RIP® is a world-leading RIP that’s used to drive some of the highest quality and highest speed digital presses today. The Harlequin RIP can apply a variety of different halftone types while rendering jobs, including Advanced Inkjet Screens™.

But an inkjet press vendor may also build their system to apply screening after the RIP, taking in an unscreened raster such as a TIFF file. This may be because:

  • An inkjet press vendor may already be using a RIP that doesn’t provide screening that’s high enough quality, or process fast enough, to drive their devices. In that situation it may be appropriate to use a stand-alone screening engine after that existing RIP.
  • To apply closed loop calibration to adjust for small variations in the tonality of the prints over time, and to do so while printing multiple copies of the same output, in other words, without the need for re-ripping that output.
  • When a variable data optimization technology such as Harlequin VariData™ is being used that requires multiple rasters to be recomposited after the RIP. It’s better to apply screening after that recomposition to avoid visible artifacts around some graphics caused by different halftone alignment.
  • To access sophisticated features that are only available in a stand-alone screening engine such as Global Graphics’ PrintFlat™ technology, which is applied in ScreenPro™.

Global Graphics Software has developed the ScreenPro stand-alone screening engine for these situations. It’s used in production to screen raster output produced using RIPs such as those from Esko, Caldera and ColorGate, as well as after Harlequin RIPs in order to access PrintFlat.

Achieve excellent quality at high speeds on your digital inkjet press: The ScreenPro engine from Global Graphics Software is available as a cross platform development component to integrate seamlessly into your workflow solution.
Achieve excellent quality at high speeds on your digital inkjet press: The ScreenPro engine from Global Graphics Software is available as a cross platform development component to integrate seamlessly into your workflow solution.

The above is an excerpt from our latest white paper: How to mitigate artifacts in high-speed inkjet printing. Download the white paper here.

Looking to reduce errors with simple job management, keep control of color, and run at ultra-high speed for jobs with variable data?

With just a few days to Labelexpo Europe 2019, preparation is in full swing. Come along to booth 9A15 where we’ll be previewing a new version of Fundamentals™, our toolkit for building a digital front end.

Fundamentals is a collaboration between Global Graphics Software and HYBRID Software – and its beauty lies in its simplicity: Fundamentals 2.0 makes it easy for the press operator to keep control of the workflow. Easy step and repeat and nesting via STEPZ with award-winning VDP composition from HYBRID Software makes it possible to estimate and plan single or multi-gang jobs and see how the output will appear when printed, helping to reduce errors and wasted media.

Consistent and predictable color for a wide range of design and creation workflows using industry-standard tools is achieved with Harlequin ColorPro ™  and there’s support for ICC profiles, including device ink and N-channel profiles too.

ScreenPro™, the award-winning multi-level screening engine, streams data directly to the print electronics at press speed, unlocking maximum productivity on variable data jobs to process ultra-high data rates with the reliability required to maximize press up time.

Find out more about Fundamentals here: www.globalgraphics.com/fundamentals

We’ll be on stand 9A15 – please stop by and say hello. If you’d like to book a time to chat, simply contact us: sales@globalgraphics.com. We look forward to seeing you.

Join us on stand 9A15 at Labelexpo2019

Looking for a simple way to print label and flexible packaging jobs? See us at Labelexpo Europe 2019

It’s that time of year again … we’re back from our summer vacations and are now preparing for Labelexpo Europe 2019.

And things have certainly moved on at a pace since we were last in Brussels: This year, on booth 9A15, we’ll be previewing a new version of Fundamentals™, our simple toolkit for building a digital front end. Fundamentals is a cooperation between Global Graphics Software and HYBRID Software and we have developed it so you can access the essential software components you need to create a DFE using a simple, modern web-based user interface.

The latest version, Fundamentals 2.0, has a host of new features that make it easy to print label and flexible packaging jobs in only a few steps and it reduces waste by making the best use of media – all this with accurate, consistent color throughout.

Fundamentals product manager, Tom Mooney says: “We are delighted to introduce some major changes to Fundamentals at Labelexpo, such as Hybrid’s STEPZ imposition and award-winning VDP composition engine, as well as significant technology evolutions with multiple parallel Harlequin RIPs for high-speed PDF processing. We have also introduced a new generation of ScreenPro™ that streams image data at the high press speeds demanded by the new models of digital presses.”

Earlier in the year, we visited Mark Andy Inc (find them on booths 4C45 and 8A60) and saw at first hand how Fundamentals has made a real impact on the Mark Andy ProWORX Digital Front End.

Watch our short film to get the full story:

http://bit.ly/Mark-Andy-Fundamentals

We’ll be on stand 9A15 – please stop by and say hello. If you’d like to book a time to chat, simply contact us: sales@globalgraphics.com. We look forward to seeing you.

www.globalgraphics.com/fundamentals

 

Join us on stand 9A15 at Labelexpo2019

New to inkjet? Come and see us at Hunkeler Innovationdays

Martin Bailey, CTO, Global Graphics Software
Martin Bailey, CTO, Global Graphics Software

If you are new to inkjet and are building your first press no doubt you’ll have many questions about the workflow and the Digital Front End.

In fact, you’re probably wondering how to scope out the functionality you need to create a DFE that is customised to exactly what your customers require. Among your concerns will be how you’re going to achieve the throughput you need to keep the press running at rated speed, especially when handling variable data. Or it might be handling special colours or achieving acceptable image quality that is keeping you awake at night.  And how to achieve this without increasing the bill of materials for your press?

At Hunkeler Innovationdays we’ll have a range of resources available to address just such questions with some real case study examples of how our OEM customers have solved the problems that were causing them a headache using our technology and the skills of our Technical Services team.

For instance, how, on a personalised run, when every label or page might be different, can you stop the press from falling idle whilst the RIP catches up?  Our ScreenPro™ technology helps Mark Andy cut processing time by 50% on the Mark Andy Digital Series HD, enabling fully variable (every label is different) continuous printing at high-speed and at high-quality.

How can you avoid streaking on the image if your substrate is racing under your printheads at speeds of up to 300m/min for aqueous and maybe 90m/min for UV.  Or mottling? The Mirror and Pearl Advanced Inkjet Screens™ available with ScreenPro have been developed specifically to address these problems.

During the lifetime of the press, how can you avoid variations in quality that look like banding because your printheads have worn or been replaced?  Take a look at what Ellerhold AG has achieved by deploying PrintFlat™.

The ScreenPro screening engine is one of the building blocks you’ll need for your inkjet press. Our Fundamentals components provide other functions that are essential to the workflow such as job management, soft proofing, and colour management.

Using a variety of white papers, print samples, video footage and case studies , we’ll be sharing our experience.  So, come along and meet the team:  that’s me, Jeremy Spencer, Justin Bailey and our colleague Jonathan Wilson from Meteor Inkjet if you want to chat about their printhead driver electronics that are endorsed by the world’s leading industrial inkjet printhead manufacturers.

 

Join us at Hunkeler Innovationdays 2019

 

What do you really need in a RIP to drive a digital press in labels & packaging?

In this latest post, Global Graphics CTO Martin Bailey goes back to basics and explores what you need in a RIP to drive a digital press for labels & packaging.

Martin highlights rendering your jobs correctly, color management with CMYK inks and spot colors, PDF layering and technical separations, and provides a high-level view of the features of the Harlequin RIP® for digital labels and packaging.

Watch Martin’s presentation here:

Follow us on Twitter: @Global_Graphics

Fundamentally it’s…

8 Fundamentals _black

It’s been a really interesting week chatting to vendors and the press about our new software and services package for inkjet. In case you missed it, we’ve called it Fundamentals because it combines essential software components and engineering expertise that press vendors need to build a Digital Front End.

What’s the big deal you might say?  Well, The Times They Are A Changing to quote Bob Dylan both in terms of the progression of inkjet technology and the swing towards digital printing in the labels and packaging sector which is where we have focussed our initial offering of Fundamentals.

Thanks to our lengthy graphic arts experience – we’ve been supplying software to drive digital presses since 2002 – we are regularly approached by inkjet press vendors either to intervene at some point in an existing workflow or because they’re starting from a blank sheet of paper and need to figure out how to build a Digital Front End for a new press.

If they have an existing DFE a press vendor might be stuck on output quality, or maybe they can’t get the throughput in speed that they need. If they’re building a new press they might not know where to quickly source the components they need. Or often they can’t allocate enough engineering resource to the DFE when they need to. Plus it takes a very special skill set to know how to wire it all together.

How do we know all this? Because vendors tell us so. And Fundamentals is our response to this market demand. It offers best of breed software products with an engineering service that allows the press vendor to address their specific applications.

It will grow, of course. We are already looking at a Fundamentals software bundle for industrial inkjet for example. But the good news for press vendors is that we can do all of the above and then some!