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Marcus Thielen Discusses LED Corrosion

Marcus Thielen Discusses LED Corrosion

Winter, electrolytic effects and humidity play roles

This month, I'll deal with corrosion - especially the electrolytic effects in LED Signs, because humidity is one of the worst wintertime enemies of electric signage. Corrosion, from the Latin corrodere, which means “eating away,” describes how some chemical agents (like acids) can change an object’s constitution and finally dissolve it. I’ll confine myself here to metal corrosion, because it’s the most prevalent type of corrosion in signs. 
Rusting iron is the most common form of metal corrosion. However, iron won’t rust automatically; kept dry or in absolutely pure water, it’ll stay shiny forever. But in a humid environment, iron transforms into a brittle, brown-grey substance: rust, chemically called iron oxide (more precisely: a mixture of different iron oxides, oxide-hydrates and/or iron carbonates). To understand corrosion – and prevent it – we need insights into its surface chemistry.

Friday, January 15, 2016/Author: Lindsay Merwald/Number of views (1437)/Comments (0)/
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UV-Cure Printing Onto Plastics

UV-Cure Printing Onto Plastics

When UV-curable inks and UV printers first hit the market, they sounded like the perfect solution for all of our problems. But of course when something sounds too good to be true, it probably is. And while UV-cure printing has many advantages over printing with conventional inks, the reality is not exactly a panacea.
Monday, December 28, 2015/Author: Lindsay Merwald/Number of views (1703)/Comments (0)/
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Think Ink: Low-Migration UV-Curable Inkjet Inks

Think Ink: Low-Migration UV-Curable Inkjet Inks

With its improved graphics quality and increased productivity, inkjet technology is expanding rapidly into new applications like label printing and packaging graphics. With these new applications come new requirements not previously considered in the design of inkjet inks and media. This is particularly true for common UV-curable inkjet inks. They incorporate chemicals incompatible with food and pharmaceutical packaging and labeling. Here we will discuss the issues and some of the efforts to design inks and media that meet these new requirements.
Monday, December 21, 2015/Author: Lindsay Merwald/Number of views (1726)/Comments (0)/
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Significant growth in functional and industrial print markets

Significant growth in functional and industrial print markets

A new report from Smithers Pira: The Future of Functional and Industrial Print to 2020, examines the rapidly emerging use of printing-for-profit in novel areas outside the traditional graphics and packaging arenas. This wide range of applications in professional 3D printing, printed electronics, biomedical and more are driving market growth, in a collective industry quantified by Smithers Pira as being worth $67 billion in 2015 – and reaching more than $107 billion in 2020.
Monday, December 07, 2015/Author: Lindsay Merwald/Number of views (1604)/Comments (0)/
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The Challenges of Functional Inkjet Printing

The Challenges of Functional Inkjet Printing

New digital technologies are addressing nozzle clogging, viscosity, ink migration and – always – hoping to increase print speed.

Printing done within industrial manufacturing processes has traditionally been dominated by analog methods, particularly screen printing. Inkjet is increasingly becoming part of the discussion, however. Beyond well-known commercial applications, such as signage and outdoor advertising, inkjet printing now commands the majority of the market for tile decoration. Almost all expiration dates and batch codes on beverage cans are inkjet printed. Inkjet is playing an increasing role in printing glass, packaging, flooring, laminates, and other home décor products.
Wednesday, December 02, 2015/Author: Lindsay Merwald/Number of views (1783)/Comments (0)/
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A Closer Look at the Design and Typography of Unique Labels and Products

A Closer Look at the Design and Typography of Unique Labels and Products

As senior graphic designer at Roland DGA, one of my personal highlights each year is creating print samples to show-off the capabilities of our machines. We start these design and print projects by creating a pseudo print brand to showcase our specialty inks and features such as print/cut. Like everything at Roland DGA, this is a team effort and with the help of amazing freelance illustrators like Joe Diaz, these projects are always some of our most eye-catching and impressive.
Wednesday, November 25, 2015/Author: Lindsay Merwald/Number of views (1732)/Comments (0)/
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The Power of Digitally Printed Packaging

The Power of Digitally Printed Packaging

Digital Printing and more specifically inkjet printing technology has made vast advances over the past two decades. We can comfortably say almost everyone in today’s world uses inkjet technology or comes across an inkjet printed product. It has made serious inroads into various printing applications, at times revolutionising the applications themselves staying true to its disruptive nature. Paper printing for home or office use, Graphics, Coding & Marking, Ceramics, Textile, Glass are some applications/industries where inkjet is competing with conventional process’s or has replaced the conventional process. Digital printing is becoming increasingly important as business’s are changing their strategies from mass production to mass customisation. However, digital print is only just beginning to infiltrate the packaging market and demonstrate its true potential for seamless and personalised advertising, both on and offline.

Wednesday, November 18, 2015/Author: Lindsay Merwald/Number of views (1674)/Comments (0)/
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A Very Brief History of Industrial Inkjet Printing

A Very Brief History of Industrial Inkjet Printing

Industrial applications for inkjet are expanding rapidly – perhaps the most exciting developments in all of printing. The roots of these breakthroughs can be traced back further than you may think.
Monday, November 09, 2015/Author: Lindsay Merwald/Number of views (1532)/Comments (0)/
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The Tangible Benefits of UV and UV LED

The Tangible Benefits of UV and UV LED

UV technology, both traditional UV and UV LED, offers a great many advantages for print service providers. Among them are many tangible benefits that allow shops to parlay greater flexibility, a wider array of capabilities and lower materials, energy and labor costs into new opportunities for profit.
Wednesday, October 28, 2015/Author: Lindsay Merwald/Number of views (1652)/Comments (0)/
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Getting the Best Results from Your LED Exposure System

Getting the Best Results from Your LED Exposure System

Once you understand the output characteristics of your exposure unit and the peak absorption of the stencil system you wish to use, you can better gauge its compatibility. Figure 9 shows the typical absorption curves for the three types of stencil systems (Red: Acrylate sensitizer – Combined with diazo in dual cure emulsions; Blue: Diazo – Alone in single cure emulsions; Green: SBQ – Photopolymer emulsions.) Provided that an exposure system generates sufficient energy at the wavelengths where the stencil systems are reactive, the crosslinking necessary to harden the stencil will take place.

Tuesday, October 20, 2015/Author: Lindsay Merwald/Number of views (1738)/Comments (0)/
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