The Hybrid Engraving System was awarded the 2016 Golden Cylinder Award for Technical Innovation at the fall GAA conference in October 2016. Read the Press Release
Cylinder producers who want to improve the quality of cylinder engraving without sacrificing productivity can achieve this goal with the OHIO Hybrid Engraving System. Linework and tonework can be engraved on the same cylinder in a single operation, saving time and improving cylinder throughput. With Hybrid-engrave cylinders, printed results are superior.
OHIO's Hybrid system is unique in how cells are created on the cylinder. While Hybrid's cells look like traditional cells, they are formed by an exclusive algorithm that controls size, shape, and placement. Hybrid engraving combines the benefits of electro-mechanical engraving and chemical etch, with the exclusive ability to place cells off the grid used in traditional EM engraving, providing sharper edges to text.
The cells Hybrid produces are a traditional diamond shape, with cell depths that allow for good ink coverage and the ink transfer predictability of traditional engraving but with a much higher print quality result.
Unlike other technologies, OHIO's Hybrid Engraving works with both linework and tonework. By repositioning both linework and tonework cells at the transition edges, a more accurate reproduction of the original image is achieved.
The Hybrid Engraving system is of special interest to the security printing and anti-counterfeit market.
Stamps, currency, and more have special requirements, such as extremely fine detail. Engraving those very fine lines is what our Hybrid Engraving excels at.
Ohio knew the Hybrid Engraving System would be a great tool for improving linework and reducing engraving times; cleaner and smoother text at lower engraving screens are an engraver operator’s dream. But what about other situations? Could Hybrid Engraving help linework on tone backgrounds or even text that is tone? The answer is Yes!
The latest version of the Hybrid system for Collage and the Spectrum engraver simplifies the function while providing more features. The new features include the ability to affect type-on-tone and text that is not 100%. The following pictures show gravure printing with Hybrid and without Hybrid for the same original image. The positive and negative text are on a 30% tone background. As you can see, the Hybrid text is darker and clearer.
Positive Text without Hybrid Engraving
Positive Text with Hybrid Engraving
The same is true for reverse text-on-tone, offering the same edge sharpening as positive text.
Negative Text without Hybrid Engraving
Negative Text with Hybrid Engraving
Several functions when setting Hybrid values allow the user to control how many cells are affected and the amount of Hybrid to use. These functions can provide results similar to edge sharpening but with better results, because the Hybrid edging is also taking place.
When used with positive text-on-tone, the background tone along the edge of the text is reduced to improve edge contrast of the character, similar to edge sharpening. At the same time, the edges of the text have Hybrid edging applied to sharpen the character.
The opposite occurs on reverse text-on-tone. The tone edge cells are increased to improve contrast and modified with Hybrid edging to give the reverse character a sharper appearance.
In either situation, the amount of Hybrid effect can be limited by the operator, and the software automatically compensates based on the differences between the text and the tone so that the effect is not over-whelming.
Below are samples of 4 point text. Top row shows micro-photographs of the engraving. Bottom row shows micro-photographs of the proof (printed on film).
The image at right is a photograph of engraved tonework. The photograph shows the clean edge in the 25% tone area. Hybrid engraving uses optimized cell placement to produce the best results, on curves and on edges.
Using Selective Area Hybrid allows for very exact control of the Hybrid effects
OHIO Gravure Technologies in Dayton, Ohio USA designs and manufactures advanced equipment for the global gravure printing market. The Engineering, Software Development, and Manufacturing groups work to provide innovative solutions to improve quality and productivity, such as the award-winning Hybrid Engraving System. Our engineering specialty since 1980 is our sub-micron accurate cutting system (Vision engrave head). We provide installation and support for our electromechanical engravers and the prepress layout software Collage for gravure printing.
Ohio Gravure Technologies Inc
1241 Byers Road
Miamisburg Ohio USA 45342
phone +1 937.428.1700
fax +1 937.439.1592