Graphical transformations and animations, 3D, zooming, and distortion effects - these very compelling things are still far from our daily lives. This kind of application that makes plastic printers profitable is based on the use of lenticular film. But there must also be accurate and reliable press technology. One type of press that can provide these necessary prerequisites in the KBA product range is the KBA Geotronic Genius 52UV.
Many of us remembered them from childhood: Pictures of people who could wave one hand or shake one eye. This is usually just a simple image change (variogram) that implies this movement or action. However, in the past few years, the lenticular printing technology has undergone a revolutionary change. The amazing multi-level image can be composed of 16 levels at the same time. They perfectly deceive the human eye and can convey the impression of a movie or perspective painting. There are three factors that have made these recent developments possible, and they play a decisive role in the quality of modern raster printing:
* Fine-structured lens sheet * Precise preparation of digital image data with the help of special software * A printer capable of producing perfectly-registered, vivid, high-precision images.
How Raster Printing Works
Grating technology makes use of optical laws. "Lenticula" comes from Latin and means "lens". A lenticular sheet is composed of a plurality of very small lenticular lenses arranged side by side over the entire sheet, and the lenses are shaped so that their focal planes are exactly on the back surface of the film. Typical lenticular film has 40 to 130 lens lines per inch (15 to 50 lines per cm).
In short, a beam of light from any particular point in the focal plane is refracted by the shape of the lens and forms an approximately parallel beam. Therefore, the observer only sees a small portion of the image behind the lens, for example, only the blue stripes are seen, and therefore only the blue image portion is seen in the entire screen. However, if the observer changes his or her viewing angle, the blue image disappears and is replaced by the green image, and so on.
This effect can be exploited to place several different images or versions of the image behind a single lens. To implement an image sequence with four separate elements, for example, each element must be accurately divided into strips with the same width as a single lens. Here, it is important to make the number of stripes of each original image the same as the number of lenses in the array. The width of this reconstituted "striped" image is naturally four times that of the actual single image. Therefore, it must be compressed to a quarter of its width so that each group can be exactly under one and the same lens (line C of Figure 3). All in all, this is an extremely complex process that can only be completed with the trained eyes of modern software and experienced printers.
An example of Genius52UV
The Korburg Metronic Genius 52UV provides a flexible and efficient press for printing on innovative substrates such as lenticular films. Holger Volpert, a director of KBA Metronic AG, sees this type of press as a high-performance tool for special markets with potential for growth:
"The Genius 52UV is excellent for meeting all the requirements of printing companies that want to complete small to medium print creative jobs with excellent quality and low cost."
Once the final raster image is calculated, it is printed on the back of the transparencies. Holger Volpert, former sales director in charge of printing technology, understands what users are concerned about in daily practice: “Absolute precision is the decisive requirement for raster printing. Since the Genius 52UV ink supply has no ink keys, the ink supply will always remain stable. In addition, the overprint system guarantees that the plate can be mounted automatically and accurately. Therefore, there are very few boot wastes, which is an important reason when using expensive materials such as lenticular films."
Since the number of prints in the small format area is often very small, low consumption and fast print preparation are all necessary conditions. On the Genius 52UV, an operator can complete a job change in just seven minutes. The compact Genius 52UV, which covers only 12 square meters, is a cost-effective waterless offset printable with UV-curable inks, enabling excellent print quality on very different non-absorbent substrates with thicknesses from 0.1 mm to 0.8 mm.
Attractive new market
Raster printing gives depth and motion to the image. Printing products use raster films in this way to achieve something that is becoming more valuable today: they draw attention. Whether it is for advertising, exhibitions, or merchandising, the list of possible applications does not stop. Raster images are especially effective for labels, advertising images, brochures, packaging, decorations, and many other products. Their special eye-catching effects can attract positive responses from very different target groups. But such dynamic images can be more than just a vehicle for decorative impressions. A wide variety of information, functional descriptions, detail views, etc. can be loaded into a raster image.
HolgerVolpert is convinced: "For decades, German-made technology has enjoyed an excellent reputation. Now, this position will be consolidated in a globalized market. We can only succeed if we only have a lasting and intimate understanding of market needs. And if we use our innovative power to develop sustainable potential, what we need is the strategy of creativity and fantasy.Genius52UV gives us a lot of opportunities, and further enhances the strongness of KBA Metronic as a printing industry. The reputation of a loyal partner."
Many of us remembered them from childhood: Pictures of people who could wave one hand or shake one eye. This is usually just a simple image change (variogram) that implies this movement or action. However, in the past few years, the lenticular printing technology has undergone a revolutionary change. The amazing multi-level image can be composed of 16 levels at the same time. They perfectly deceive the human eye and can convey the impression of a movie or perspective painting. There are three factors that have made these recent developments possible, and they play a decisive role in the quality of modern raster printing:
* Fine-structured lens sheet * Precise preparation of digital image data with the help of special software * A printer capable of producing perfectly-registered, vivid, high-precision images.
How Raster Printing Works
Grating technology makes use of optical laws. "Lenticula" comes from Latin and means "lens". A lenticular sheet is composed of a plurality of very small lenticular lenses arranged side by side over the entire sheet, and the lenses are shaped so that their focal planes are exactly on the back surface of the film. Typical lenticular film has 40 to 130 lens lines per inch (15 to 50 lines per cm).
In short, a beam of light from any particular point in the focal plane is refracted by the shape of the lens and forms an approximately parallel beam. Therefore, the observer only sees a small portion of the image behind the lens, for example, only the blue stripes are seen, and therefore only the blue image portion is seen in the entire screen. However, if the observer changes his or her viewing angle, the blue image disappears and is replaced by the green image, and so on.
This effect can be exploited to place several different images or versions of the image behind a single lens. To implement an image sequence with four separate elements, for example, each element must be accurately divided into strips with the same width as a single lens. Here, it is important to make the number of stripes of each original image the same as the number of lenses in the array. The width of this reconstituted "striped" image is naturally four times that of the actual single image. Therefore, it must be compressed to a quarter of its width so that each group can be exactly under one and the same lens (line C of Figure 3). All in all, this is an extremely complex process that can only be completed with the trained eyes of modern software and experienced printers.
An example of Genius52UV
The Korburg Metronic Genius 52UV provides a flexible and efficient press for printing on innovative substrates such as lenticular films. Holger Volpert, a director of KBA Metronic AG, sees this type of press as a high-performance tool for special markets with potential for growth:
"The Genius 52UV is excellent for meeting all the requirements of printing companies that want to complete small to medium print creative jobs with excellent quality and low cost."
Once the final raster image is calculated, it is printed on the back of the transparencies. Holger Volpert, former sales director in charge of printing technology, understands what users are concerned about in daily practice: “Absolute precision is the decisive requirement for raster printing. Since the Genius 52UV ink supply has no ink keys, the ink supply will always remain stable. In addition, the overprint system guarantees that the plate can be mounted automatically and accurately. Therefore, there are very few boot wastes, which is an important reason when using expensive materials such as lenticular films."
Since the number of prints in the small format area is often very small, low consumption and fast print preparation are all necessary conditions. On the Genius 52UV, an operator can complete a job change in just seven minutes. The compact Genius 52UV, which covers only 12 square meters, is a cost-effective waterless offset printable with UV-curable inks, enabling excellent print quality on very different non-absorbent substrates with thicknesses from 0.1 mm to 0.8 mm.
Attractive new market
Raster printing gives depth and motion to the image. Printing products use raster films in this way to achieve something that is becoming more valuable today: they draw attention. Whether it is for advertising, exhibitions, or merchandising, the list of possible applications does not stop. Raster images are especially effective for labels, advertising images, brochures, packaging, decorations, and many other products. Their special eye-catching effects can attract positive responses from very different target groups. But such dynamic images can be more than just a vehicle for decorative impressions. A wide variety of information, functional descriptions, detail views, etc. can be loaded into a raster image.
HolgerVolpert is convinced: "For decades, German-made technology has enjoyed an excellent reputation. Now, this position will be consolidated in a globalized market. We can only succeed if we only have a lasting and intimate understanding of market needs. And if we use our innovative power to develop sustainable potential, what we need is the strategy of creativity and fantasy.Genius52UV gives us a lot of opportunities, and further enhances the strongness of KBA Metronic as a printing industry. The reputation of a loyal partner."
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