Information such as best-before date, batch number and data matrix codes have become an integral part of most products. You can find the small letters and graphics on water bottles, milk cartons and beverage cans, on printed circuit boards for computers and on transparent medication packaging. If manufacturers call back batches, this information needs to be easy to read for consumers – smudged fonts cannot be tolerated by a manufacturer. The challenge is to guarantee imprint quality even at high line speeds.
At the Label & Print 2018 trade fair in Zurich (11.-12. April 2018), Leibinger will be showcasing the JET3up – an industrial inkjet printer that keeps up with belt speeds of 600 meters per minute. “The printer is fast enough to mark up to 2000 products per minute in passing,” explains Christina Leibinger, CEO of Paul Leibinger GmbH & Co. KG. “In spite of these high belt speeds, an exceptionally good typeface quality is guaranteed."
The JET3up is used, for instance, in the food and beverage industry, in electronics and cable production, and in car manufacturing facilities. It can print not only up to five-line small fonts, but also graphics, barcodes and all common data matrix codes with a print height of up to 16 mm. Operation is via a 10.4” touchscreen that is as intuitive to use as a smartphone. If the user integrates the printer into the company network, he or she can control the machine from literally any point on the globe and monitor it with a PC, smartphone or tablet.
The JET3up prints without having to touch any products. How is this possible? With a cylindrical print head mounted next to or above the conveyor belt – with which a head pipe of up to ten meters in length is connected to the hydraulic system in the printer housing. The heart of the so-called continuous-injection (CIJ) technology works inside the print head. 120,000 electrically charged ink drops per second shoot through a nozzle in the direction of a collecting tube. When printing, two deflection electrodes come into play. They change the trajectory of individual drops, so that they land as an image point or pixel on the product surface. The remaining drops fly into a catcher tube and circulate in the system.
Non-contact printing always produces good results – with convex and concave, rough and smooth, flat and relief-like product surfaces alike. Smudging is ruled out since the ink dries on glass, plastic, metal, steel and wood in less than a second. The JET3up is also economical in consumption. One liter of ink is sufficient for printing up to 160 million characters.
