How to use glass printing to make cost-effective?
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UV printing technology opens up new opportunities to try to print on different types of substrates. Then there is printing on the glass. UV inkjet flatbed printing technology can be implemented faster and more economically.
UV glass printing has become very popular and widespread. Along with new developments in this field, vivid reproduction of graphics and other items on glass (such as mirrors, windows, signs, glassware) is achieved.
Personalized printing
UV-LED inkjet printing on glass is becoming more and more personalized and customized. Technological advances have made it more cost-effective to print short-run print projects with personalized images. What is different from the ceramic design of the ceramic series is that digital inkjet produces photo-quality images that print a smooth gradient with a large color gamut.
The UV-LED inkjet process is not dense, it does not require a post-press process, which is a more economical way to generate unique prints in a relatively short period of time.
Print service providers who produce medals, trophies and license plates have always been concerned with UV-LED inkjet printing technology, and products are no longer limited to laser-etched brand names and logos that hold photos. Medals can now be made entirely of glass, including smooth color gradient images and logos. The versatility of UV-LED systems has also opened up products that print more than glass.
More products can be personalized with photos. Glass Christmas ornaments can be printed with family photos, company logos and personalized messages, and images printed directly onto the glass give a modern photo frame.
Glass to achieve more applications
Glass is one of the most modern and ideal building materials used in modern architecture. While such traditional materials can be found everywhere, such as windows, glass roofs and glass doors, architects and designers still want to use this material more generally for decoration.
The Durst Rho Vetrocer 250 combines the advantages of our Rho range of printers: Variodrop-CF printhead technology, continuous printing, highest print speeds and the best image quality. This series of printers is equipped with a special transport mechanism that can Smoothly guide the glass sheet up to 2.5 meters wide during printing. In the two color conversions, the time required for screen printing production, machine preparation and drying processes is avoided. In addition to operational advantages and economic advantages, shorter response times and supply times provide added value to customers.
New substrate innovation
The art of printing on glass is now a trend. This in turn drives the interest and demand for digital design in interior design and decoration. The painters have discovered a new way to print on glass, they can be at the dining table, coffee table, shower door, glass toll booth, glass plate and others. They display and sell their paintings on the East and combine them with artistic expression. Painters, architects and interior designers have already contacted traditional signage and display companies in order to expand their creativity. With the development of UV printing, they Found a new 'canvas'.
Currently, another popular application is to print on glass and print unique architectural signs that can be used inside the office building and reception area. The end user prints the sign on the reverse side and mounts the glass on the stand, allowing ambient light to be displayed through the sign.
We have seen glass prints that are up to 240 cm long and mounted on the porch. The optical properties of the glass enhance the reverse printing effect and increase the contrast of the printed image on the glass. Another popular application is printing onto etched glass, which is used as a natural binder for UV printing, while providing greater durability (adhesion), adding a subtle 'bright spot' to ordinary clear glass. .
Printing process
For some end users, printing directly on the glass does not require an adhesion promoter, but depending on the specific application, the durability achieved without the adhesion promoter depends to a large extent on the final product being scratched. The extent and how to carry it. Painters and interior designers have found that reverse-printing glass is a very effective method and does not require the use of tackifiers. Printing on the back allows the final product to be protected by the glass itself.
UV printing can also be successfully performed on the glass without coating the glass. A painter prints on glass with a low-curing amount of light and then cures the print with a non-printing channel. Another user likes the 'double-print' glass print, which allows the print to face outside and allow the natural light to cure the glass print. Double or ‘multiple passes through the printer’ creates a thick product on the glass that creates a richer, deeper image as the light passes through the printed image. ”
Glass etching is also a method of protecting glass by adding an adhesion promoter or liquid overlay, which adds a 'teeth' to the printed surface. This tooth allows the UV ink to bond better to the glass and is extremely durable.
The success of printing on glass depends on excellent adhesion and bonding. There are three techniques that can be used to improve adhesion when printing with UV-LED printing technology.
The first method is to apply a primer.
This technique requires that the primer be applied to the entire surface of the glass, preferably with a lint-free cloth, and the primed surface will give a hazy, dull appearance. The turbidity can be wiped off with a clean rag before printing. If the entire surface of the glass is to be printed, it is not necessary to thoroughly polish the glass after drying.
The second is to use the Mimaki PR-100 printer to print the primer spray.
The PR-100 is part of the UJF series of UV-LED desktop printers and the JFX series of UV-LED (larger format) platform printer inks. The advantage is that the primer can be accurately printed to where it is needed without the need for additional wiping or polishing. However, it is highly recommended to start with a clean surface.
The third technique is plasma processing.
This technology is widely used in digital printing applications, and plasma processing has two modes of operation. First, it removes various surface impurities such as dust or solvent residue that may remain. At the same time, it produces a surface that is more conducive to the combination of ink. The plasma does not damage or melt the substrate or coating surface as compared to the flame treatment process. However, plasma processing equipment is not cheap.
Old driver tips and tricks
There are several key steps to follow to extend the life.
First, it is recommended to wear cotton gloves when printing: bare hands or latex gloves will leave grease and stain the surface of the glass. In addition, due to the manufacturing process, the glass has a transparent side and a 'fogging' side (the side exposed to the air during cooling), and must be printed on the transparent side of the glass. ”
The biggest difference between other UV printing processes and specialized glass printing processes is the post-printing baking process. EFI recommends that the UV inkjet printer bake the printed glass through a conveyor belt into the oven for 10 minutes at a temperature of 343 °C. This baking process permanently bonds the glass, primer and ink together for long-lasting use.