The key role of inks and toners in the field of digital printing
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With the continuous advancement of ink and toner technology, the quality of digital printing has also been improved. When people buy digital printing solutions, they often fall into the trap of non-critical indicators such as rated speed. People's attention is easily attracted by the latest advances in printer heads and resolutions, because these are all things that look rather fancy on the surface.
But in any case, consumables are still an indispensable part of the printing equation. The choice of ink, toner and substrate directly determines the resolution of the image and the overall customer requirements for the job.
Progress in consumables drives the development of printing
Some people may think: "Toner is just toner" and their basic composition is the same. Toner is everywhere in our lives, and we can easily get them. It is like a pilot who drives an airplane. Just install the cartridge and turn on the switch and the printer will start producing.
But the topic of toner is a bit more complicated. There are huge and small differences in the toner products used in digital printing solutions. At the very least, they all have their own different shapes and sizes.
Polymeric toners based on polyester have become more and more popular now because of their strong adhesion, production at higher speeds, and overall performance. This has been recognized by Chuck Havens, material sales manager of Kodak Graphic Communications Group, and arun chowdry, technical development manager.
Kodak Graphic Communications Group is responsible for the production of toner for all of its digital printing equipment, and has made great progress in terms of color gamut, environmental protection and printing durability. In the past few years, the company has continuously introduced green, orange and purple inks; clear inks for on-line glazing and protective coatings; and micr toners specifically for the Kodak digimaster digital production system.
Maryfromm, manager of the Xerox Group toner and developer production company, pointed out: "Toner technology has made significant progress in recent years, and changes in market trends have directly affected our development and production strategies for toner."
“For example,” Fromm explained: “A decade ago, we just started to succeed in the field of color digital printing, and now color printing has become the most important part of the company’s business. To meet the market for color products. And with the demand for new color printing methods, we have also made major adjustments to the way toners are designed and produced."
Xerox is currently producing some of its own toner products using a method called emulsion/aggregation. Fromm reveals the difference between this method and other production processes. He said: "In the past, we mainly produced toner by physical methods. We first mixed different materials together and then grinded them into Small particles of precise size.” Emulsion/aggregation initially produced tiny particles that were then sized and shaped according to the printer's requirements for optimal printing.
Fromm said: "In recent years, we have achieved good results through the implementation of lean production management within Xerox. These measures have enabled us to improve the quality of the project and increase the functionality of consumables, thus further improving the reliability of production."
Canon USA has developed four brands of toner, each designed to meet specific printing equipment and printing markets. Vividtoner (vtoner) is a product that Canon introduced for high-quality color copiers.
Its average particle size is only 5.5 microns. According to the company, this toner can reduce dot gain, ensure image quality consistency, and better maintain gloss uniformity during high-speed printing/copying.
In addition to the above mentioned vivo toner, Canon also introduced three toners: spherical & synergy toner, quick fixing toner and high reliability toner for office color copiers, medium speed black and white copiers and high speed black and white copiers.
At the same time, Canon has been working hard to improve the performance of lucia inks, which are mainly used on the Canon imageprograf twelve-color printer. The lucia range currently includes five new inks: gray, photo gray, red, green and blue. Adding gray inks allows imageprograf users to produce smoother tones, while rgb inks give people a wider color gamut. And lucia inks are formulated in a unique way to work with a wide range of substrates.
Mix of fine ingredients
The owner of the printing company should not be ashamed to ask ink and toner manufacturers questions about product performance. They should understand whether these consumables are suitable for their equipment and rigorously test them to ensure they meet operational requirements.
Hewlett-Packard wrote on his website: "HP substrates, printers and inks are all designed together and can be used as a complete system."
For example, Hewlett-Packard has designed specially formulated inks for its large format printers and related substrates. For its own toner printing solution, the company has also improved toner particles to enable them to quickly fuse and print clearer text and images.
For the HP Sai Angel press, the company introduced two grades of ink to better meet certain production requirements. HP Sai Angel Supreme is ideal for high-volume, high-quality printing, while HP Sai Angel classic inks are suitable for printers who want to achieve high print quality while still producing uninterrupted production.
Most of Hewlett-Packard's Angel inks are produced in their ISO-certified factories, and their products have achieved outstanding results in a number of tests, such as: flash point, surface tension, viscosity, particle size. , drying speed, color intensity, color and gloss, and electrical conductivity.
Xerox's fromm said: "High-speed printing production puts a certain amount of pressure on the performance of the imaging system. The printer must operate at maximum speed, and the customers in the production environment are also responsible for print quality, reliability and press preparation time. Raised a very high standard."