Agfa-Gevaert has patented a grayscale inkjet printing method involving specific ink properties and voltage waveforms for optimal printing results. The method ensures precise ink ejection from nozzles with defined characteristics, enhancing print quality. GlobalData’s report on Agfa-Gevaert gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Agfa-Gevaert, Document anti-counterfeiting was a key innovation area identified from patents. Agfa-Gevaert's grant share as of May 2024 was 85%. Grant share is based on the ratio of number of grants to total number of patents.
Grayscale inkjet printing method with specific ink properties
A recently granted patent (Publication Number: US11993082B2) discloses a novel grayscale inkjet printing method designed for high-quality printing applications. The method involves supplying a pigmented inkjet ink to a grayscale print head with specific characteristics, including an outer nozzle surface area smaller than 500 µm2 and an acoustic resonance period (ARP) not exceeding 5.5 µs. The ink used must have a viscosity of at least 3.8 mPa·s at the jetting temperature and a shear rate of 1,000 s-1. The voltage waveform applied for ejecting the ink droplets from the nozzle follows a precise sequence, ensuring optimal printing results. Additionally, the method allows for the printing of decorative panels and corrugated cardboard, expanding its potential applications in various industries.
Furthermore, the patent also covers an inkjet printing system that incorporates a piezoelectric through-flow grayscale print head and a voltage waveform generating device. The print head features modules with nozzles of specific dimensions and an ink chamber with an ARP not exceeding 5.5 µs. The system is designed to eject ink droplets efficiently within one jetting cycle, ensuring accurate and consistent printing results. The voltage waveform generating device is configured to control the ejection process, including the generation of non-ejecting pulses when necessary. With a focus on precision and quality, this inkjet printing system offers a reliable solution for industries requiring high-resolution printing on various substrates.
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