The smaller the size of the FM network, the greater the impact on the life of the printing plate. Smaller dots wear faster on the printing plate, resulting in a decrease in the printing rate. In contrast, the thermal CTP plate has the best performance because it has a harder dot. The silver salt version is also good, but due to the development of the printing plate, there is an additional variable added.
Since frequency modulation and amplitude modulation screening technologies hold the same term, they have accordingly introduced mixed screening technologies. In the past few years, some developers have launched their hybrid screening technology. Although this technology appeared soon, it has received widespread attention in the industry. Developers providing this technology include Fujitsu, Dainippon Screen, AGFA and CREO.
Most of the hybrid screening products developed by these companies add amplitude modulation network in the intermediate tone area (10% to 90%), and increase the frequency modulation network in high-light and dark tone areas. Its purpose is to obtain richer details in highlights and shadows and to avoid the appearance of particles in the midtones. From a production practice point of view, moving from AM to hybrid screening is much easier than moving directly to FM.
Fujifilm's hybrid screening product, Co-RES, was tested at Rink Printing. During the test, Rink Printing produced two plates, a traditional plate with a 175-line screen, and a Co-RËs plate with a 300-line screen. The operator did the pre-print preparation work according to the 175-line screen process, and then without any changes, the operation of replacing the printing plate was completed. Without making any changes, we have obtained high-quality prints with rich details and true colors.
Glenbard Graphics of the United States is a high-yield commercial printing company and is the first user of Screen's Spekta technology. The company owns several sheet-fed presses and rotary presses. It operates in two shifts and operates mostly in six-color jobs. At present, all the businesses in the plant use Spekta hybrid screening technology, which has greatly improved the quality. In the past, in order to output 200 lines of work, an output resolution of 4000 dpi was required, and now Spekta Hybrid Screening Technology provides high-resolution, sharp dot-replication and requires only 2400 dpi output resolution, and new technology is applied to the corporate belt. A higher profit came.
In recent years, both FM screening and hybrid screening technologies are on the rise, and they will undoubtedly become one of the largest enterprises in the industry. They will open the door to CTP technology and six-color Hexachrome hi-fi printing.
Network FM and AM Technology
February 10 07:07:33, 2024
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