Travel Bag,Overnight Bag Women,Travelers Backpack,Small Travel Bag Ningbo Happiness Stationery Industrial & Trading Co Ltd , https://www.nbcnhappiness.com
(2) The diversity of direct media and plate imagesetters is the same, and the diversity of direct media systems is dazzling. Currently, there are silver salt plates, photopolymer plates, and infrared thermal plates. Material and inkjet plate four categories.
â— Silver salt plate Silver salt plate mainly includes silver salt and PS plate composite plate, up-diffusion plate and down-diffusion plate. The silver salt and PS plate composite direct plate mainly uses the high sensitivity and wide color sensing range of the silver salt emulsion layer to complete laser direct scanning imaging of the plate, and the requirements of the printing process are satisfied by using the excellent printability of the PS plate. The ingenious combination of the use of the mature silver salt photosensitive material and the PS plate material technology to construct a direct plate material has caused a sensation in the early days when the direct plate material appeared. The printability and printability are exactly the same as in the traditional PS version. However, this plate has a complicated structure and requires multiple exposures and post-processing such as development (fixing), and the process is cumbersome. This is also the main reason why this type of plate is difficult to realize large-scale industrialization.
The up-diffusion type direct plate is composed of a plate base, a silver salt emulsion layer and a physical development core layer. After laser scanning imaging, diffusion development is performed. The silver ions in the unexposed areas diffuse upward and are reduced to metallic silver by the physical development nuclei of the surface layer and become oleophilic surfaces. The surface layer of the exposed area is still an emulsion layer and has good hydrophilicity. The substrate of the plate can be either a metal material such as aluminum or a flexible polymer substrate such as a polyester substrate, in most cases a flexible polymer substrate such as Mitsubishi Paper Mills Launched Silver DigiPlate. The printability of this type of printing plate is generally 1 to 20,000 printed. The photosensitive range basically covers all spectral ranges from ultraviolet to near-infrared, and it can be exposed and imaged on an image photosetter without having to purchase a special plate image-setter. Extensive adaptability.
The down-diffusion type silver salt plate is composed of an aluminum plate having a good hydrophilic surface, a physical development core layer, and a silver salt emulsion layer. After laser scanning imaging, diffusion development is performed. The silver ions in the exposed area diffuse downward and are reduced to metallic silver by the underlying physical development nucleus and become the last lipophilic surface; then the emulsion layer is removed and the surface of the hydrophilic plate base in the exposed area is exposed as a hydrophilic layer. This plate has a very high sensitivity and color sensing range, and is also very resistant to printing forces, suitable for high-end commercial printing. (To be continued)
Plate imaging technology (3)
For example, Barco introduced Mondrian and Viking, two new types of platesetters: infrared laser thermography; the latter equipped with UV laser diodes; CreoScitex exhibited the Trendsetter series and the LOTeM series platesetter, the former being characterized by Equipped with a 40 W/CM2 infrared laser head; ECRM's "Cat" series of imagesetters (DesertCat, Wildcat, TigerCat) can also be equipped with different laser light sources; AGFa's launch of the GaLILeO series of platesetters equipped with UV-LD and Infrared Thermal Laser (15W/CM2); FUJI's LUxeL CTP Series Platesetter can be used for infrared thermal imaging (IR-LD light source) and visible light imaging FD-YAG (532nM) or AR+ ( 488nM); IMaGe MakeR CTP series platesetter can easily replace the scanning laser head, the available light sources are YAG (1064nM), HeNe (635nM), AR+ (488nM) and UV-LD (410nM).