What does the PS version of the print mean?
PS is an acronym for "Presensitized Plate" in English, meaning "pre coated" in Chinese, and was first developed by 3M Minisota (Mining & ManufacturingCompany) in 1950. The PS version is divided into two types: photopolymerization and photolysis. Photo polymerization type with negative original print, the text of the diazo photosensitive film, see light hardening, stay on the plate, non graphic parts of diazo photosensitive film can not see the light, not hardened, dissolved by the developer solution removed.
The PS version is an aluminum version for printing, specifically a PS version of the film!
The light splitting type is used to print the original image of the positive image. The diazo compound in the non image part is broken down by the photolysis and dissolved by the developing solution. The diazo compound that remains on the plate is still not visible. PS version of the pro oil part is a high publication base plane about 3 m diazo photosensitive resin, is a good lipophilic hydrophobic film, ink is easy to spread on top, and water is difficult to spread on it. Diazo photosensitive resin also has good wear resistance and acid resistance. If the baking temperature of 230 ~ 240 DEG C for 5 ~ 8min, and the photosensitive film of enamel, but also can improve the hardness of the plates, plates rate up to 20 ~ 300 thousand. PS version of the hydrophilic part is three oxidation two aluminum film, high publishing base plane about 0.2 ~ 1 m, hydrophilic, wear resistance, chemical stability is better, so the printing plate printing rate is relatively high. PS version of the fine grain, high resolution, the formation of network clean and complete, so the color reproducibility, high image sharpness; a blank part of the PS version of the high moisture capacity, printing plate of large water consumption, water, Mo Pingheng easy to control.
