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1. The influence of layout finish
Gravure printing plate at present most used electronic sculpture plate making craft, electric carving process, nets of acupuncture point edge will produce the burr. If into the ground to burnish clean when burr, in printing process, page layout have burr parts of the ink is not easy to scraper, serious damage to the sword scraping ink when, thus forming cutter line. Due to rough surface in the plate printing cutter line, can use 1200 fine sand paper burnish purpose gently plate, but usually it is better not to burnish the printing plate, plate to avoid the damage.
2. The influence of chromium layer hardness
Plate making, if chrome plated time is too long, the printing plate surface hardness is too high, chromic layer to injury blow, printing ink knife will appear the unsteady cutter line. If, on the other hand, chrome plated time too short, the printing plate surface chromium layer too soft, scraping ink knife, in print plate to damage will appear on the sword of the fixed line.
3. The influence of cleanness of layout
The grinding process of plate making generation is not entirely clear debris and adhere to the plate in the printing process, will damage the plate and scraping ink, which causes the knife knife line. The new computer before printing, best first by solvent its thoroughly clean again, will clean from oil, grease and dirt, in order to reduce prints line fault production. Sword
4. The influence of mechanical processing precision
The printing plate cylinder of machining accuracy can lead to poor prints the sword, and is hard to test line fault or easily check to, so easy to ignore, practical, the computer can check. In addition, still should strictly control the installation accuracy of plate, lest because error in high speed exceeds bid, concentricity printing ink scraping knife to produce big impact and cause prints cutter line of failure. (Gold Printing Group) |
