Plate leak of how to solve?
Version of the film part of leak ink, known as the leak of the fault, the reasons are as follows: part of the scraper injury: the pressure of scraping: version with large clearance between substrates: space deformation is large, local printing pressure is not enough: ink viscosity is too high: uneven ink: screen carefully: printing speed is too fast, etc.
If the substrates and dust mixed with the ink, do not add processing is printing, hurt by the scraper pressure changes version of the film: plate exposure wooden foot when produce pinhole, etc., will make the version of the film produces ink leakage phenomenon.At this time, can use tape version from attaching to do such as emergency treatment.If the operation is not very fast, we will layout the ink dry, had to use solvent wipe the version of the whole.Wipe the edition is also the cause of version of the membrane stripping, so it's best to avoid.Version of the leakage of ink in ink for part of the frequent, therefore is best when plate making to strengthen this part.
In the process of manual knot of printing material, insert the metal plate and rigid plastic printing machine, Angle prick version of the film easy to happen, so be very careful.Generally the best check before printing and reinforcement.In order to prevent leakage of ink.To prior to the start of the printing plate for inspection or repair: version of the pinhole of membrane to mend, the sides of the plate to strengthen fully, and then start the printing.
Misting how to solve?
Flying ink or ink drawing phenomenon, the reason is: ink grinding uneven: when printing scraper from slow: printing image around more than white little: produce electrostatic, cause the ink scraping the voids through small.
Zi mo how to solve?
Zi mo refers to substrates by sections and dark tone appears punctate imprinting, the phenomenon of damage the printing effect.Especially using transparent ink is easy to produce this kind of phenomenon.Its reason has the following points: printing speed and too slow to dry ink: ink layer too thin: ink thixotropy: electrostatic effect: ink pigment dispersion in bad, because of the polarity of the pigment particle, particle agglutination, color spots.
Improving method is: ink liquidity: use the fast dry solvents: as far as possible with high viscosity of the ink printing: try to use with small amount of oil absorption of pigment ink made of: as far as possible to reduce the influence of static electricity.