Analysis of offset printing ink printability regulation Four Misunderstanding

In the film production process, often need to adaptive adjustment of the use of ink.To adapt to different products, different paper printing needs. Suitable for printing ink to adjust. Is realized by adding auxiliary material in the ink. Due to theunderstanding of the auxiliary materials are not the same or prejudice, so. In the actual production is likely to enter some of the &ldquo error of &rdquo, not just as one wishes results.

One, complete with adhesives instead of inking oil

In the production process. When printing large area ground version. Ink in ink roll transfer process is not easy to beat or paper &ldquo hair &rdquo, printing rough phenomenon. Is generally caused by high viscosity ink.

Go to the adhesive and inking oil to reduce the viscosity of the ink, but their properties are not exactly the same. Go to the adhesive inhibited the ink drying andreduce the ink layer and paper adhesion properties in reducing the ink viscosityand. Ink in the ink, can play to reduce ink viscosity and increased ink liquidity effect.On the ink layer drying speed is not very obvious influence but. If the ink addexcess viscosity reducer to reduce ink viscosity, is likely to generate &ldquo printing on &rdquo or not dry ink layer &ldquo powder &rdquo phenomenon. So inaddition to the adhesive to the attention of &ldquo &rdquo problem, must not let down. Keep it in proper ratio. And at the same time increase the amount ofdesiccant. In order to avoid the adverse consequences.

Two, with the white ink as diluting agent

Individual ink added to dilute agent to be light-colored ink in the ink, the agents should be diluted with colorless and transparent properties. Light and rcheulishvili oil are the ideal blunt spilled agent, it has not changed the original ink but can change the original ink depth effect. If the white ink as diluent agent. It is improper.For white ink has white color jet ink, it will change the original ink color ink tends tomake original white rather than as a light-coloured ink. This is the operator need light color ink intent. And in the offset printing process. If the ink in white ink composition too much, because white ink pigment particles than the major,occurrence of pigment particles to stack in a printing plate or blanket in ink conveying process will. And cause imprinting rough ills.

Three, do not distinguish between the adhesive and adhesive difference

The printing ink to join the adhesive, can rise to prevent or mitigate paper on the back table sticky dirty problem after printing. To Gu Jing is to reduce ink viscosity, it is mainly to play its role in the printing ink transfer process in. If not add to distinguish the two be confused, is likely to create other problems.

If the back table to prevent paper ink sticky dirty in the ink to join to the adhesive,viscosity reducer &ldquo not &rdquo properties will make the printing ink layerdrying time and run counter to one's desire to make paper surface and are more likely to stick dirty. On the other hand, if in order to reduce in the process of printing ink in viscosity and join the more the adhesive, it not only can not very well play a role viscosity. Will make the ink &ldquo coarsening of &rdquo. To lose luster and influence the quality of the products.

Four, do not pay attention to the red and white blasting explosive oil oil difference.

Red dry oil (also called drilling dry oil) and white dry oil (also called dry oil) are all ink desiccant, but because two of their different ingredients. The dry form of cracklayer are not the same.

Add the red dryness oil ink can make the ink layer surface oxidation of trabeculectomies accelerated dramatically in ink layer surface is fast drying. But the red dryness oil but can't make ink layer inside the drying speed is greatly improved. Baicao oil can promote the all-round ink layer dry performance, when adding white dryness oil ink, drying velocity layer surface and interior of the ink cangreatly improve the. Therefore. When we use the desiccant. Must pay attention tothe difference between the two dry form. For example. For ink layer surface for dry.Red dryness oil is better than that of white dryness oil.

But in case of printing ink layer thick solid plate or paper drying properties due tothe relationship between the pH itself to the ink layer is poor when, if the operator simply use red dry oil as ink oil dry thorns, and appears likely to ink layer surfaceis dry but not very dry state inside. This print, in the case of external rubbingconditions, it is easy to put ink layer erase print left and affect the quality of the product is rubbing marks.

In addition, in the printing gold ink, silver ink and need to add desiccant. The general use of red dryness oil to add white dry oil. Because the white dryness due to oil and gold ink, silver with ink. Has the tendency of grey ink tend to be original.This print will affect gold, silver ink sheen effect.