In the actual printing and use, usually according to the specific technological conditions, the appropriate adjustment of the original ink of some appropriate, or the need to deploy a variety of color between the color or complex ink, the specific operation should pay attention to the following matters:
(1) Consistency: It is generally adjusted with an appropriate amount of resin type quick-fixing varnish or thinner, or 6-point resin varnish. If the temperature is low, the ink becomes thick, and the fixing becomes slow, it can be properly added. Mineral oil (ink oil) adjustment.
(2) Viscosity: When the viscosity needs to be adjusted, it can be adjusted with a small amount of releasant or No. 6 resin varnish, or it can be adjusted with mineral oil (ink oil). If the temperature is too high, the solvent of the ink evaporates, and the crust or dryness appears on the ink roller, a small amount of No. 6 resin varnish can be added to the transfer roller to reduce the viscosity.
(3) Dryness: Under the normal process conditions, it is usually not necessary to add driers. For example, when printing the last color or single color, trace amount of white dry oil can be added; if the temperature and humidity of the workshop change, the water content of the paper changes. When the fixing speed is affected, appropriate measures are taken as appropriate.
(4) Concentrated color matching: Use this product with the same series of ink to match with color ink or complex ink.
(5) Light-tune color matching: The use of withdrawal agent is the main method, and it is not appropriate to use transparent dipping ink or white oil.
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