1. Blending ink
For example, we should look into the color of some of it first. If there is deviation, the print board book quality will be affected. When there is a certain difference between the ink color and also the product design draft. Let us check whether the ink is properly mixed first. And then adjust it according to the specific situation.
In the event the ink color is too deep, you can an appropriate quantity of inking oil or white ink to neutralize. So as to achieve the desired color.
2. Adjust viscosity
Before mass printing, we have to adjust the printing viscosity based on the depth of the printing plate. On this process, no water must be added into the ink, provided that new ink with consistent viscosity is added. Which can effectively take care of the consistency of the batch of patterns and shades. Thus improving children’s book printing quality.
3. Do an adequate job of inspection
Before mass printing, look into the printing plate carefully. Because the printing plate maybe move slightly when the printing machine is rotate rapidly. On this process, the printing plate is susceptible to slight deviation. That will lead to what we often call "inaccurate overprint". Thus, the operator should check the transfer position with the pattern for inaccurate overprint often during the transfer process. And if found, adjust it with time before do mass manufacture of children’s book printing.
4. Pay attention to the change of printing plate and machine
Take note of whether the small dot of sunshine adjustment on the shiny part of the printing plate is worn. If the printing plate has scratches. Whether or not the printing plate is loose. And pay attention to the abnormalities that could occur during the operation of the printing machine. In the event of any abnormality, steer clear of the machine for maintenance with time and replace the parts if required.
Normally before mass production, children’s book printer is going to do a proof sample book for your confirmation first. If need any change, they'll improve then move on with mass production.