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영어

Laboratory test method which determines the emulsification rate of dampening solution and ink, have been described in lithography using the mutual repellence of oil and water. The emulsification is produced by dispersion of dampening water and ink because of the printing pressure on a practical press.
Ink-water balance of rheological properties are the important factor in lithographic printing. The emulsification theory and laboratory test method deduced from Surland and Kim. The effects of each chemicals concentration and pH of dampening solution into change on the emulfisication rate were investigated in this paper. It is shown that the emulfisication curves relate to the rates of change in the emulfisication time and temperature, to the stability of the emulsion balance.
To study on the factors determining the emulsion velocity, we have measured water pickup and calculated emulsification velocity constant and activation energy.