Thermal Transfer Film Gravure Printing Waste Ink Utilization System Development

Printing plants usually use the gravure printing process to print the thermal transfer film.Due to the structure of the machine and other reasons,there will often be ink leftovers during the printing process,and these leftover inks become waste ink.Since the chemical substances contained in the ink are difficult to be simply treated,how to turn waste ink into treasure has become a major problem for printing plants.Aiming at the problem of waste ink utilization in gravure printing,this paper proposes a set of waste ink utilization solutions based on formula analysis.By using the color matching algorithm to calculate the formula for the customer's samples and inventory waste ink,the approximate formula composition of the customer's samples and inventory waste ink is obtained.The type of waste ink is selected in the waste ink warehouse according to the formula composition of the sample sent by the customer according to the most economical principle,which can fully reduce the use cost while ensuring the color matching effect.Compared with the traditional method of establishing 6-8 gradient databases for each waste ink,this method does not need to establish a gradient database for waste ink,which greatly reduces the workload while ensuring the accuracy of color matching.Through actual experiments in the factory,this system greatly simplifies the waste ink use process and reduces the requirements for the professional level of color matching personnel.The color matching accuracy meets d E<2.0,meets the factory accuracy requirements,and helps the gravure printing factory greatly reduce waste Ink processing cost,storage cost and labor cost.1.In view of the current low accuracy of gravure printing in the initial color matching,the Kubelka-Munk theory of computer color matching and existing color matching algorithms are studied and analyzed,and an improved color matching algorithm is proposed,which is based on linear interpolation matching algorithm using a single constant.Formula matching,a ratio color correction method is proposed to modify the color matching results to improve the accuracy of the color matching results;use experiments to verify the new color matching algorithm,and through the experiment of178 target colors,it is concluded that the new algorithm reaches the initial matching accuracy rate 43.8%,the accuracy rate of secondary color correction reaches 97.7%,and the new algorithm meets the color matching needs.2.This article analyzes in detail the current situation of excessive waste ink in the printing industry.By studying the deficiencies of the current waste ink utilization plan,a preferred waste ink utilization plan is proposed.By analyzing the composition of samples sent by customers and waste ink,The most economical solution is selected,and the color matching purpose is achieved by adding basic ink to the waste ink inventory of the printing factory.The optimal solution can greatly save the production cost of the printing factory.Design experiments and verify that the waste ink utilization solution can solve 70% of the color matching work.And save production costs.3.This article compares the differences between the current manual color matching and computer color matching processes,and analyzes the defects of manual color matching in the process.The interface of color matching software is designed by using Visual Studio.