Kalytka M. Information technology for determining the technologically necessary ink filling to increase the accuracy of offset machines

In the dissertation, the information technology of determining the technologically necessary ink filling for an increase of accuracy of ink printing systems adjustment of which gives the chance using the simulation taking into account influence of production conditions on printing process to define optimum parameters of the previous adjustment for multi-plot printed products is developed. To solve the problem set in the dissertation, mathematical and simulation models of ink distribution and transfer at the circular direction in ink printing systems of the different structures have been developed. A mathematical model of the Speedmaster 102 offset printing machine system has been created, which describes the circulating process of ink flow volumes in the j-th zones of the system and their redistribution in the axial direction taking into account the operation mode of the 32-zone ink supply device and oscillator cylinders, and makes it possible to study the influence of technological factors on the nature of the ink flows distribution in the ink printing system and its ink filling. On the basis of such components as mathematical models of ink printing systems, system simulators, programs for analysis of printing forms, and data on the physical printing process, information technology to increase the accuracy of pre-adjustment of ink printing systems is developed which determines the volumes of technologically necessary ink filling and the optimal values of the zonal supply ink thicknesses to ensure high-quality reproduction of multi-plot printing products. The input setup parameters obtained with the help of information technology will not require additional adjustment when the ink printing system enters the operating mode. Key words: mathematical model, simulator, information technology, ink printing system, modeling, technological factors, ink flow volumes, ink filling.