Regularities of Ink-Water Balance Stability in Offset Printing

Abstract

Ink transfer onto the printed surface is provided by parameters as follows: dampening solution in ink emulsification level, dampening solution parameters as long as its ingredients and their exact dosing, dampening solution transfer features between fountain rollers, blanket and printing plate and printed material surface characteristics, thickness and volume of ink on the printing plate, level of ink setting on the imprint. Deviations in transfer from the optimal parameters cause the negative consequences. On the other hand there are hardly any new approaches in explanations of mutual influence of the technological environment parameters in the printing contact which results in lowering the printing process effectiveness while printing with minimal layers of ink-water emulsion. In this article the mutual influence correlations of the printing contact technological environment characteristics are revealed, allowing operating the minimal layers of ink-water emulsion on high-productive machines while normalizing the color reproduction and imprints' quality.

Physical processes of an imprint creation in offset printing

“…Because of the flow of a vector field, one can characterize a phenomenon such as the transfer of ink [12] from the printed form to the imprint. Accordingly, knowing the normative values of the area of the printing element on the printed form, the rate of dot gain, as well as the standard thickness of the ink layer, it is possible to accurately determine the amount of ink required to achieve optimal saturation at this point.…”

The improvement of dampening solution for offset printing

“…The study [7][8][9] presents the dampening fluid transfer process modeling between dampening rollers and film dampening units investigation. The study [9] proposes the method of measuring the dampening fluid for film dampening rollers of the machine, which allows to control the uniformity of the fluid layer for stabilization modes during printing.…”

“…The research described in [5][6][7][8][9][10][11][12][13], indicate the relationship of component composition of the dampening fluid with its feeding regimes and transfer in printing contact. At the same time, compliance of water-ink balance continues to be relevant.…”

Regularities of Stability for Printing Forms of Offset Printing With Dampening in Short Runs

“…However, the printing runs of products are reduced and short-run difficulties arise stabilization process. The paper [1][2][3][4][5][6][7] summarizes recent studies of phenomena printed contact of offset printing. Today the market offers a sufficient number of plate materials having wide range of applications [8,9].…”