The effects of applying different levels of printing pressure on quality in offset printing

Abstract

Abstract. In offset printing technique, a sufficiently high contact pressure between blanket and impression cylinders needs to be applied for the proper ink transfer onto printing substrate. The aim of this research is to investigate dependence of various print quality parameters on three printing pressure levels applied, in printing units, during four color heat set web offset printing process on LWC paper. This was examined by measuring various control elements of the prints, in order to obtain quantitative information about standard print quality parameters. Through the evaluation of this important printing factor and relating it to the print quality, it will be possible to find out in which ways and to what extents different printing pressue levels affect offset print quality.