METHOD FOR PRINTING WITH OFFSET PRINTING MACHINE, AND OFFSET PRINTING MACHINE

摘要

This invention provides a method for printing with an offset printing machine, and an offset printing machine. A low-whiteness printing sheet such as a newsprint paper is primer treated with a primer treatment agent, and printing quality is improved while avoiding primer treatment agent-derived clouding of a printing ink. A primer treatment agent such as a low-whiteness improving agent is supplied onto a printing face of a printing sheet. The primer treatment agent supplied onto the printing face is then dried, and offset printing is carried out on the printing sheet with a printing machine.