A21 -- Printing Plants (I-P)

This chapter outlines air-conditioning requirements for key printing operations. Air conditioning of printing plants can provide controlled, uniform air moisture content and temperature in working spaces. Paper, the principal material used in printing, is hygroscopic and very sensitive to variations in the humidity of the surrounding air. Printing problems caused by paper expansion and contraction can be avoided by controlling the moisture content throughout the manufacture and printing of the paper. Design Criteria Control of Paper Moisture Content Platemaking Relief Printing Lithography Rotogravure Other Plant Functions