The Use of the GATF Sheetfed Color Printing Test Kit to Optimize and Control Sheetfed Lithographic Printing

A system of process control for sheetfed lithographic printing is described. The use of the GATF Sheetfed Color Printing Test Kit to troubleshoot, optimize and characterize a printing system is also addressed. Various tests of color reproduction are suggested, and a procedure for production control is given. The sequence of optimization begins with a diagnostic phase where the mechanical transfer properties of the press are examined. This is followed by tests of the capacity and variability of the printing system. The color reproduction characteristics of the press system are measured next. The color scanner and proofing system are then adjusted to the conditions of the printing system. Finally the production control aim-points are established. The sequence of optimization begins with a diagnostic phase where the mechanical transfer properties of the press are examined. This is followed by tests of the capacity and variability of the printing system. The color reproduction characteristics of the press system are measured next. The color scanner and proofing system are then adjusted to the conditions of the printing system. Finally the production control aim-points are established. Conscientious use of the GATF Color Printing Test Kit can lead to a higher quality, more consistent printing operation. Printing presses in a plant can be compared, and various printing materials -- such as inks, papers, dampening solutions, blankets, and plates -- can be evaluated. A regular program of testing will show changes in print quality that occur over time. The cumulative tests results form a valuable data base of in-house printing conditions.