Comparison of two processless offset printing plates

<p>This paper will compare two process-less offset plates for their imaging and on-press behavior. Several tests will be</p> <p>performed to evaluate the difference between the two plates. One plate is supposed to replace the other. The newer</p> <p>processless plate promises that the dot can be read directly on the plate after imaging. This will be tested as well.</p> <p>Imaging and press parameters will remain the same for this project to understand better that the newer processless</p> <p>plate can be exchanged directly without any modifications to the current workflow. The test will be carried out on</p> <p>the same coated paper with the same inks. The older set of plates will be used to establish proper printing conditions</p> <p>and printed solid ink densities. Once this has been done, the plates will be changed. After printing, approximately</p> <p>500 sheets test sheets will be pulled from delivery and evaluated for the parameters listed below.</p> <p>A test form will be created to measure the following parameters: printed solid ink density, tone values, tone value</p> <p>increases, print contrast, reproduction capabilities of fine lines regular and reverse, small type reproduction</p> <p>capabilities regular and reverse, and color gamut. It is expected that there will be minimal differences in print quality</p> <p>between the two processless plates.</p>