Xerox CX240, CX250 manual Image Quality, Trapping

182 Appendix A– Setting Parameters

Image Quality

The Image quality parameter controls the ability to maintain the same detail and smoothness at different degrees of enlargement. This feature is especially useful when your PostScript file includes several images of different qualities—for example, images that were scanned at different resolutions, were rotated, or were downloaded from the Internet.

1.Select High to improve the quality of images in a job.

Note: When you select High, the processing speed is decreased.

2.In the Enhance area, select the Graphics check box to improve the quality of overlapping vector and image elements.

Trapping

Trapping is a solution that solves misregistration between color separations in both offset and digital printing. Misregistration occurs regardless of the accuracy of the printing device and results in white lines around objects on top of a background (in a knock-out procedure) and also between adjacent colors. Trapping extracts the element or the background in order to create an overlap between them.

1.To set trapping, select Yes.

Notes:

•If you select Yes, the Frame Thickness and Protect Small Text options are activated. You cannot select these options in the PPD file.

•If you select No, trapping incorporated by DTP applications (for example, Photoshop®) are not affected. Creo Full Auto Frame trapping software (FAF) should not be used with application-based trapping. In a PostScript file that already contains trapping from the originating application, it is not necessary to use Spire CX250 color server trapping.

2.In the Frame Thickness box, select the default (0.08mm) for the thickness of the trapping frame, or type the desired value. The thicker the frame, the less chance that white areas appear will between images.