Xerox CX250 User Manual

188

Appendix A– Setting Parameters

Destination Profile

¾

Select the required profile. There is one predefined Spire CX250 color 
server profile, 

Screening

converts Continuous-Tone (CT) and Line-Work (LW) images 

into information (halftone dots) that can be printed. The human eye 
“smooths out” this information, which seems visually consistent with the 
original picture. Thus, the more dots per inch, the more natural the image 
appears. 

The Spire CX250 color server supports line screening. Screening is 
achieved by printing lines in an evenly-spaced pattern. The distance 
between screen lines is fixed, and the line thickness varies, depending on 
the intensity of color required for the job. 

Using screening, printers can work with even amounts of toner and still 
produce a wide range of colors. The darker the color, the thicker the line. 
In this manner, screens give the appearance of different toner quantities 
printed in a certain area.

The Spire CX250 color server currently supports a line screen of 200 lpi 
(

 is the default setting). The screen of each separation is printed at a 

different angle.

Calibration

The purpose of color calibration is to achieve a consistent level of color 
quality. Calibration corrects printer colors by measuring a color density 
chart. 

The Spire CX250 color server calibration tool enables you to create 
calibration tables, either through an automatic process or by editing an 
existing calibration table. The available calibration options are 

, 

, and 

.

The 

 parameter enables you to select the required calibration 

table for the job.

For more information about calibration tables, see Calibration Overview on 
page 108.