Xerox DocuColor 12 Printer with Fiery EX12 产品宣传页

Some color printers are commonly referred to as 

 devices. 

They do not use traditional halftone screen patterns and angles. Contone devices are 
capable of varying the intensity of individual dots. 

Even if your color printing is done exclusively on the Color Server, you will encounter 
concepts from offset printing if you use high-end graphics applications. For example, 
color controls in illustration applications, such as Illustrator, are geared toward 
specifying color for offset printing using process and 

. Many applications 

allow you to specify the screening used for each printing plate. 

The ability to print in color can greatly increase the effectiveness of your message, 
whether you are printing a presentation or newsletter, or proofing an ad concept that 
will later be printed on a press. Some potential benefits of using color include:

• Conveying information rapidly by using color cues

• Making use of the emotive aspects of different colors

• Increasing impact and message retention 

Color can also be a source of distraction and discord if it is used poorly. This section 
outlines some tips and concepts to consider as you approach designing color materials.