Xerox DocuColor 12 Printer with Fiery X12 产品宣传页

The following sections provide tips on how to create image files that produce the 
highest possible print quality while minimizing the processing time and disk space they 
require.

While a 72 ppi raster image appears sharp on a monitor, the same image would likely 
appear pixelated when printed to the Fiery. Color print devices are capable of much 
greater detail than monitors, and require correspondingly higher resolution image files. 
However, high-resolution files can be large, and therefore cumbersome to transmit over 
a network, process for printing, store on disk, and edit. 

Beyond a certain threshold, a higher image resolution greatly increases file size while 
having a minimal effect on output quality. The optimal image resolution depends on 
the resolution of the final print device. Aim for the resolution that optimizes both file 
size and output quality.

The resolution of a raster image, along with its bit depth and physical dimensions, 
determine its file size. The following table shows the file sizes of color raster images at 
different dimensions and resolutions.

3" 

x 

4"

0.4/0.5 MB

0.8/1.0 MB

1.4/1.8 MB

5.5/7.3 MB

12.4/16.5 MB

5" 

x

 7"

1.0/1.3 MB

2.3/3.0 MB

4.0/5.3 MB

16.0/21.4 MB

36.1/48.1 MB

8.5" 

x

 11"

2.7/3.6 MB

6.0/8.0 MB

10.7/14.3 MB

42.8/57.1 MB

96.4/128.5 MB

11" 

x

 17"

5.4/7.1 MB

12.0/16.1 MB

21.4/28.5 MB

85.6/114.1 MB

192.7/256.9 MB