Xerox Phaser EX7750 文件

To understand job flow through the EX7750, it is helpful to consider the three main 
stages of printing.

—When a job file is sent over the network by a remote user or imported from 

disk, it arrives at the EX7750 and spools to a location on the hard disk drive. After 
spooling completely, the job is held on the hard disk drive, where it awaits further 
instructions from the operator. 

—When the operator releases the job file, it undergoes raster 

image processing (RIPping) at the EX7750. During processing, the job file is 
interpreted as a raster image. This raster image contains the data required by the 
printer to print the job the way its originator intended. In the raster image, data 
associated with each dot is rendered on the printer. The raster data tells the printer 
whether or not to apply toner to each position on the page.

—After processing, the job typically moves on to the printing stage. During 

this stage, the raster image associated with the job is transferred from the EX7750 to 
the printer at a high speed. The raster image is then rendered onto paper, and the job is 
printed.

While original job files are saved to the EX7750 hard disk, raster images are typically 
deleted after printing. The operator can issue commands to save and hold the raster 
image on the hard disk drive along with the original job file. Saving the raster image to 
the hard disk drive offers two advantages: raster files are already processed, so they print 
quickly, and each part of the raster file is still identified with a page in the original 
document, so you can access individual pages of a saved raster file.