Technical data

3
3-17 Queues window
Spooling—a PostScript file is saved on the server’s hard disk. The file can come in
packets from the network, or from another place on the server hard disk. Jobs are
added to a queue in the order in which they arrive, and they generally move to another
queue in the same order unless an operator has intervened to change the order.
Rasterizing (RIPping)—PostScript commands are interpreted in the ColorPASS to
allow the copier to print the file the way its originator intended. The result of this
interpretation is a raster file associated with the original PostScript file. In this raster file
(raster image), color data is associated with each dot that can be rendered by the print
engine. The color data tells the print engine whether or not to apply cyan, magenta,
yellow, or black toner to each position on the page.
Printing—transferring the raster image from the server to the print engine at high
speed, freeing up RAM for the next job. While the PostScript file is usually saved to
disk, raster images are held in RAM during and after each print job. However, both
users and operators can request that the ColorPASS save the raster image to disk along
with the PostScript file.
Saving the raster image to disk offers some 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, which means that individual pages of a saved raster file
can be accessed.
Status bars
Jobs actively involved in the three processes (spooling, rasterizing, and printing) are
listed in the status bars that span the Queues window.
Status bars show the filename and user name for the active process, and an indication
of its progress. Each status bar heads the list of jobs that have completed the process.
Thus, beneath the Spool status bar, you see a list of spooled files; beneath the RIP
status bar, you see a list of rasterized (RIPped) files; beneath the Print status bar, you
see a list of jobs that have already been printed.