A CDE Definition
A simulated printer. If a program is ready to print, but all printers are busy, the printing subsystem in the operating system transfers the printer output to disk and keeps it there until a printer becomes available. See print spooler.
Another use of a virtual printer is to analyze printer output before printing it. For example, if printer output is sent to a virtual printer from GreenPrint Technologies (www.printgreener.com) instead of the real printer, GreenPrint ensures that the last page does not print blank or with only a couple lines. It can also be used to preview the document and delete unwanted pages.
Software that manages sending jobs to the printer. When an application prints a document, the formatted output is stored on disk, and the print spooler feeds the print images to the printer in the background at slower printing speeds. Storing the print jobs on disk allows multiple printing requests to be queued while the user continues printing from the same or other application without waiting for the current document to be printed. See spooling.
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