Server Spooler

The components below the print router and above the print device are collectively called the spooler. Each component of the spooler uses the services of the component directly below it. The spooler is a series of dynamic-link libraries (DLLs) consolidated in a single architecture, providing smooth background printing by using background thread processing. This means that the spooler passes data to the printer only when the printer is ready to receive more data.