What Does Virtual Printer Mean?

A virtual printer is a printer driver that resembles the functionalities of a physical printer, but is not actually associated with one. Instead, a virtual printer sends its output to a file, normally in PDF format or in other image formats like JPEG, TIFF or PostScript.

Techopedia Explains Virtual Printer

A virtual printer acts similarly to a physical printer in that it transforms an electronic document into a form that can be easily read by the target user or device. For example, it can transform a spreadsheet or a word processing document into PDF or an image to allow a user to view the document without using the original program that created the document, as these formats are more common. A virtual printer can also be used to send documents to a fax server.