Another problem is that many vendors are simply unable to release source code for their drivers because of non-disclosure agreements or trade secrets. CUPS is designed to eliminate the printing problem. One common printing system can be used by all UNIX variants to support the printing needs of users. Printer vendors can use its modular filter interface to develop a single driver that supports a wide range of file formats with little or no effort. Internally CUPS uses filter programs that allow a user or application to print many types of files without extra effort.
Some filters convert job files to different formats that the printer can understand.
Others perform page selection and ordering tasks. Backend filters perform the most important task of all - they send the filtered print data to the printer. ESP Print allows you to add a printer with a few mouse clicks, which makes installing new printers a snap. Since ESP Print uses CUPS, all of your applications will work with your printer. We are also working with several printer vendors to license Linux drivers that will be included with their printers like the Microsoft Windows and MacOS drivers.