Print control device, print control method, and non-transitory computer-readable storage medium storing print control program which converts and generates second printing data based on custom setting value

Provided is a personal computer which is communicatively coupled to a printer, the personal computer including: an OS that has a display function of displaying a standard print setting screen, and a print function; a server section that causes the printer to be recognized by the print function of the OS, acquires standard print data (DPN) output by the print function of the OS, converts the standard print data into custom print data, and transmits the custom print data to the printer; and a custom print setting section that, when a setting for the standard print setting screen is selected, displays a second print setting screen, and that, when a custom setting value of a custom setting item is set, transmits the custom setting value to the printer, in which the server section generates the custom print data based on the custom setting value.