A print controlling device for transmitting printer controlling information to a printer connected thereto is configured such that print setting data is generated based on desired print settings which may include operational control setting data in accordance with a setting by a user. The print controlling device is capable of generating print data including the print setting data as header information thereof, and converting the print data to the printer controlling information. When the print data is converted, it is judged whether the print setting data included in the print data contains the operational control setting. If the print setting data includes the operational control setting, job controlling information which corresponds to the operational control setting is transmitted to the printer.