a method of controlling a printer using a bluetooth function of a mobile terminal is provided , including forming , when printing is to be performed , a bluetooth communication link between the mobile terminal and a headset and forming a communication link between the headset and the printer ; selecting data to be printed , using the mobile terminal ; setting a print format , using the mobile terminal , transmitting the print format to the headset , transmitting the print format from the headset to the printer , and setting the print format as a print format of the printer ; and transmitting the selected data from the mobile terminal to the headset and printing the data received through the headset with the set format .