Printer and network print system

A network print system in which a printer and a terminal device are connected via a network,

• the printer comprising:
• a first sending unit which sends, in accordance with a test print instruction of a predetermined document from the terminal device, one or a plurality of print parameters, of a predetermined number of print parameters of the predetermined document, to the terminal device;
• a first receiving unit which receives the print parameter or the plurality of print parameters sent back from the terminal device;
• a print instruction unit which instructs print of the predetermined document in accordance with the predetermined number of print parameters on which the print parameter or the plurality of print parameters sent back from the terminal device are reflected;
• and
• a printing unit which prints the predetermined document in accordance with the predetermined number of print parameters on which the print parameter or the plurality of print parameters are reflected,
• the terminal device comprising:
• a second sending unit which sends the test print instruction of the predetermined document to the printer and which, in response to receiving of the print parameter or the plurality of print parameters from the printer, sends back the print parameter or the plurality of print parameters to the printer;
• and
• a second receiving unit which receives the print parameter or the plurality of print parameters from the printer.