Printer, a control method therefor, and a control method storage medium

A control method for a printer in communication with a host device for printing on a print medium based on print data and a print command received from the host device, comprising the steps of:

• (a) interpreting the print command which indicates a predetermined side of the print medium side for printing;
• (b) detecting a side of the print medium inserted in the printer which faces a predetermined direction;
• and
• (c) printing the print data when the predetermined side of the print medium side interpreted in step (a) and the side of the print medium detected by step (b) are the same.

A data medium for a computer executable program for controlling method for a printer that is in communication with a host device for printing on a print medium based on print data and a print command received from the host device, said control method comprising the steps of:

• (a) interpreting the print command which indicates a predetermined side of the print medium side for printing;
• (b) detecting a side of the print medium inserted in the printer which faces a predetermined direction;
• and
• (c) printing the print data when the predetermined side of the print medium side interpreted in step (a) and the side of the print medium detected by step (b) are the same.

A printer in communication with a host device for printing on a print medium based on print data and a print command received from the host device, comprising:

• print command interpreter means for interpreting the print command which indicates a predetermined side of the print medium to be printed on by said printer;
• inserted side detecting means for detecting a side of the print medium inserted in said printer which faces a predetermined direction;
• and
• control means for controlling said printer to print the print data when the predetermined side interpreted by said print command interpreter means is the same as the side of the print medium detected by said inserted side detecting means which faces the predetermined direction.