Printer, printing method, and printing system

A printing method comprising:

• receiving print data including printing position information indicating a printing position;
• conveying a recording medium having first detection marks and second detection marks;
• detecting the first detection marks and second detection marks of the conveyed recording medium;
• calculating the distance between detection marks based on the result of detecting the first detection marks and second detection marks;
• correcting the printing position information contained in the print data based on the calculated distance between detection marks and a previously stored distance between the first detection marks and second detection marks;
• and
• printing based on the corrected printing position information.

A printing system comprising:

• a control device including a transmission unit that sends print data containing printing position information indicating a position for printing;
• and
• a printer including a storage unit that stores a recording medium having first detection marks and second detection marks disposed at a specific interval;
• a conveyance unit that conveys the recording medium stored in the storage unit;
• a detection unit that detects the first detection marks and second detection marks of the recording medium conveyed by the conveyance unit;
• a computing unit that calculates the distance between detection marks based on the first detection marks and second detection marks detected by the detection unit;
• a memory unit that stores a predetermined distance between the first detection marks and second detection marks;
• a reception unit that receives print data including printing position information indicating a printing position;
• a print control unit that corrects the printing position information contained in the print data based on the distance between detection marks calculated by the computing unit and the distance stored in the memory unit;
• and
• a print unit that prints based on the corrected printing position information output by the print control unit.