Data printing system with printing position correction function

A system for printing print data on a prescribed record form, the form including at both ends a plurality of fixed detection markers each having a predetermined shape, the form being inserted into and removed from a printing device a plurality of times, comprising:

• printing means for printing the print data on the prescribed record form, said printing means being moveable in both a longitudinal direction and a width direction relative to the record form;
• feed control means for feeding the record form automatically in a prescribed printing position direction, said feed control means stopping further feeding of the record form once the record from has reached a prescribed printing position;
• detection means for detecting the position of said fixed detection markers on the record form to determine, in response to the predetermined shape of said fixed detection markers, any angular misalignment of the record form relative to said prescribed printing position each time the record form is fed into the printing device by said feed control means;
• print data computation processing means coupled to said detection means for computing, based upon the angular misalignment detected by said detecting means, position data corresponding to a corrected printing position for the record form;
• and
• print control means for controlling the printing means in said longitudinal and width directions in response to said position data to print the print data at the corrected printing position.