Printing position detection and correction method

摘要

A printing position detection and correction method for a printing device, wherein when a pattern or letters are continuously and suitably printed onto a strip-shaped printed article by means of a printing device to form a print portion, a matchmark for position determination of printing is formed beforehand at a proper position around the print portion to be printed, and at first a regular positional relationship when the print portion is printed at a regular position is registered as data beforehand, next a CCD camera or a sensor is installed at a proper position through which the strip-shaped printed article passes after printing, the matchmark formed around the print portion being monitored by means of the CCD camera or the sensor so as to detect the regular positional relationship of the matchmark, and data obtained thereby are compared with the regular positional relationship of the matchmark. Correction instructions may or may not then be given to a downstream step printed strip processing device, depending on whether the error is within a range of setting of the standard, or outside the range of setting of the standard, so as to correct and adjust accordingly the positional deviation corresponding to the error.