Patent ID: 6353481
Filing Date: 2002-03-05
Classification: G06K

Abstract:
A method for correcting printing errors in a shuttle type multifunctional apparatus which includes a scanning module reciprocated along a horizontal shaft and a line feeding motor capable of moving documents by a predetermined distance, comprising the steps of:printing, a preset reference pattern upon a correcting mode for correcting printing errors having been set; detecting a number of dots corresponding to the printing errors by comparing a scanned pattern with the reference pattern after scanning the printed reference pattern; calculating a printing error value by using the number of dots corresponding to the printing errors detected in the detecting step and obtaining a correcting value by adding and subtracting the value of the errors to and from a space between adjacent bands; storing the correcting value obtained in the calculating step; and controlling the space between adjacent bands according to the correcting value, wherein the rotational velocity of the line feeding motor is controlled according to the correcting value in the calculating step.