ADJUSTMENT OF DISPLACEMENT OF RECORDING POSITION DURING PRINTING USING HEAD IDENTIFICATION INFORMATION ABOUT PRINT HEAD UNIT

摘要

During printing, print head characteristics are taken into consideration to alleviate positional deviation of dots in a main scanning direction and improve image quality. The print head unit is provided with readable head identification information that is set in accordance with characteristics relating to positional deviation of dots to be formed by the print head in a main scanning direction. In accordance with this head identification information, adjustment values are determined for reducing printing positional deviation in the main scanning direction, and these adjustment values are used to adjust the position of dots in the main scanning direction.