WIDTH ALIGNMENT CORRECTION DEVICE, PRINTER AND WIDTH ALIGNMENT CORRECTION METHOD

摘要

In a lateral register correcting device 35 having a register correcting mechanism 36 capable of correcting register movement for a web W by printing units 40a, 40b, 40c, and 40d, and a roller pressing mechanism 37 capable of correcting fan out occurring in the web W, a register mark is printed on a front side and a back side of the web W, and there are included: a register correction control unit 71 capable of automatically controlling the register correcting mechanism 36 in real time based on a register correction amount derived by a pair of register cameras 60 for detecting the register mark and a register correction amount deriving unit 70; and a fan out correction control unit 76 capable of automatically controlling the roller pressing mechanism 37 in real time based on a fan out correction amount derived by a pair of fan out cameras 61 for detecting the register mark and a fan out correction amount deriving unit 75.