Patent ID: 6905186

Claim:
An image recording apparatus comprising: a recording head for recording an image, said recording head having plural recording elements arranged along a first direction, said recording head moving relatively to a recording material to record a test pattern in a margin of said image; detection means for detecting said recorded test pattern; a test pattern analyzer for analyzing signals from said detection means, said test pattern analyzer calculating deviation in relative movement or relative speed of said recording material or said recording head; and a correction means for correcting said relative movement or said relative speed on the basis of said deviation calculated by said test pattern analyzer, wherein said test pattern includes a first check pattern, said first check pattern comprises plural first check lines recorded by driving the same recording device at predetermined time intervals on the basis of predetermined drive signals, while said recording material is relatively moved to said recording head, and wherein said test pattern analyzer measures distance between said first check lines to determine deviation in said relative movement or said relative speed.