Patent ID: 6834927
Filing Date: 2004-12-28
Classification: B41J

Abstract:
An image correcting method for an ink jet recording apparatus for recording an image by ejecting ink onto a recording material using a recording head having an array of a plurality of nozzles for ejecting the ink, said method comprising the steps of:an outputting step of outputting at least two kinds of uniform patterns for detection of a recording property of a recording head; a measuring step of measuring a density distribution of the patterns outputted by said outputting step; a calculation step of calculating, for each of the kinds of patterns, data for correction for respective one of said plurality of nozzles on the basis of a result of said measuring step: an image correcting step of comparing data corresponding to said at least two kinds of patterns, classifying states of said plurality of nozzles, and correcting images corresponding to respective ones of said plurality of nozzles, wherein said correcting step effects correction processes which are different from depending on the classification.