Patent ID: 9108401
Filing Date: 2015-08-18
Classification: B41J

Abstract:
1. An image recording apparatus for recording an image onto a recording medium, comprising: a plurality of heads arranged in a width direction of a recording medium or arranged in a direction crossing a direction perpendicular to said width direction, for ejecting droplets of ink; a moving mechanism for moving said recording medium relatively with respect to said plurality of heads in said direction perpendicular to said width direction; and a control part for controlling said plurality of heads and said moving mechanism to record an image onto said recording medium by one relative movement of said recording medium with respect to said plurality of heads, wherein each of said plurality of heads is individually changeable to a new head, and said control part comprises: a storage part for storing a plurality of pieces of conversion information corresponding to a plurality of types of recording media and said plurality of heads, respectively, each piece of conversion information corresponding to one type of recording media and one head, each piece of conversion information indicating a relation between input pixel values indicated by input image data and values used for generation of signals to be inputted to a corresponding head; a conversion part for converting pixel values of input image data by using pieces of conversion information associated with said plurality of heads and one type of recording medium out of said plurality of types of recording media; a reference image recording control part for recording a plurality of reference images corresponding to a plurality of input pixel values, respectively, onto a representative recording medium by at least one changed head out of said plurality of heads; a changed head information receiving part for receiving changed head information indicating said changed head among said plurality of heads; and a conversion information updating part to which correction amounts on pieces of conversion information corresponding to said changed head are inputted, said correction amounts being determined in accordance with said plurality of reference images which are recorded, said conversion information updating part updating said pieces of conversion information on said representative recording medium and another type of recording medium on the basis of said changed head information and said correction amounts.