Image recording apparatus and controlling method thereof

An image recording apparatus that includes an image expanding unit for executing an expansion process for expanding, into a dot image of each page, recording data of a plurality of pages on which an image recording process is to be executed and for holding the dot image, and that executes the image recording process by jetting ink onto a continuous sheet, which is a conveyed recording medium, from a recording head on the basis of the dot image, comprising:

• a post-processing mechanism having at least a cutting information generating unit for generating cutting information that indicates cutting timing of the continuous sheet, for cutting the continuous sheet at predetermined intervals;
• and
• a continuous sheet conveyance controlling unit for determining whether or not a delay has occurred within an expansion processing time that is identified in advance for the image expanding unit and is needed for the expansion process on the basis of a count value obtained by counting the number of pages of expanded image data held by the expansion process executed by the image expanding unit, and for generating on the continuous sheet an unrecorded portion on which the image recording process is not executed if it is determined that the delay has occurred, wherein
• the continuous sheet conveyance controlling unit generates the unrecorded portion on the continuous sheet in synchronization with the cutting information generated by the cutting information generating unit.