1. An image-recording apparatus which divides a complete image larger in width than a recording-medium into a plurality of images and, records the divided images on a plurality of recording-media, comprising: image recording assembly that has a recording-head to record an image on the recording-medium, and a recording-medium-carrying mechanism to carry the recording-medium relatively to the recording-head; and a control section that has an image-processing section to subject image data to image processing, and controls the image recording assembly, wherein the image-processing section divides the image data indicative of the complete image into a plurality of image data pieces indicative of divided images, detects two adjoining divided-images that individually have a joint portion and adjoin each other at the respective joint portions, in the divided images indicated by the divided image data pieces and rotates one of the adjoining divided-images so as to make a recording direction of one of the adjoining divided-images opposite to a recording direction of the other adjoining divided-image, the control section controls the image recording assembly so that a recording medium carries in one direction during recording all divided-images, the divided images are recorded on the respective recording-media one by one to form a plurality of output images, and the plurality of output images configure one complete image.