An image data transfer control device includes a first interface, a first and a second memory, a processor, and a second interface. The first interface acquires image data transferred in predetermined units. The first memory stores inclination correction data corresponding to the inclination of a print head, and correction position data indicating a correction position included in at least one divided image line among the predetermined number of divided image lines including each divided image line group. The second memory stores correction target image data at the correction position. The processor selects each divided image line group based on the inclination correction data, and specifies first and second correction target image data. The second interface outputs the second divided image line group including the first correction target image data instead of the second correction target image data.