An image recording apparatus, such as a copying machine and a printer. The image recording apparatus includes: a reading section for scanning an image on a document and generating image signals corresponding to the image; a memory for storing the image signals; an image formation processing section for forming an image on a transfer sheet according to the image signals; a sheet feeding section for holding the transfer sheet and feeding the transfer sheet to the image formation processing section; a sheet discharging section for discharging the transfer sheet outside the image recording apparatus; and a setting section for selecting one of a one-side copying mode, when only an image on one-side of the document is formed on one-side of the transfer sheet, and a two-side copying mode, when images on both sides of the document are formed on respective sides of the transfer sheet. An overall control section controls the image recording apparatus so as to (i) form an image on the transfer sheet according to the image signals obtained from the reading section when one-side copying mode is selected; and (ii) form an image on the transfer sheet according to the image signals, which are once stored in the memory and then obtained from the memory, when a two-side copying mode is selected.