To provide a transfer paper conveyance system capable of automatically printing a plurality of document images on the same face of a transfer paper and printing images on both faces of the transfer paper while observing finish images every time.

This transfer paper conveyance system is constituted in such a way that when a transfer paper is transferred and is conveyed to a paper discharge means and a user takes out the transfer paper form the paper discharge means or inputs an input to prevent the transfer paper from being conveyed into a paper resupply roller again, the transfer paper is automatically conveyed to a steady condition from a paper feeding device, and in the case of the condition opposite to the above, the transferred transfer paper is conveyed to a transfer position of a photosensitive member from the paper discharge means again to obtain overlapped images and images printed on both faces of the transfer paper. The transfer paper on which picture image is transferred just before discharge is discharged on a paper discharge tray of the paper discharge means by facing upward.