An image-forming device comprising: an image-reading unit that is arranged to read an image formed on an original document; a data-reading unit arranged so as, if the original document has a storing member, to read the data stored in the storing member; a duplication-performing unit (21, 22) that is arranged to perform a plurality of duplication processes including at least an image/data-duplication process in which the duplication-performing unit forms the read image on a first recording medium having a storing member and writes the read data to the storing member of the first recording medium, and a data-duplication process in which the duplication-performing unit (21, 22) writes the read data to the storing member of the first recording medium without forming the read image on the first recording medium; a receiving unit that is arranged to receive an image/data-duplication instruction and a data-duplication instruction; and a controlling unit that is arranged to control the duplication-performing unit to perform the image/data-duplication process if the receiving unit receives the image/data-duplication instruction, and to control the duplication-performing unit to perform the data-duplication process if the receiving unit receives the data-duplication instruction, the image-forming device being characterised in that: the plurality of duplication processes performable by the duplication-performing unit (21, 22) further includes an image-duplication process in which the duplication-performing unit (21, 22) forms the read image on a second recording medium not having a storing member, wherein the receiving unit further is arranged to receive an image-duplication instruction; wherein the image-forming device further includes a user interface (M1, M2) whereby a user may enter selected ones of said image/data-duplication, data-duplication and image-duplication instructions for input to said receiving unit; wherein the controlling unit is arranged to control the duplication-performing unit (21, 22) to perform the image-duplication process if the receiving unit receives the image-duplication instruction and wherein the image/data-duplication instruction, the data-duplication instruction, and the image-duplication instruction further indicate the number of the duplicates to be performed by the image/data-duplication process, the number of the duplicates to be performed by the data-duplication process, and the number of the duplicates to be performed by the image-duplication process, respectively to be performed in a single duplication control process for each original document. an image-reading unit that is arranged to read an image formed on an original document; a data-reading unit arranged so as, if the original document has a storing member, to read the data stored in the storing member; a duplication-performing unit (21, 22) that is arranged to perform a plurality of duplication processes including at least an image/data-duplication process in which the duplication-performing unit forms the read image on a first recording medium having a storing member and writes the read data to the storing member of the first recording medium, and a data-duplication process in which the duplication-performing unit (21, 22) writes the read data to the storing member of the first recording medium without forming the read image on the first recording medium; a receiving unit that is arranged to receive an image/data-duplication instruction and a data-duplication instruction; and a controlling unit that is arranged to control the duplication-performing unit to perform the image/data-duplication process if the receiving unit receives the image/data-duplication instruction, and to control the duplication-performing unit to perform the data-duplication process if the receiving unit receives the data-duplication instruction, the plurality of duplication processes performable by the duplication-performing unit (21, 22) further includes an image-duplication process in which the duplication-performing unit (21, 22) forms the read image on a second recording medium not having a storing member, wherein the receiving unit further is arranged to receive an image-duplication instruction; wherein the image-forming device further includes a user interface (M1, M2) whereby a user may enter selected ones of said image/data-duplication, data-duplication and image-duplication instructions for input to said receiving unit; wherein the controlling unit is arranged to control the duplication-performing unit (21, 22) to perform the image-duplication process if the receiving unit receives the image-duplication instruction and wherein the image/data-duplication instruction, the data-duplication instruction, and the image-duplication instruction further indicate the number of the duplicates to be performed by the image/data-duplication process, the number of the duplicates to be performed by the data-duplication process, and the number of the duplicates to be performed by the image-duplication process, respectively to be performed in a single duplication control process for each original document.