A cutting device, comprising: a guide rail provided extending in a scanning direction opposing medium support means for supporting a target medium; a printer head, provided so as to be movable along the guide rail, for printing an image (A1, A2, B1, B2, N1, N2) and reference marks (T1-T4) on the periphery of the image, by ejecting ink toward the target medium supported by the medium support means; a cutting head, provided so as to be movable along the guide rail, for performing a cutting process on the target medium supported by the medium support means; a medium feeding mechanism for feeding the target medium in a conveying direction perpendicular to the scanning direction; a mark position detection portion, provided so as to be movable along the guide rail, for detecting positions of the reference marks (T1-T4); and a controller set up such that the printer head is controlled to print a plurality of images while feeding the target medium in the conveying direction with the medium feeding mechanism and to print reference marks (T1-T4) on the periphery of the images, the plurality of images are printed from one side to the other side in the conveying direction, wherein the controller has a cutting position setting portion that is set up, based on the positions of the reference marks obtained by the mark position detection portion, to detect a printing position of the image with respect to the reference marks(T1-T4), and to set a cutting process position corresponding with the printing position of the image, wherein the controller is further set up such that the cutting head performs a cutting process in a cutting process position set by the cutting position setting portion, the cutting device being characterized in that the controller is further set up such that the positions of the reference marks (T1-T4) printed on the periphery of an image, of the plural images(A1, A2, B1, B2, N1, N2), printed farthest from the other side in the conveying direction are detected before starting a cutting process, and that a cutting process is performed from the image (N1, N2) printed farthest from the other side to an image (A1, A2) of the plural images(A1, A2, B1, B2, N1, N2) printed farthest from the one side in the conveying direction along said detected reference marks (T1-T4) of each images (A1, A2, B1, B2, N1, N2). a guide rail provided extending in a scanning direction opposing medium support means for supporting a target medium; a printer head, provided so as to be movable along the guide rail, for printing an image (A1, A2, B1, B2, N1, N2) and reference marks (T1-T4) on the periphery of the image, by ejecting ink toward the target medium supported by the medium support means; a cutting head, provided so as to be movable along the guide rail, for performing a cutting process on the target medium supported by the medium support means; a medium feeding mechanism for feeding the target medium in a conveying direction perpendicular to the scanning direction; a mark position detection portion, provided so as to be movable along the guide rail, for detecting positions of the reference marks (T1-T4); and a controller set up such that the printer head is controlled to print a plurality of images while feeding the target medium in the conveying direction with the medium feeding mechanism and to print reference marks (T1-T4) on the periphery of the images, the plurality of images are printed from one side to the other side in the conveying direction, wherein the controller has a cutting position setting portion that is set up, based on the positions of the reference marks obtained by the mark position detection portion, to detect a printing position of the image with respect to the reference marks(T1-T4), and to set a cutting process position corresponding with the printing position of the image, wherein the controller is further set up such that the cutting head performs a cutting process in a cutting process position set by the cutting position setting portion, the cutting device being characterized in that the controller is further set up such that the positions of the reference marks (T1-T4) printed on the periphery of an image, of the plural images(A1, A2, B1, B2, N1, N2), printed farthest from the other side in the conveying direction are detected before starting a cutting process, and that a cutting process is performed from the image (N1, N2) printed farthest from the other side to an image (A1, A2) of the plural images(A1, A2, B1, B2, N1, N2) printed farthest from the one side in the conveying direction along said detected reference marks (T1-T4) of each images (A1, A2, B1, B2, N1, N2).