A printed object management apparatus including: a first detector configured to detect an overall pattern of a printed object; a measuring device configured to measure an ink density of the printed object; a second detector configured to detect a register mark (9c, 9d) of the printed object; a print quality-inspecting unit 10 configured to inspect quality of the overall pattern of the printed object based on data received from the first detector; a print density controlling unit 10 configured to control an ink supply amount based on data received from the measuring device such that the ink density becomes equal to a reference density; and an inter-color registering unit configured to align patterns of various colors with one another based on data received from the second detector; one scanning head supporting the first detector, the measuring device, and the second detector; a first driving device configured to move the scanning head in the left-right direction; a supporting body supporting the measuring device and the second detector; and a second driving device configured to move the supporting body in the top-bottom direction in the scanning head, characterized by a controller configured to control the first driving device, the second driving device, the first detector, the measuring device, and the second detector such that, when the scanning head is moved from one side to the other side in the left-right direction, the first detector detects the overall pattern of the printed object and the measuring device measures the ink density of the printed object and, when the scanning head is moved back from the other side to the one side in the left-right direction, the second detector detects the register mark, wherein the first detector is fixedly supported on the scanning head. a first detector configured to detect an overall pattern of a printed object; a measuring device configured to measure an ink density of the printed object; a second detector configured to detect a register mark (9c, 9d) of the printed object; a print quality-inspecting unit 10 configured to inspect quality of the overall pattern of the printed object based on data received from the first detector; a print density controlling unit 10 configured to control an ink supply amount based on data received from the measuring device such that the ink density becomes equal to a reference density; and an inter-color registering unit configured to align patterns of various colors with one another based on data received from the second detector; one scanning head supporting the first detector, the measuring device, and the second detector; a first driving device configured to move the scanning head in the left-right direction; a supporting body supporting the measuring device and the second detector; and a second driving device configured to move the supporting body in the top-bottom direction in the scanning head, characterized by a controller configured to control the first driving device, the second driving device, the first detector, the measuring device, and the second detector such that, when the scanning head is moved from one side to the other side in the left-right direction, the first detector detects the overall pattern of the printed object and the measuring device measures the ink density of the printed object and, when the scanning head is moved back from the other side to the one side in the left-right direction, the second detector detects the register mark, wherein the first detector is fixedly supported on the scanning head.