| 摘要 |
PROBLEM TO BE SOLVED: To eliminate print of a highly closest image with small color drift easily without necessity of registering even in multicolor printing by constituting a color printer by a press plate automatic mounting means on a plate cylinder, plate making pat of a press plate at each color, UV ink supply means of (n) colors, impression cylinder for delivering a print sheet after (n) times rotating, and a UV lamp. SOLUTION: A press plate 18 of a waterless lithographic plate is arranged on each part obtained by dividing an outer periphery of a plate cylinder 17 into (n) parts. A press plate supply means 22 formed of a plate supply unit 21 for holding them is provided, and an end of the unit 21 is approached to the plate 17 to constitute an automatic plate supply means 23. And, a plate making part 27 made of a laser emitting unit 28 is provided on an upper part of the cylinder 17. And, (n)-color UV ink supply means 31 are provided separably at a press plate 18 at a downstream of the part 27, and controlled by a controller 34 via a solenoid 33. Further, an impression cylinder 38 free-rotating with the cylinder 17 and having a diameter of 1/n of that of the cylinder 17 is provided under the cylinder 17. Then, one print sheet 39 is wound and held, and rotated n times during one revolution of the cylinder 17, and a UV lamp 43 is provided at a lower part of the cylinder 38. |
