Hence, it has been desired to perform highly accurate quality inspection on the previous printing by use of appropriate equipment.
The reality, however, is that there is no space to install an inspection device in double-sided offset printing presses that perform bank-note printing, for example.
It is preferable to mount an inspection device on a printing press that performs the previous printing so that a single printing press can perform both the previous printing and quality inspection thereof. Thus, it is necessary to inspect this non-intaglio-printing surface before proceeding to the number printing at the final step. Here, prior to the intaglio printing, the other surface (non-intaglio-printing surface) of the sheet opposite to the surface subjected to the intaglio printing has been subjected to previous printing such as offset printing in the case of printing a bank note, a security or the like, for example. Meanwhile, the intaglio printing press disclosed in Patent Literature 1 is the one that includes an inspection device for evaluating the printing quality of a surface subjected to intaglio printing after the intaglio printing is performed. Japanese Patent Application Publication No. Patent Literature 1, for example, discloses an intaglio printing press in which a line camera and illuminating units for inspecting a sheet are provided above an impression cylinder of an intaglio printing device within a region which is downstream, in the rotational direction of the impression cylinder, of a position where the impression cylinder is in contact with a set of intaglio printing plates of a plate cylinder but is upstream, in the rotational direction of the impression cylinder, of a position where a sheet is transferred from the impression cylinder to a delivery cylinder of a sheet delivering device. Moreover, in general, the printing process goes through an inspection step after the intaglio printing and then proceeds to the number printing at the final step. BACKGROUND ARTĪ basic printing process for bank notes, securities, and the like is formed of offset printing, intaglio printing, and number printing in the mentioned order. The present invention relates to an intaglio printing press capable of performing highly accurate quality inspection on previous printing by use of appropriate equipment. The intaglio printing press according to claim 1, wherein the sheet delivering device includes: a normal-sheet stacking device to stack the sheet determined as normal as a result of the inspection by any one of the first inspection device and the second inspection device a defective-sheet stacking device to stack the sheet determined as defective as a result of the inspection by any one of the first inspection device and the second inspection device and a switching device configured to switch the destination to which the sheet is delivered. The intaglio printing press according to claim 3, wherein the second inspection device is disposed in such away as to face the impression cylinder of the intaglio printing device.ĥ.
The intaglio printing press according to claim 1, wherein the intaglio printing device includes: an impression cylinder configured to hold and transport the sheet and an intaglio cylinder being in contact with the impression cylinder and configured to perform the intaglio printing on the other surface of the sheet transported on the impression cylinder, and the first inspection device is disposed in such a way as to face a transport cylinder arranged upstream of the impression cylinder in a transport direction of the sheet and configured to transport the sheet while holding the sheet with the one surface thereof facing outside.Ĥ. The intaglio printing press according to claim 1, wherein the first inspection device is configured to inspect one surface of the sheet opposite to a surface thereof to be subjected to the intaglio printing by the intaglio printing device, and the intaglio printing press further includes a second inspection device configured to inspect the other surface of the sheet subjected to the intaglio printing by the intaglio printing device.ģ. An intaglio printing press comprising: a sheet feeding device an intaglio printing device and a sheet delivering device, the intaglio printing press being configured to perform intaglio printing on a sheet having been subjected to printing in a previous step, wherein the intaglio printing press includes a first inspection device provided between the sheet feeding device and the intaglio printing device and configured to inspect printing quality of the sheet having been subjected to the printing in the previous step.Ģ.