Provided are a blade device equipped with a blade member which can accurately adjust pressing force due to a blade member, and a printing machine and a coating device equipped with the blade device.

A blade device 40 according to the present invention has: a blade member 41 contacting with a plate roll 10 to which coating material is to be applied; an upper holder 43 contacting with the blade member from one surface side of the blade member; a lower holder 44 contacting with the blade member from another surface side of the blade member; a tube 42 contacting with the blade member and configured to expand and contract by pressure of fluid; and a tube positioning part 43a which is provided on the upper holder and positions the tube closer to the roller, in a direction in which the blade member extends, than a tip end of the lower holder is The tube adjusts a pressing force, of the tip end of the blade member, against the roller by being expanded or contracted while being held by the tube positioning part and the blade member.

Recess printing units are usable for printing on a substrate and using associated methods for operation. The recess printing units comprise an intaglio printing cylinder, which provides an image-forming pattern of recesses on its circumference; and an inking unit for applying ink to the pattern of recesses that are provided on the intaglio printing cylinder. The inking unit comprises a first inking unit cylinder which has, in a region of its lateral surface, recesses corresponding to the recesses in the intaglio printing cylinder and to which recesses ink can be supplied by an ink application device in the region of an application point lying on the circumference of the first inking unit cylinder. A second inking unit cylinder cooperates with the first inking unit cylinder and has, in a region of the lateral surface of the second inking unit cylinder, elevations corresponding to recesses in the intaglio printing cylinder or raised regions corresponding to regions of the image-forming pattern of recesses on the intaglio printing cylinder, which regions comprise recesses. The ink application device also comprises, on at least a downstream side of the application point, with respect to the operating direction of rotation of the inking unit cylinder comprising the recesses, a retaining device in the form of a doctor blade or an ink knife. The second inking unit cylinder comprises, on a lateral surface thereof, elevations corresponding to engraving on the intaglio printing cylinder.

Recess printing units are usable for printing on a substrate and using associated methods for operation. The recess printing units comprise an intaglio printing cylinder, which provides an image-forming pattern of recesses on its circumference; and an inking unit for applying ink to the pattern of recesses that are provided on the intaglio printing cylinder. The inking unit comprises a first inking unit cylinder which has, in a region of its lateral surface, recesses corresponding to the recesses in the intaglio printing cylinder and to which recesses ink can be supplied by an ink application device in the region of an application point lying on the circumference of the first inking unit cylinder. A second inking unit cylinder cooperates with the first inking unit cylinder and has, in a region of the lateral surface of the second inking unit cylinder, elevations corresponding to recesses in the intaglio printing cylinder or raised regions corresponding to regions of the image-forming pattern of recesses on the intaglio printing cylinder, which regions comprise recesses. The ink application device also comprises, on at least a downstream side of the application point, with respect to the operating direction of rotation of the inking unit cylinder comprising the recesses, a retaining device in the form of a doctor blade or an ink knife. The second inking unit cylinder comprises, on a lateral surface thereof, elevations corresponding to engraving on the intaglio printing cylinder.

Provided are a blade device equipped with a blade member which can accurately adjust pressing force due to a blade member, and a printing machine and a coating device equipped with the blade device. A blade device according to the present invention has: a blade member contacting with a plate roll to which coating material is to be applied; an upper holder contacting with the blade member from one surface side of the blade member; a lower holder contacting with the blade member from another surface side of the blade member; a tube contacting with the blade member and configured to expand and contract by pressure of fluid; and a tube positioning part which is provided on the upper holder and positions the tube closer to the roller, in a direction in which the blade member extends, than a tip end of the lower holder is. The tube adjusts a pressing force, of the tip end of the blade member, against the roller by being expanded or contracted while being held by the tube positioning part and the blade member.