摘要:
A stopper for assuredly preventing shifting of a cylindrical printing plate mounted on a plate cylinder is provided. A plate cylinder 1 has a plate-mounting surface 12 on which a cylindrical printing plate 3 is fitted from the front end side and mounted. A front stopper 4 is provided on the end portion of the front end side. The front stopper 4 is configured so as to be able to switch between a protruding orientation in which at least a portion of the stopper is positioned so as to protrude to the outside of the plate-mounting surface 12 in the radial direction and a retracted orientation in which the entire stopper is positioned to the inside of the plate-mounting surface 12 in the radial direction.
摘要:
The printing apparatus is provided with two inkjet heads that eject ink of the same color as in a first cyan inkjet head (20C1) and a second cyan inkjet head (20C2). The first cyan inkjet head (20C1) and the second cyan inkjet head (20C2) are disposed so that the respective positions in the conveyance direction of the can (10) differ from each other and are disposed so that the positions in the axial direction of the can (10) differ from each other. A first magenta inkjet head (20M1) for ejecting magenta ink is provided at a position adjacent to the second cyan inkjet head (20C2) in the axial direction of the can (10).
摘要:
A printing device (1) is provided with: a can body conveying mechanism (100) for sequentially conveying can bodies (10); and a can body moving mechanism (200) for moving the can body (10) while forming an image onto the outer circumferential surface of the can body (10) conveyed by the can body conveying mechanism (100). The can body moving mechanism (200) is provided with a rotating member (210) formed in a disc shape and rotating in a clockwise direction in the drawing. The can body moving mechanism (200) is also provided with plural image forming units (220) provided on the rotating member (210) and forming an image onto the outer circumferential surface of the can body (10) while moving the can body (10) . The image forming units (220) are each provided with plural ink ejection devices for ejecting ink onto the outer circumferential surface of the can body (10). This provides an image forming device capable of increasing the number of can bodies on each of which an image can be formed per unit time.
摘要:
In the elongation processing shown in A, the height of the panel 11 is maintained by supporting the panel 11 from the bottom side, the curled portion 13 is held from the top side and the bottom side, and the movement of the curled portion 13 is restricted in both of the upper direction and the lateral direction. In the elongation processing, external force is applied to the bottom part of the annular groove 12 in the downward direction in this state, and the bottom part of the annular groove 12 is pressed down. Accordingly, the panel 11 is pulled toward the outer direction in the diameter direction of the panel 11, and the tension is generated in the panel 11 as shown by the black arrow, which is intended to reduce distortion of a can lid while reducing formation of shapes in the can lid.
摘要:
A tab main body section (520) is provided with first to third main body section slits (731-733) which are provided so as to penetrate through the tab main body section (520). The first to third main body section slits (731-733) are formed in a circular arc shape so as to extend along the outer peripheral edge of an insertion hole (540) formed in a circular shape. The first main body section slit (731) is provided between the insertion opening (540) and a first edge section (501) of a tab (500). The second main body section slit (732) and the third main body section slit (733) each have one end section (751) and the other end section (752). The one end section (751) is located closer to a second edge section (502) of the tab (500) than the insertion hole (540). As a result of this configuration, a can lid enables a panel to be smoothly broken and enables the broken section produced by the breakage of the panel to be smoothly pressed in by the tab.
摘要:
A plate attachment device and a method for attaching and removing printing plates, wherein the positioning accuracy in the circumferential direction relative to a plate cylinder is increased and attachment and removal of the printing plate is easy, are provided. The plate attachment device 1 is equipped with a plate cylinder 11 secured to the outer periphery of a plate drive shaft 31 and having a cylindrical plate attaching surface 12 to which a printing plate 2 is to be attached from the tip end side of the plate drive shaft 31. The plate attaching surface 12 is provided with a plurality of plate securing members 121 which are formed to be movable to both the outer side and inner side in the radial direction of the plate cylinder 11, abut the printing plate 2 attached to the plate attaching surface 12 and expand in the radial direction so as to adhere and secure the printing plate 2 to the plate attaching surface 12.
摘要:
An image forming system (100) is provided with plural image forming apparatuses (200) that form images on can bodies (10), a can-body supply mechanism (300) that supplies can bodies (10) to the plural image forming apparatuses (200) successively, and a can-body discharge mechanism (400) that discharges the can bodies (10) on which images have been formed by the image forming apparatuses (200). Each of the image forming apparatuses (200) receives, at a can-body receiving position (1C), can bodies (10) supplied by the can-body supply mechanism (300). Each of the image forming apparatuses (200) also discharges, at a can-body discharging position (1D), can bodies (10) on which images have been formed. The can-body receiving positions (1C) and the can-body discharging positions (1D) are arranged more to the inner side than a circular virtual line (1B) that passes through the centers of the image forming apparatuses (200).
摘要:
Provided is a method of forming a cylindrical printing plate formed with high precision and used for printing on a metal can body, particularly an aluminum or aluminum alloy can body. The forming method of a printing plate 1 is a method of forming the printing plate 1 to be mounted on an outer periphery of a cylindrical plate cylinder 2, and includes a notch forming step of forming a positioning notch 14 in a rectangular elastic material sheet in which a resin layer to be served as a plate section 12 is formed on one surface, a cylindrical material forming step of rolling the elastic material sheet in which the positioning notch 14 is formed and overlapping both end portions 111 and 112 of the elastic material sheet and joining them in a cylindrical shape, and a plate section engraving step of engraving a printing pattern on the plate section 12 of the elastic material sheet formed into a cylinder shape.
摘要:
A stopper for assuredly preventing shifting of a cylindrical printing plate mounted on a plate cylinder is provided. A plate cylinder 1 has a plate-mounting surface 12 on which a cylindrical printing plate 3 is fitted from the front end side and mounted. A front stopper 4 is provided on the end portion of the front end side. The front stopper 4 is configured so as to be able to switch between a protruding orientation in which at least a portion of the stopper is positioned so as to protrude to the outside of the plate-mounting surface 12 in the radial direction and a retracted orientation in which the entire stopper is positioned to the inside of the plate-mounting surface 12 in the radial direction.