Komori Patente

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A printing cylinder (17) includes a plurality of suction chambers (61 - 63) and a masking sheet (68) configured to cover the suction chambers (61 - 63). The masking sheet (68) includes a non-sucking portion (75, 76) which protrudes from the boundary of the suction chambers (61 - 63) toward the inside of the suction chambers (62, 63). A number of through holes (73) are formed in a portion except for the non-sucking portion (75, 76) in the masking sheet (68). The non-sucking portion (75) exists between the sheet (4) to be printed and the boundary of the suction chamber (62) to be used and the suction chamber (61) not to be used. This can prevent an ink mist from adhering to the printing cylinder (17).

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A printing press includes an impression cylinder (48,49), a blanket cylinder (51), a collecting plate cylinder (52), a collecting blanket cylinder (53), a plurality of partial plate cylinders (55), a plurality of inking devices (56), and a dampening unit (54). The impression cylinder holds and transports a sheet (42). The blanket cylinder (51) is in contact with the impression cylinder (48,49). The collecting plate cylinder (52) is in contact with the blanket cylinder, and a lithographic printing plate (52a) is mounted on the collecting plate cylinder. The collecting blanket cylinder (53) is in contact with the collecting plate cylinder. The plurality of partial plate cylinders (55) are in contact with the collecting blanket cylinder. The plurality of inking devices (56) supply ink to the plurality of partial plate cylinders, respectively. The dampening unit (54) supplies dampening water to the collecting plate cylinder.

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A sheet guiding device includes: gripper bars 22 provided to delivery chains 20 and each having a holding portion configured to hold an end portion of a paper sheet W, the gripper bars 22 configured to transport the paper sheet W along a paper sheet transporting route C2 spaced away from a travelling route C 1 of the delivery chains 20; a delivery cylinder 21 having a guide surface 53a and configured to guide the transported paper sheet W, the guide surface extending along an arc-shaped transporting route portion C2b in the paper sheet transporting route C2 which is located outside an arc-shaped travelling route portion C1b in the travelling route C1 of the delivery chains 20 which is formed by the holding portion travelling along the arc-shaped travelling route portion C1b; a linear travelling route portion C1a formed downstream of the arc-shaped travelling route portion C1b in a travelling direction of the delivery chains 20; and a suction guide 40 for guiding the paper sheet W to an inner side than the linear travelling route portion Cla, the paper sheet W located in a region downstream of a shift position S from the arc-shaped travelling route portion C1b to the linear travelling route portion C1a in a sheet transporting direction.

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A proof printing press (100) includes an impression cylinder (111), a collecting cylinder (113), and a wiping roller (118), which are positioned relative to a plate cylinder (112) such that a length (L11) of an outer circumference of the plate cylinder (112) at a downstream side of a facing position (P1) in a rotation direction of the plate cylinder (112) is longer than a length (L2) in a circumferential direction of a mounting surface (112a) of the plate cylinder (112), where the length (L11) of the outer circumference of the plate cylinder (112) extends between the facing position (P1) where the plate cylinder (112) faces the collecting cylinder (113) and a facing position (P2) where the plate cylinder (112) faces the wiping roller (118), and that a length (L12) of the outer circumference of the plate cylinder (112) at a downstream side of the facing position (P2) in the rotation direction of the plate cylinder (112) is longer than the length (L2) in the circumferential direction of the mounting surface (112a) of the plate cylinder (112), where the length (L12) of the outer circumference of the plate cylinder (112) extends between the facing position (P2) where the plate cylinder (112) faces the wiping roller (118) and a facing position (P3) where the plate cylinder (112) faces the impression cylinder (111).

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An inking device (1) of a numbering and imprinting machine includes: a numbering unit (46a, 46b) provided on an outer peripheral portion of a numbering cylinder (40) and configured to print a code (Sa, Sb) onto a transported sheet (S); a partition member (11c) configured to partition the inside of the ink fountain (11) such that inks (Ia, Ib) are stored divided by their colors inside the ink fountain (11); an ink fountain roller (12) configured to draw out the inks (Ia, Ib) stored in the divided manner inside the ink fountain (11), such that the inks (Ia, Ib) appear side by side in the roller axial direction; select rollers (21, 31) onto which the inks (Ia, Ib) fed from the ink fountain roller (12) are transferred, respectively; oscillating rollers (22, 34) onto which the inks (Ia, Ib) fed from the select rollers (21, 31) are transferred, respectively; and form rollers (23, 35) configured to rotate such that convex portions (23a, 23b, 35a, 35b) thereof, onto which the inks (Ia, Ib) fed from the oscillating rollers (22, 34) are transferred, come into contact with the numbering unit (46a, 46b).

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A multi-feed detection device includes: an arm member (14 to 17) supported swingably and configured to come into contact with a traveling sheet (1); and detecting means (25 to 27) for detecting whether a plurality of the traveling sheets (1) are overlapped and fed, on the basis of swing of the arm member (14 to 17). The detecting means (25 to 27) includes: a detection plate (27) attached to an arm (15); and a non-contact sensor (26) configured to measure, in a non-contact manner, the positional relation between the non-contact sensor (26) and the detection plate (27), the positional relation being changed by swing of the arm (15).

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An inspection apparatus for a sheet includes: white LED illuminators (41a, 41b) which irradiate a sheet of paper (W) with light containing visible light: IR-LED illuminators (43a, 43b) which irradiate the sheet of paper (W) with light containing infrared rays: two visible color cameras (42A, 42B); one IR monochrome camera (44): an IR filter (45) which eliminates the visible light in the light emitted from the white LED illuminators (41a, 41b) and the IR-LED illuminators (43a, 43b) and reflected off the sheet of paper (W), and makes only the infrared rays incident on the IR monochrome camera (44); and a control device (46) which determines appropriateness of a pattern portion (VE) on the sheet of paper (W) on the basis of the visible light made incident on the visible color cameras (42A, 42B), and determines appropriateness of pattern portions (IEa, IEb) on the sheet of paper (W) on the basis of the infrared rays made incident on the IR monochrome camera (44).

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This invention discloses a sheet reversing device including a first conveyance unit, second conveyance unit, third conveyance unit, and sheet pressing member. The first conveyance unit includes a first holder that holds one edge of a sheet, and a support surface that supports the sheet conveyed by the first holder, and conveys the sheet with its one edge held by the first holder, and its entire surface supported by the support surface. The second conveyance unit includes second holders that hold one edge of the sheet, and conveys the sheet held by the second holders. The third conveyance unit is supported to be swingable between a reception position at which the third conveyance unit receives the sheet from the first conveyance unit, and a transfer position at which the third conveyance unit transfers the sheet to the second conveyance unit. Also, the third conveyance unit includes a third holder that holds the other edge of the sheet conveyed by the first conveyance unit, and conveys the sheet held by the third holder. The sheet pressing member is provided in the third conveyance unit, and presses the sheet, transferred from the third conveyance unit to the first conveyance unit, against the support surface of the first conveyance unit.