Abstract: A printing plate holding apparatus is provided which during a high speed printing operation reduces vibrations and noises caused in a groove for having a grip leading end and a grip trailing end of a printing plate inserted therein, which can fasten the printing plate with greater certainty, and which is suitable for the printing plate to be held securely on such as a sleeve cylinder whose weight reduction is demanded.

Abstract: A printing cylinder assembly for a printing machine includes a rotating shaft pivotally supported at one axial end shaft section thereof in a cantilever structure, and a sleeve cylinder removably mounted on the rotating shaft so that the cylinder can be fitted on and extracted from the rotating shaft from the other axial end side of the rotating shaft. The rotating shaft is formed at one axial end side thereof with a sleeve cylinder supporting tapered surface, and the sleeve cylinder is formed at one axial end side of an inner diameter portion thereof with a tapered surface, whereby the tapered surface of the sleeve cylinder can be fitted on and in close contact with the sleeve cylinder supporting tapered surface of the rotating shaft and thereby detachably coupling one axial end portion of the sleeve cylinder with one axial end portion of the rotating shaft.

Abstract: A manufacturing device of a laminated label body. The manufacturing device of a laminated label body includes a paper feeding portion, a peeling device, a winding portion, and a lamination device. The release paper to which a label is stuck is conveyed by the paper feeding portion, and the release paper is wound by the winding portion and is conveyed while being folded back around a tip end portion of a peeling plate of the peeling device, whereby the label is peeled off from the release paper. The peeled-off label is conveyed to the lamination device having two rolls provided on a downstream side of the peeling plate. The lamination device manufactures the laminated label body by overlapping a rear end portion of the preceding label and a tip end portion of the subsequent label and by sticking them each other.

Abstract: A variable printing machine for printing images different in top-bottom length with a plate and a blanket cylinder changed in diameter, is provided in which the plate and blanket cylinders and an impression cylinder can be brought into a proper state of contact with one another. Each of a plate cylinder shaft 20 and a blanket cylinder shaft 30 has its one axial end portion supported in a cantilever structure from a main frame 1 of the machine. When the plate cylinder sleeve 21 and the blanket cylinder sleeve 31 are each exchanged with one of different diameter, the blanket cylinder shaft 30 and the impression cylinder 4 are moved relative to each other so that the plate cylinder 2 and the blanket cylinder 3 may be brought into a proper state of contact with each other and so are the blanket cylinder 3 and the impression cylinder 4.

Abstract: A printing plate holding apparatus is provided which during a high speed printing operation reduces vibrations and noises caused in a groove for having a grip leading end and a grip trailing end of a printing plate inserted therein, which can fasten the printing plate with greater certainty, and which is suitable for the printing plate to be held securely on such as a sleeve cylinder whose weight reduction is demanded.

Abstract: A method of half-cut cutout processing of label paper 1 is disclosed that allows laser beam 11 to cut a label sheet 3 of the label paper 1 into a given cutout shape without damaging a supporting sheet 2. In the method, a cutting locus 30 along contours of the cutout shape is printed on a surface of the label sheet 3 in a single color which is darker than or equal in darkness to a color that is the darkest of colors in portions to be cut, and then the cutting locus 30 printed is irradiated with the laser beam, thereby cutting the label sheet 3 selectively into the cutout shape.

Abstract: A printing cylinder assembly for a printing machine includes a rotating shaft pivotally supported at one axial end shaft section thereof in a cantilever structure, and a sleeve cylinder removably mounted on the rotating shaft so that the cylinder can be fitted on and extracted from the rotating shaft from the other axial end side of the rotating shaft. The rotating shaft is formed at one axial end side thereof with a sleeve cylinder supporting tapered surface, and the sleeve cylinder is formed at one axial end side of an inner diameter portion thereof with a tapered surface, whereby the tapered surface of the sleeve cylinder can be fitted on and in close contact with the sleeve cylinder supporting tapered surface of the rotating shaft and thereby detachably coupling one axial end portion of the sleeve cylinder with one axial end portion of the rotating shaft.

Abstract: A waste removing method capable of easily carrying out a waste removing operation to peel a label sheet waste off a base sheet. A label sheet 4b of label paper 4 being conveyed along a path of label paper conveyance 1 is formed with a cut line 4h for peeling-off; an upstream side portion 4i of label sheet bordered and starting with the cut line 4h is peeled off a base sheet 4a, and the portion of label sheet 4b peeled off is carried to and wound onto a waste take-up member 20 whereby winding the peeled-off portion of label sheet 4b onto the waste take-up member 20 causes a label sheet waste 4g of succeeding label paper 4 to be peeled off the base sheet 4a and taken up onto the waste take-up member. The waste removing operation can be carried out automatically.

Abstract: A printing cylinder assembly for a printing machine having a sleeve cylinder which can be simply coupled to and decoupled from a rotating shaft and which can be exchanged easily. The sleeve cylinder is mounted to fit on the rotating shaft so that it can be fitted on, and be extracted from, the rotating shaft, constituting a printing cylinder. The rotating shaft is provided with a cam shaft and a coupling member that constitutes a coupling mechanism. In a coupling and a decoupling state which the coupling mechanism comes into, rotations of the cam shaft cause the coupling member to couple and decouple the sleeve cylinder to and from the rotating shaft when the coupling member is diametrically urged against, and parted from, the inner diametric surface of the sleeve cylinder, respectively.

Abstract: It is desirable that ink and water be fully kneaded or distributed together when an inking unit 4 and a dampening unit 5 are in communication with each other. Accordingly, a dampening water communication path 17 which brings the inking unit 4 and the dampening unit 5 in and out of communication so that they can come in and out of contact with each other is provided, the dampening water communication path comprises a plurality of rollers including an oscillating roller 14 in rotational contact with an ink distributing roller 8 and an oscillating roller 16 in rotational contact with a dampening roller 10, and a roller interposed between them is a bridging roller 15 in rotational contact with one of these adjoining rollers and capable of coming in and out of contact with the other.

Abstract: A label paper processing method includes printing a print image on label paper with a cutting locus along a contour of a shape to be cut out, using a printer in which the label paper is fed to travel intermittently. While the printed label paper is fed to travel continuously, it is half-cut with a laser beam irradiated along the printed cutting locus, thereby forming a half-cutout in the label paper. Operations of control and adjustments of a cutting depth are reduced, and a precisely cut label sheet is obtained without cutting the supporting sheet.

Abstract: A variable printing machine for printing images different in top-bottom length with a plate and a blanket cylinder changed in diameter, is provided in which the plate and blanket cylinders and an impression cylinder can be brought into a proper state of contact with one another. Each of a plate cylinder shaft 20 and a blanket cylinder shaft 30 has its one axial end portion supported in a cantilever structure from a main frame 1 of the machine. When the plate cylinder sleeve 21 and the blanket cylinder sleeve 31 are each exchanged with one of different diameter, the blanket cylinder shaft 30 and the impression cylinder 4 are moved relative to each other so that the plate cylinder 2 and the blanket cylinder 3 may be brought into a proper state of contact with each other and so are the blanket cylinder 3 and the impression cylinder 4.

Abstract: A printing cylinder assembly for a printing machine having a sleeve cylinder which can be simply coupled to and decoupled from a rotating shaft and which can be exchanged easily. The sleeve cylinder is mounted to fit on the rotating shaft so that it can be fitted on, and be extracted from, the rotating shaft, constituting a printing cylinder. The rotating shaft is provided with a cam shaft and a coupling member that constitutes a coupling mechanism. In a coupling and a decoupling state which the coupling mechanism comes into, rotations of the cam shaft cause the coupling member to couple and decouple the sleeve cylinder to and from the rotating shaft when the coupling member is diametrically urged against, and parted from, the inner diametric surface of the sleeve cylinder, respectively.

Abstract: A waste removing method capable of easily carrying out a waste removing operation to peel a label sheet waste off a base sheet. A label sheet 4b of label paper 4 being conveyed along a path of label paper conveyance 1 is formed with a cut line 4h for peeling-off; an upstream side portion 4i of label sheet bordered and starting with the cut line 4h is peeled off a base sheet 4a, and the portion of label sheet 4b peeled off is carried to and wound onto a waste take-up member 20 whereby winding the peeled-off portion of label sheet 4b onto the waste take-up member 20 causes a label sheet waste 4g of succeeding label paper 4 to be peeled off the base sheet 4a and taken up onto the waste take-up member. The waste removing operation can be carried out automatically.

Abstract: A method of half-cut cutout processing of label paper 1 is disclosed that allows laser beam 11 to cut a label sheet 3 of the label paper 1 into a given cutout shape without damaging a supporting sheet 2. In the method, a cutting locus 30 along contours of the cutout shape is printed on a surface of the label sheet 3 in a single color which is darker than or equal in darkness to a color that is the darkest of colors in portions to be cut, and then the cutting locus 30 printed is irradiated with the laser beam, thereby cutting the label sheet 3 selectively into the cutout shape.

Abstract: It is desirable that ink and water be fully kneaded or distributed together when an inking unit 4 and a dampening unit 5 are in communication with each other. Accordingly, a dampening water communication path 17 which brings the inking unit 4 and the dampening unit 5 in and out of communication so that they can come in and out of contact with each other is provided, the dampening water communication path comprises a plurality of rollers including an oscillating roller 14 in rotational contact with an ink distributing roller 8 and an oscillating roller 16 in rotational contact with a dampening roller 10, and a roller interposed between them is a bridging roller 15 in rotational contact with one of these adjoining rollers and capable of coming in and out of contact with the other.

Abstract: To make it possible to variably print while preventing a printable material from loosening and fluttering and further preventing the material from damaging and contamination by printing.