摘要:
An object is to provide a printing apparatus or the like that improves printing accuracy when a carriage moves back and forth for printing. A block 51 on a block surface plate is mounted on the block surface plate at a predetermined location. On the other hand, a substrate 54 on a print surface plate is mounted at a location corresponding to the location of the block 51, that is, a location where a picture transfer is desirably received from a blanket cylinder 13. In the present invention, the arrangement of sliders 52 and 40 for the block carriage 50 and a printing carriage 7 to reciprocate along two rails 30 in the block carriage 50 and that in the printing carriage 7 are the same. With such an arrangement, at the same location immediately below the blanket cylinder 13 on the same track 30, even when the straightness of the rail 30 is not sufficient, the block 51 and the glass substrate 54 take the same position at the location, and thus print misalignment can be prevented.
摘要:
A blanket cylinder washing method for use in a web offset printing press. A blanket cylinder is rotated independently of running of a web, with the blanket cylinder thrown off, preferably, the blanket cylinder is rotated at a speed V1 higher than a running speed V0 of the web, and the blanket cylinder is washed. It is thereby possible to decrease the amount of spoilage generated when the blanket cylinder is washed.
摘要:
A printing cylinder 20 has a length for mass printing and is used for an inking roller group for supplying printing ink, a plate cylinder having a printing plate, a blanket cylinder for printing with the ink transferred from the printing plate, etc. A ring groove 25 is dug at each end face of the printing cylinder 20 so as to open annularly and to have a depth of 1/4 to 1/3 of the length of the printing cylinder 20 in the axial direction of the printing cylinder. Deflection deformation caused on the outer circumference of the printing cylinder 20 can thereby be equalized at the central portion and both end portions of the printing cylinder 20. Axial directional changes in the pressing force caused by the deflection deformation can be reduced, and even with the elongated printing cylinder 20 of the same cylinder diameter as a conventional one, irregularities of inking in the axial direction of the printing cylinder 20 due to changes in the pressing force do not occur. Thus a high quality printing is maintained.
摘要:
An object is to provide a single color press which shortens takt time by eliminating wastefulness from the printing process. There is provided: a first transfer cylinder which transfers an image to a first printing substrate; a first moving carriage which holds the first transfer cylinder in a rotatable manner and travels along a frame; a second transfer cylinder which transfers an image of the same color and shape to a second printing substrate; a second moving carriage which holds the second transfer cylinder in a rotatable manner and travels along the frame 3; and a single relief plate which removes a reverse image from ink applied to the first transfer cylinder and the second transfer cylinder.
摘要:
An object is to provide a single color press which shortens takt time by eliminating wastefulness from the printing process. There is provided: a first transfer cylinder which transfers an image to a first printing substrate; a first moving carriage which holds the first transfer cylinder in a rotatable manner and travels along a frame; a second transfer cylinder which transfers an image of the same color and shape to a second printing substrate; a second moving carriage which holds the second transfer cylinder in a rotatable manner and travels along the frame 3; and a single relief plate which removes a reverse image from ink applied to the first transfer cylinder and the second transfer cylinder.