摘要:
A method for shifting a doctor blade in its longitudinal direction, the doctor blade being set against a cylinder of a printing machine, wherein the shift movement of the doctor blade is such that, for most of the time of the print operation, the shift velocity of the doctor blade is in a range from 0 to 0.1 m/s, and a printing machine having a doctor blade assembly, including a doctor blade arranged to be set against a cylinder, and a shift mechanism for shifting the doctor blade in its longitudinal direction, such that the shift mechanism is adapted to execute the method.
摘要:
Printing machine having at least one impression cylinder (16), characterised in that the impression cylinder (16) has a cylinder body (44) made of a material which, in circumferential direction of the impression cylinder (16) has a linear thermal expansion coefficient of less than 2×10−6 K−1. The material may be a composite material, for example, a material containing carbon fibers, in particular a synthetic resin reinforced with carbon fibers.
摘要翻译:具有至少一个压印滚筒(16)的印刷机,其特征在于,所述压印滚筒(16)具有圆筒体(44),所述滚筒体(44)在所述压印滚筒(16)的圆周方向上具有线性热膨胀系数 小于2×10 -6 K -1以下。 该材料可以是复合材料,例如含有碳纤维的材料,特别是用碳纤维增强的合成树脂。
摘要:
Printing machine with a machine frame (10) and at least two cylinders (16, 20) which cooperate during printing, and which are mounted in a framing (12, 14; 24) formed by the machine frame (10). The framing (12, 14; 24) includes a material which has, at least in a direction transverse to the axes of rotation on the cylinders (16, 20), a linear thermal expansion coefficient that is less than 2×10−6 K−1. The material can be a composite material, particularly a carbon fiber reinforced plastic.
摘要:
A method for flexographic multi-color printing, wherein a print medium web is passed continuously through a flexographic printing press having at least two ink units, each ink unit including a printing cylinder, an anilox roller and an ink sup-ply system adapted to supply liquid ink of a specific color to the anilox roller, wherein the inks supplied in the different ink units differ in both, color and mass density, the method including the steps of mounting, in at least one of the ink units, an anilox roller having a larger diameter than the anilox roller of another one of the at least two ink units, and during printing, supplying the ink with the largest mass density to the anilox roller having the larger diameter.
摘要:
A device for handling sleeves (20) for cylinders of printing presses, wherein a carrying tube (26) is provided, on which a mounting device (28), engaging these sleeve (20), is disposed for mounting the sleeve in a position, which is aligned coaxially with the carrying tube.
摘要:
A printing press with a doctor blade device (24), which has a doctor blade (26), which can be placed against a cylinder (10), wherein the doctor blade (26) is caused to oscillate with a frequency of at least 1 Hz by an oscillator (38).
摘要:
A printing press having a roller and scanning equipment adapted to scan the peripheral surface of the roller while the roller rotates in the printing press.
摘要:
A method for knocking-off a web (12) round on a turret winder (10) by a knocking-off device (22) includes a pressure roller (24), in which the knocking-off device (22) and a coil (16) of the winder (10) are, through an abrupt relative movement, brought into a position in which the pressure roller (24) engages the periphery of the coil (16) and the abrupt movement is a pivotal movement (B) of the coil (16) about a pivotal axis that extends in parallel with the axes of rotation thereof.
摘要:
A method of adjusting a roller (18) in a rotary printing press (10), includes the steps of a) mounting the roller (18) in a preparation rack (24) so as to be rotatably supported therein, b) scanning the peripheral surface of the roller, thereby to detect a topography of the roller surface, c) deriving set data for the adjustment of the roller from the topography, and storing the set data, d) mounting the roller in the printing press (10), and e) adjusting the roller in accordance with the set data.
摘要:
A method of adjusting a roller (18) in a rotary printing press (10), comprising by the steps of: a) mounting the roller (18) in a preparation rack (24) so as to be rotatably supported therein, b) scanning the peripheral surface of the roller, thereby to detect a topography of the roller surface, c) deriving set data for the adjustment of the roller from the topography, and storing the set data, d) mounting the roller in the printing press (10), and e) adjusting the roller in accordance with the set data.