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Jacket for impression cylinder or transport cylinder of printing press

A technology of embossing rollers and conveying rollers, which is applied to printing machine roller jackets, general parts of printing machinery, printing machines, etc., and can solve problems such as restrictions on washing silicone resin, decreased productivity, and heavy burdens on operators

Inactive Publication Date: 2008-04-30
KOMORI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, a heavy burden is placed on the operator, resulting in decreased productivity
Additionally, silicones can swell and are less resistant to solvents
For this reason, washing silicone resins with solvents is limited

Method used

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  • Jacket for impression cylinder or transport cylinder of printing press
  • Jacket for impression cylinder or transport cylinder of printing press
  • Jacket for impression cylinder or transport cylinder of printing press

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First, FIG. 3 shows an example of a printing machine equipped with an impression cylinder and a delivery cylinder, in which the covering of the present invention is used. The press is a sheet-fed rotary press for printing on both sides of the paper. The printing machine includes a paper feeder 101 , a printing unit 102 and a paper discharge unit 103 . Sheets stacked in the sheet feeder 101 are taken out there one by one. Then, the sheet thus taken out is fed to the printing unit 102 via the registration plate 104 , the swing gripper 105 , and the transfer roller 106 .

[0019] The printing unit 102 includes four front printing units 107A, 107B, 107C and 107D, and four rear printing units 108A, 108B, 108C and 108D. The front printing units 107A-107D provide first to fourth colors respectively. Each of the front printing units 107A-107D is composed of an impression cylinder 109a, a blanket cylinder (rubber cylinder) 110a, a plate cylinder 111a and an inking device (not...

Embodiment 2

[0041] 2 is a partial sectional view of a cover for an impression cylinder or a transfer cylinder according to another embodiment of the present invention.

[0042] In the covering body 20 of this embodiment, the electroless nickel plating layer 21 having ink repellency is also coated on the back surface of the base material 1 . Forming the layer of the nickel plating layer 21 on the back surface improves the sliding properties of the covering body 20 to the surface of an impression cylinder or the like on which the covering body 20 is mounted. Therefore, when the covering body 20 is stretched to be mounted on a drum, tension can be smoothly applied. As a result, the covering 20 is uniformly bonded to the drum. Since the ink-repelling particles 3, such as modified fluorine-containing resin particles, are dispersed in the plating layer 21, the self-lubricating properties of the particles 3 improve sliding properties. Therefore, by forming the same nickel plating layer on the ...

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PUM

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Abstract

Disclosed is a jacket for any one of an impression cylinder (19a, 109b) and a transport cylinder (112) of a printing press, which jacket is wound around any one of the impression cylinder (19a,109b) and the transport cylinder (112) of a printing press so as to prevent ink from adhering to the cylinder, the jacket produced by plating the front side of a sheet-shaped base (1) having convex and concave portions (2) thereon with a metal having ink-repellent particles (3) dispersed therein, in a manner that the convex and concave portions (2) on the front side of the sheet-shaped base (1) are left.

Description

technical field [0001] The present invention relates to a covering that is wrapped around an impression cylinder or delivery cylinder of a printing press to prevent ink from adhering to the impression cylinder or delivery cylinder. Background technique [0002] If printing is performed on both sides of a sheet, such as paper or cloth, using a perfecting press such as a sheet-fed perfector, in which case, when a second or subsequent color is to be printed, the sheet From the side that has been printed on, the impression cylinder is pressed against the blanket cylinder so that the other side of the sheet contacts the blanket cylinder. Thus, the ink adheres to the impression cylinder, and the ink that has adhered to the impression cylinder then adheres to another printed matter (another sheet, such as paper) that comes next. As a result, the printed matter is smeared and becomes a bad printed matter. [0003] Such a problem is not limited to a perfector, but also occurs in a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N7/00B41F23/00
CPCB41F22/00B41N7/00B41F30/02B41N2207/02B41N2207/14B41N2207/10
Inventor 井上清一郎
Owner KOMORI CORP
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