Structured surface contacted with printed material and having substrate and at least one layer

A substrate, structuring technology, applied in the direction of the jacket of the printing press roll, the general parts of the printing machine, the coating, etc., can solve the problem of no description, no substrate roughness measurement value, etc.

Active Publication Date: 2012-10-24
HEIDELBERGER DRUCKMASHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But more than one layer of the main primer layer has an inlay without describing
The magnitude of the substrate roughness is not given

Method used

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  • Structured surface contacted with printed material and having substrate and at least one layer
  • Structured surface contacted with printed material and having substrate and at least one layer

Examples

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Embodiment Construction

[0026] figure 1 A schematic sectional view of a preferred embodiment of the face 1 of the invention is shown. The surface is designed as a flexible cylinder liner 2 and is held, for example stretched as a so-called sleeve, on a transport cylinder 3 of a printing material processing machine, for example an offset printing press for processing sheets.

[0027] The surface 1 comprises a base 4 made of nickel. The base body has structures 5 (peaks and valleys) produced by galvanic molding (electroforming). The nickel substrate is chrome-plated, that is to say provided with a chrome layer 6 .

[0028] A sol-gel layer 7 is arranged on the chrome layer 6 . The sol-gel layer has a lower layer 7a and an upper layer 7b composed of sol-gel. Particles 8 composed of cobalt-aluminate are embedded in the two layers (cf. figure 2 ).

[0029] exist figure 1 As can be seen in , the two layers 7a and 7b flatten the coarse structure 5 somewhat. The two layers 7a and 7b are slightly thinn...

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Abstract

The present invention relates to a structured surface contacted with a printed material, (e.g., conveyor roller packing), having a substrate (e.g., made by nickel) and at least one layer; wherein, the layer (7) comprises at least two layers (7a, 7b), one of the two layers comprises particles (8); both the layers (7a, 7b) comprise the particles (8) (e.g., made by Co-aluminate); the particles (8) of the two layers (7a, 7b) have the average size less than 2 [mu]m and perferably 0.3 [mu]m; the substrate (4) has a structure (5) having an RZ value between about 20 [mu]m and about 40 [mu]m; the double layer (7, 7a, 7b) of the present invention endows a high abrasion resistance to the surface (1), thereby effectively avoiding crack in the surface (1) and generating uniform double layers (7, 7a, 7b).

Description

technical field [0001] The invention relates to a structured surface for contacting a printing substrate with the features of the preamble of claim 1 , said surface having a substrate and at least one layer. Background technique [0002] It has been known to use transport cylinders to transport a printing substrate, such as a sheet of paper, through a printing press. In order to prevent freshly printed ink from depositing on the cylinder and contaminating it, the cylinder is provided with a replaceable lining (or "wrap") which is microstructured and anti-adhesive coated. The microstructure reduces the contact surface between the backing and the printing material and improves the guidance of the printing material due to the roughness. The anti-stiction encapsulation reduces the ink receiving properties of the liner. [0003] A closure for lining is disclosed, for example, in US 7,641,194 B2. A mechanism for changing the lining is disclosed, for example, in US Pat. No. 7,28...

Claims

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Application Information

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IPC IPC(8): B41N10/04B41N10/00B41F13/193B41F13/08B41F13/02B41F22/00
CPCB41N7/00B41N7/005B65G39/00B41N2207/02B41N2207/04B41N2207/10B41F22/00G03G7/0093C23C18/1225C23C18/1241C23C18/1254C23C18/127C25D5/625
Inventor J·弗赖W·科尔贝M·克拉夫特
Owner HEIDELBERGER DRUCKMASHINEN AG
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