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Device for measuring layer thickness of print ink on ink roller

A technology for printing ink and layer thickness, applied in the field of layer thickness devices, can solve the problem that the function will be adversely affected by dirt and the like

Inactive Publication Date: 2014-11-05
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] All measuring devices arranged outside the ink roller or cylinder have in common that corresponding installation space must be provided and that the function can be adversely affected by dirt

Method used

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  • Device for measuring layer thickness of print ink on ink roller
  • Device for measuring layer thickness of print ink on ink roller
  • Device for measuring layer thickness of print ink on ink roller

Examples

Experimental program
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Embodiment Construction

[0017] figure 1 An ink fountain 1 is shown, into which an ink fountain roller 2 is immersed. In the ink fountain 1 there is printing ink 3 at a liquid level h. On the underside of the ink fountain 1 there is a metering element 4 whose distance from the outer surface 5 of the ink fountain roller 2 can be adjusted by means of the transmission elements 6 to 9 and the servomotor 10 in such a way that a An ink film with the desired layer thickness s. In the direction of the axis of rotation 11 of the ink fountain roller 2 , the metering elements 4 and their adjusting elements are present in multiples, so that the layer thickness s can be adjusted in several regions. For driving the ink fountain roller 2, a motor 12 and an automatic synchronization transmitter 13 are provided. Printing ink is transferred from said outer surface 5 to an ink transfer roller 15 by means of an ink transfer roller 14 . The ink transfer roller 14 can swing back and forth around an axis 16 .

[0018] ...

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PUM

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Abstract

The arrangement has a sensor i.e. capacitive sensor (19) provided with a color box roller (2) in a circulating manner. The sensor is integrated in an outer surface (5) of the color box roller. Two comb type interlinking capacitor elements lie at the outer surface, and are electrically insulated against an inking roller body (17). An electrical insulating layer i.e. ceramic coating, lies over the capacitor elements. A turning transmitter is arranged between the sensor and a color control (25) of a color dosing device for transmitting layer thickness measurement signals (s).

Description

technical field [0001] The invention relates to a device for measuring the layer thickness of printing ink on an ink roller. Background technique [0002] Roller inking units are used in printing presses to inking the printing plates. The layer thickness of the printing ink is only a few μm—typically 1 to 3 μm. The layer thickness can be adjusted in multiple areas with ink knives on the ink fountain roller and the like. The ink layer thickness results from the distance from the corresponding ink knife to the surface of the ink fountain roller. The distance can be changed by hand or with a motorized adjustment mechanism. From the ink fountain roller, the thickness of the ink layer in the ink stream applied to the printing plate or printed sheet is reduced by ink cracking. In order to control or regulate the ink output, a densitometer can be used to detect the layer thickness on the sheet. In order to improve the ink delivery and to monitor the function of the ink regulat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F31/00
CPCB41F33/0063
Inventor R·施皮尔格
Owner HEIDELBERGER DRUCKMASCHINEN AG
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