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Method for controlling inking units and/or dampening units

An inking and ink zone technology, which is applied in the field of controlling inking devices and/or wetting devices in printing presses, can solve problems such as difficulty in erroneous adjustment, and achieve the effect of simplifying the cause.

Active Publication Date: 2010-02-24
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is not too easy for the operator of a printing press to see the cause of a possible misadjustment when the printed image does not provide the desired result.

Method used

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  • Method for controlling inking units and/or dampening units
  • Method for controlling inking units and/or dampening units
  • Method for controlling inking units and/or dampening units

Examples

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Embodiment Construction

[0046] figure 1 A sheetfed offset printing press 1 is shown, which has, for example, two printing units 3 , 4 . Each of the two printing units 3 , 4 has an inking unit 16 , 17 and a dampening unit 18 , 19 . In the inking units 16 , 17 the printing ink is homogenized for printing over the entire width of the printing unit by means of a plurality of distribution rollers. Furthermore, dampening agent is delivered by means of dampening devices 18 , 19 in order to be able to apply a precise ink consistency to the printing plates of the printing plate cylinders 11 , 12 . The ink fountains of the two inking units 16 , 17 are each configured here as segmented ink fountains, the number of ink zones in the ink fountains being dependent on the size of the machine. A sheet-fed offset printing press 1 with a format of 70 cm x 102 cm typically has 64 ink zones. Printing ink is transferred from the plate cylinders 11 , 12 via the blanket cylinders 13 , 26 to the printing material 9 in the...

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Abstract

A method for controlling inking units having a plurality of zones and / or dampening units in printing presses, includes determining reference values, which are dependent on surface area coverage and / orlocation, through the use of a computer for the inking zones in the inking unit. Deviations of detected color measuring values from the reference values are calculated for each inking zone. The calculated deviations are compared with data stored in the computer and corresponding with causes of color problems. The computer determines causes of color problems in the inking unit and / or dampening unit by comparison with the data.

Description

technical field [0001] The invention relates to a method for controlling an inking unit and / or a dampening unit in a printing press, wherein the inking unit has a plurality of zones. Background technique [0002] An offset printing press has a plurality of printing units, wherein each printing unit has an inking unit and a dampening unit. At least the inking unit is generally divided into a plurality of zones, viewed over the entire printing width, whereby the ink application can be metered in sections, so that inking problems can be precisely adjusted. Such partitioned inking units are used in particular in sheet-fed offset printing presses. However, in order to achieve an optimal ink metering, not only must the inking unit be accurately adjusted in sections, but also the dosing of the dampening agent must be done correctly. Furthermore, these two adjustment processes can overlap with other adjustment processes in the printing press. Therefore, it is not too easy for the...

Claims

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Application Information

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IPC IPC(8): B41F33/00B41F31/00B41F33/10
CPCB41F33/0045Y10S101/47B41F33/0036Y10S101/45
Inventor P·埃尔特N·普法伊菲尔
Owner HEIDELBERGER DRUCKMASCHINEN AG
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