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Apparatus and method for conditioning dampening solution for an offset printing press

A technology of a processing device and a processing method, applied in the field of ion exchangers, can solve problems such as the limitation of electrical conductivity, and achieve the effect of improving processing and high printing quality

Inactive Publication Date: 2009-08-05
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the ability to conduct electricity is only partially limited by the substances that affect the printing process

Method used

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  • Apparatus and method for conditioning dampening solution for an offset printing press
  • Apparatus and method for conditioning dampening solution for an offset printing press

Examples

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Embodiment Construction

[0035] figure 1A preferred embodiment of the dampening agent 10 treatment device according to the invention is shown, suitable for isopropanol-free or low-isopropanol offset printing. An offset printing machine 44 comprises a printing unit 42 and a dampening agent device 40 interacting with the printing unit 42 , from which dampening agent reservoir 11 can be passed through the inlet device 41 . It reaches the printing unit 42 and returns from the printing unit 42 to the dampening agent reservoir 11 via the return unit 43 . Hardened fresh or raw water and customary wetting agent additives are usually supplied to the wetting agent reservoir 11 via a filling feed 38 which can be closed by means of a valve. The supplied wetting agent 10 is 2+ and Mg 2+ The ionic titration or water hardness measurement 16 by means of a water hardness sensor should have a hardness value of 8° to 16° dH (German hardness), preferably 8° to 12° dH. Ca in the ion-sensitive electrode 18 2+ For ion ...

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Abstract

An apparatus and a method for conditioning dampening solution for an offset printing press, include a cation exchanger for the removal of salt-forming ions from the dampening solution. The operation of the cation exchanger leaves the pH of the dampening solution unchanged. The apparatus includes a control device based on measuring the water hardness of the dampening solution for the supply of the dampening solution to the cation exchanger.

Description

technical field [0001] The present invention relates to a dampening agent treatment apparatus and method for an offset printing press, comprising an ion exchanger for removing salt-forming ions from the dampening agent. Background technique [0002] In particular, it is currently required to reduce or even to completely avoid the use of environmentally harmful substances in offset printing processes. It is especially desirable to print with reduced or no alcohol, specifically with reduced or no use of isopropyl alcohol (IPA). In practice, however, the problem arises in isopropanol-free offset printing that the dampening agent of the offset printing press often has to be completely replaced after only a few weeks, since the quality of the offset printing process is significantly reduced. This is both ecologically and economically unacceptable, since frequent removal of the wetting agent as special waste is expensive and environmentally unfriendly. Furthermore, significant o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N3/08B01J47/00B01D36/00
CPCC02F2001/422B01J47/14C02F2001/425B41N3/08B01J39/00B41F7/24B01J47/145B01J47/15B01J41/00
Inventor W·安魏勒M·迪策U·施汤R·蒂姆
Owner HEIDELBERGER DRUCKMASCHINEN AG
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