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Process for treating an imaged printing form

A printing plate and imaging technology, which is applied in the field of processing the imaged printing plate, to achieve the effect of improving contrast, simple device, and reducing waste pages when starting up

Inactive Publication Date: 2013-05-08
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface must be decontaminated, initialized if necessary, after printing and prior to re-covering and re-imaging, as residues of the gumming layer can make re-covering with amphiphiles difficult

Method used

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  • Process for treating an imaged printing form
  • Process for treating an imaged printing form

Examples

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Embodiment Construction

[0036] figure 1A flow chart of a preferred embodiment of the method according to the invention for processing imaged printing plates is shown. Such a printing form can, for example, contain or consist of titanium dioxide and be arranged on a carrier, for example metal or plastic. The printing form is preferably configured as a lithographic printing form for lithographic offset printing. The method according to the invention can not only be used in machines for processing printing materials, especially in printing presses, but can also be used at least partially, ie at least several method steps such as initialization, covering, imaging, gluing and / or removal in such Implemented externally to the machine.

[0037] In method step 100 (initialization), the rough-cleaned or selectively fine-cleaned (see method step 170 below) surface is initialized prior to re-covering 110 with molecules by applying an initializing liquid, especially water, VE water or an aqueous priming soluti...

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Abstract

A process for treating an imaged printing form, in particular a printing form covered with amphiphilic molecules or with polymers, such as saccharides, includes applying a gum, in particular a microscopic gum layer, to the surface of the printing form in the liquid state. The gum is removed or reduced down to a remaining nanoscopic covering after a short or negligible time interval, relative to the time interval until the application of lithographic liquid, for example dampening solution or printing ink, to the surface. The removal or reduction of the gum is preferably carried out in the still liquid state, i.e. before the applied gum dries on, and preferably immediately after the application. The remaining gum covering protects the printing form against contaminants and increases its hydrophily / hydrophoby contrast. An apparatus for treating an imaged printing form, a re-imageable printing form and a machine for processing printing material, are also provided.

Description

technical field [0001] The present invention relates to a method for processing imaged printing plates. Furthermore, the invention relates to reimageable printing plates and devices for processing imaged printing plates. Background technique [0002] Methods, printing plates and devices of the described type are in the field of imaging / re-imaging and processing of imaged / re-imaged printing plates, in particular in machines for processing printed substrates such as sheets of paper or cardboard Used in printing units of lithographic offset presses. [0003] Lithographic plates coated with amphiphilic molecules on the nanoscale are known from the prior art, for example from DE 102 27 054 A1, which can be imaged several times during a cycle and are thus reusable. A printing form is disclosed which has a hydrophilic printing surface, for example made of naturally oxidized titanium, wherein the printing surface is covered with an amphiphilic compound strongly attached to the sur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41N3/08B41F7/24
CPCB41C1/1083B41P2227/70Y10T428/263
Inventor M·帕祖赫H·格兰特M·施勒霍尔茨
Owner HEIDELBERGER DRUCKMASCHINEN AG
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