Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for preparing lithographic printing plates

A lithographic printing plate and precursor technology, applied in the field of photopolymer printing plate preparation, can solve problems such as insufficient control of developer temperature, increase in cost and price of conventional processors, etc.

Inactive Publication Date: 2011-02-23
AGFA NV
View PDF18 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these conventional means are not sufficient to control the temperature of the developer when the photopolymer plate precursor enters the developer immediately after preheating, i.e. without prewashing
Due to the lack of pre-washing between preheating and development of the printing plate precursors, conventional processors are provided with more efficient means in the development section to cope with the increase in temperature as described above, which leads to this conventional Significant increase in processor cost price

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for preparing lithographic printing plates
  • A method for preparing lithographic printing plates
  • A method for preparing lithographic printing plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0069] Material

[0070] All materials used in the examples were commercially available from standard sources such as Aldrich Chemical Co. (Belgium) and Acros (Belgium) unless otherwise stated.

[0071] • PVA-1 : partially hydrolyzed polyvinyl alcohol; degree of saponification 88 mol %; viscosity of 4 wt % strength aqueous solution at 20° C. 4 mPa·s; available as MOWIOL 4 / 88 from Kururay.

[0072] • PVA-2: fully hydrolyzed polyvinyl alcohol; degree of saponification is 98 mol %; viscosity of 4 wt % concentration aqueous solution at 20° C. is 4 mPa·s; commercially available as MOWIOL 4 / 98 from Kururay.

[0073] · Acticide: Acticide LA 1026 biocide, available from THOR.

[0074] • Lutensol A8: 90 wt% surfactant solution, purchased from BASF.

[0075] • Advantage S: Vinylpyrrolidone-vinylcaprolactam-dimethyl-aminoethylmethacrylate copolymer purchased from ISP.

[0076] · FST426R: a solution containing 88.2 wt % of the reaction product of 1 mol of 2,2,4-trimethyl-hexamethylene ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
wavelengthaaaaaaaaaa
wavelengthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

A method of preparing a lithographic printing plate comprising the steps of : - providing a lithographic printing plate precursor comprising a photopolymerizable coating provided on a hydrophilic support; - image-wise exposing the precursor; - pre-heating the exposed precursor; - developing the exposed precursor in a gum solution; characterized in that after pre-heating and before developing the precursor an accelerated cooling of the precursor is carried out and the cooling does not essentially remove a part of the coating of the precursor.

Description

technical field [0001] This article concerns the preparation of photopolymer printing plates. Background of the invention [0002] In lithographic printing, a so-called printing master, such as a printing plate, is mounted on a cylinder of a printing press. The master bears the lithographic image on its surface and a printed copy is obtained by applying ink and then transferring the ink from the master to a receiving material such as paper. Conventionally, so-called "wet" lithographic inks and aqueous fountain solutions (also called dampening fluids) are supplied on surfaces composed of oleophilic areas (or hydrophobic, i.e. ink-accepting, water-repellent) and A lithographic image composed of hydrophilic (or oleophobic, ie: water-accepting, oil-repelling) regions. In so-called "driographic" printing, the lithographic image consists of ink-receptive and ink-abhesive (ink-repelling) areas, and in driographic printing only ink is supplied to the master. [0003] The so-call...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/32
CPCG03F7/32G03F7/38G03F7/322
Inventor P·亨德里克斯A·威廉森M·范达姆
Owner AGFA NV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com