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Developer for direct plate-making by using 405nm laser

A developer and laser technology, applied in the direction of developer, optics, instruments, etc., to achieve the effect of high printing durability, less erosion, and complete reproduction of dots

Inactive Publication Date: 2012-08-22
胡秋帆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the development of UV-CTP plate is to use the developer used in conventional PS plate, and it is difficult to meet the above requirements. It is urgent to develop a new UV-CTP plate special developer to meet the needs of the printing market.

Method used

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  • Developer for direct plate-making by using 405nm laser
  • Developer for direct plate-making by using 405nm laser
  • Developer for direct plate-making by using 405nm laser

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] The developer components of this example are as follows, in parts by weight of each component,

[0023]

[0024]

[0025] Preparation:

[0026] Take 45 parts of deionized water, add 10 parts of sodium hydroxide under stirring until the liquid is clear and transparent, when the temperature rises to 65°C, add 25 parts of sodium silicate at this temperature; stir for 1 hour, when the liquid is clear and transparent ; Add 1 part of sodium phosphate, 0.2 part of dodecyldimethylbenzyl ammonium chloride, 0.1 part of dioctyl maleate sulfonate, and 0.1 part of alkyl glycoside in sequence at intervals of 30 minutes under stirring , 0.2 parts of sorbitol, and 0.05 parts of diethylene glycol ether; stir for 2 hours until the materials are completely mixed and uniform.

example 2

[0028]

example 3

[0030]

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PUM

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Abstract

The invention belongs to the field of inorganic materials, relates to a developer for direct plate-making by using a 405nm laser and particularly discloses a developer for an ultraviolet-computer to plate (UV-CTP) plate with peak sensing wavelength being 405nm. The developer consists of the following components in parts by weight: 40-86 parts of deionized water, 5-18 parts of sodium hydroxide, 25-40 parts of silicate, 1-8 parts of buffering agent, 0.2-2 parts of photosensitive film protecting agent and 1-5 parts of development promoting agent. The developer provided by the invention has the advantages that the developer can rapidly dissolve exposed resin film layers and can well protect unexposed resin layers, the erosion of oxide layers of non-graphic and non-text parts is less, the press run is high, the reproducibility of small dots is good, the dots are fully reproduced and the developer is suitable for high-quality printing.

Description

technical field [0001] The invention belongs to the field of inorganic materials, and relates to a developer for direct plate making using a laser as a scanning light source, in particular to a developer for UV-CTP plates with a photosensitive wavelength peak of 405nm. Background technique [0002] UV-CTP (UItraviolet-Computertoplate) technology refers to a way to use UV laser to perform computer-to-plate on PS plates. The positive UV-CTP plate consists of a photosensitive layer, a transition layer and a support. The photosensitive layer is a photolytic resin with a photosensitive wavelength of 320-450nm. The imaging principle is to use the photolytic resin to expose. Dissolved in alkaline developing solution, removed by developing process, forming graphic area, hydrophilic. The non-light-receiving part is insoluble in the alkaline developer, forming a non-graphic area, which is ink-friendly, so as to achieve the balance of water and ink to form a printed matter. [0003] ...

Claims

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Application Information

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IPC IPC(8): G03G9/00
Inventor 胡秋帆胡怀谷陈林富赵玛
Owner 胡秋帆
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