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Environment-friendly ink-jet CTP offset master and production method thereof

An environmentally friendly, offset printing plate technology, applied in the preparation of printing surfaces, printing plates, printing, etc., can solve the problems of complicated procedures and increased costs, and achieve the effect of simple plate making process, low cost and improved image quality

Inactive Publication Date: 2010-04-14
石深泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor has applied for the patent "ink-jet type computer direct plate-making offset printing plate" (publication number is CN1818786 ") for the above-mentioned shortcomings, but this offset printing plate is still based on the ordinary aluminum-based positive PS plate as the substrate, and it needs to be painted when making it. After the photosensitive layer is attached, the inkjet receiving layer is attached, so the production process is still relatively complicated, resulting in an increase in cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1.1 Aluminum substrate pretreatment

[0037] The aluminum substrate undergoes conventional electrolytic roughening and anodic oxidation processes, with a roughness Ra of 0.7 and an oxide film thickness of 3.0g / m 2 .

[0038] 1.2 Preparation of coating solution

[0039] Polyvinyl alcohol 5 grams

[0040] Sodium isooctylsulfonate succinate 4% aqueous solution 2ml

[0041] Polyvinylpyrrolidone 3 grams

[0042] 90ml water

[0043] 1.3 Preparation of inkjet CTP offset printing plate

[0044] Add polyvinyl alcohol into water at 70-80°C under stirring, stir for 7-8 hours to dissolve the polyvinyl alcohol completely, then add polyvinylpyrrolidone and stir to dissolve, and finally add the surfactant-dioctyl succinate Continue to stir the 4% aqueous solution of sodium bicarbonate, filter it after completely dissolving, and then apply the solution on the electrolytically roughened and anodized aluminum plate base by extrusion coating, and the coating amount is 1.5-2.0 g / squa...

example 2

[0046] 2.1 Aluminum substrate pretreatment

[0047] The aluminum substrate undergoes conventional electrolytic roughening and anodic oxidation processes, with a roughness Ra of 0.5 and an oxide film thickness of 2.5g / m 2 .

[0048] 2.2 Preparation of coating solution

[0049] Carboxymethylcellulose 0.5g

[0050] Sorbitan polyoxyethylene ether compound 10% 2ml

[0051] water 97.5ml

[0052] 2.3 Preparation of inkjet CTP offset printing plate

[0053] Add carboxymethyl cellulose to cold water under stirring, continue to stir for 7-8 hours, carboxymethyl cellulose is completely dissolved, then add surfactant-sorbitan polyoxyethylene ether compound and continue stirring, all After dissolving and filtering, the solution was applied by roller coating. The coating amount on the electrolytically roughened and anodized aluminum plate base is 0.1-0.5 g / m2, the drying temperature is 95-105°C, and the drying time is 10 minutes.

example 3

[0055] 3.1 Aluminum substrate pretreatment

[0056] The aluminum substrate undergoes conventional electrolytic roughening and anodic oxidation processes, with a roughness Ra of 0.6 and an oxide film thickness of 4.0g / m 2 .

[0057] 3.2 Preparation of coating solution

[0058] Methylcellulose 4 grams

[0059] Diisooctyl sulfonate sodium succinate 4% aqueous solution 2ml

[0060] Gelatin 2 grams

[0061] water 92ml

[0062] 3.3 Preparation of inkjet CTP offset printing plate

[0063] Add methylcellulose into cold water under stirring, continue to stir for 7-8 hours to completely dissolve methylcellulose, then add gelatin, continue to stir until completely dissolved, and finally add surfactant-diisooctyl succinate Continue to stir the 4% sodium sulfonate aqueous solution, filter it after completely dissolving, and then apply the solution on the electrolytic roughened and anodized aluminum plate base by extrusion coating, and the coating amount is 0.5-1.5 g / square rice. The ...

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Abstract

The invention relates to an 'environment-friendly ink jetting CTP offset plate and a preparation method' and belongs to the technical field of printing. The environment-friendly ink jetting CTP offsetplate comprises an aluminum plate base that is roughened by electrolysis and treated by anodization as well as an ink jetting receiving coat printed on the aluminum plate base; the coat mainly consists of a water-soluble macromolecular compound and a surface activator; the weight percentage of the water-soluble macromolecular compound and the surface activator is 2.5 to 100:1; the grain roughnessconcentration Ra of the aluminum plate base that is roughened by electrolysis and treated by anodization is 0.5 to 0.7; the thickness of a filam is 2.5 to 4.0g / m<2>. The absorbency of the jetted inkcanbe remarkably improved by coating the ink jetting receiving coat on the aluminum plate base that is roughened by electrolysis and treated by anodization; the ink can not disperse and flow on the alum inum plate base; therefore, the definition of an image is good, thus improving the image quality, thereby leading the environment-friendly ink jetting direct-plate manufacture plate material to beextensively applied to the printing industry.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to an environment-friendly inkjet CTP offset printing plate and a preparation method thereof. Background technique [0002] For a long time, film has been used in the production of offset printing plates, and film is a photosensitive material, which uses chemical processing methods, and it is very inconvenient to operate and produce in a darkroom. [0003] At present, the advanced printing process in the world is to use CTP technology (Computer to plate), that is, computer direct plate making, which saves the film and manual imposition process. CTP technology brings a simple workflow to the plate making process, but CTP plates such as photosensitive The price of the thermal plate and thermal plate is more than double that of the ordinary PS plate. In addition, the equipment for processing the CTP plate is even more expensive, so the printing cost is very high. According to the actu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41N1/14B41N3/03B41M5/52B05D7/24
Inventor 李三保秦瑞平石深泉
Owner 石深泉
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