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High sensitivity positive thermosensitive CTP plate adopting active etherate in condensation resin of pyrogallol and divinylbenzene and preparation method thereof

A technology of divinylbenzene polycondensation resin and pyrogallol, applied in printing plate preparation, printing plate, anodizing and other directions, can solve the problems of affecting promotion and use, high price, etc., and achieves good network recovery, low cost, High sensitivity effect

Inactive Publication Date: 2010-06-16
TAIXING CITY ORIENT IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the CTP plate is a high-tech product with high price, which affects its wide-scale promotion and use in China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A. Preparation of plate base: at 60°C, clean the model 1050 pure aluminum with 5% sodium hydroxide solution for 40 seconds, neutralize it with sulfuric acid to pH 5, and then wash it with deionized water; then clean the plate Electrochemical treatment, that is, an electrolytic circuit is formed with graphite electrodes under the action of alternating current to obtain a porous surface with a surface roughness Ra of 0.50; the roughened layout is then cleaned with 4% sodium hydroxide solution to remove ash, deionized water, and then oxidized treatment to generate a hydrophilic layer of aluminum oxide; after washing with water, use a 1% polyvinyl phosphoric acid aqueous solution as a sealing agent for sealing for 10 seconds at 40°C, wash with water, and dry to obtain a thermal Plate base produced by sensitive CTP plates;

[0023] B. Preparation of imaging coating solution: Dissolve 2g of infrared absorbing dye and 2.5g of basic brilliant blue in Beijing Fenglin Chemical Fa...

Embodiment 2

[0026] A. Preparation of the plate base: at 65°C, wash the pure aluminum model 1050 with 5% sodium hydroxide solution for 50 seconds, neutralize it with hydrochloric acid to a pH of 5.5, and then wash it with deionized water; then clean the plate Electrochemical treatment, that is, an electrolytic circuit is formed with graphite electrodes under the action of alternating current to obtain a porous surface with a surface roughness Ra of 0.40; the roughened layout is then cleaned with 4% sodium hydroxide solution to remove ash, deionized water, and then oxidized treatment to generate a hydrophilic layer of aluminum oxide; after washing with water, use a 2% polyvinylphosphoric acid aqueous solution as a sealing agent for sealing for 12 seconds at 60°C, wash with water, and dry to obtain a thermal Plate base produced by sensitive CTP plates;

[0027] B. Preparation of imaging coating solution: Dissolve 3g of stepcyanine dye, 0.3g of basic brilliant blue and 0.2g of crystal violet ...

Embodiment 3

[0030] A. Preparation of plate base: at 70°C, clean the model 1050 pure aluminum with 4% sodium hydroxide solution for 60 seconds, neutralize it with sulfuric acid to pH 6, and then wash it with deionized water; then clean the plate Electrochemical treatment, that is, an electrolytic circuit is formed with a graphite electrode under the action of alternating current to obtain a porous surface with a surface roughness Ra of 0.50; the roughened layout is then cleaned with 5% sodium hydroxide solution to remove ash, deionized water, and then oxidized treatment to generate a hydrophilic layer of aluminum oxide; after washing with water, use a 3% polyvinyl phosphoric acid aqueous solution as a sealing agent for sealing treatment for 14 seconds at 55°C, wash with water, and dry to obtain a positive heat treatment Plate base produced by sensitive CTP plates;

[0031]B. Preparation of imaging coating liquid: dissolve 4g of benzindole series cyanine dye and 2g of basic brilliant blue i...

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Abstract

The invention discloses a high sensitivity positive thermosensitive CTP plate adopting active etherate in the condensation resin of biphenyltriphenol and divinylbenzene and a preparation method thereof, belonging to the technical field of graphic arts. The plate is composed of a base and an imaging layer. The base is obtained after carrying out cleaning, neutralizing, electrolyzing, oxidizing and hole sealing on the aluminium strips. The imaging layer is an imaging film which is prepared by the steps of dissolving 70-90 parts of film-forming resins, 2-10 parts of inhibitational resins, 2-5 parts of infrared dyes, 2-5 parts of color background dyes, 2-5 parts of photoacid generator and 2-5 parts of additives by weight into 800-900 parts of organic solvent by weight to form coating liquid, coating the coating liquid on the base and drying the coating liquid at 90-140 DEG C for 5-10min. The imaging film is 1.5-1.9g / m2 in thickness. The plate prepared in the invention has the characteristics of high sensitivity, good mesh point restoration, high resolution, high rate of printing resistance, low cost, high operation tolerance, wide application and the like.

Description

technical field [0001] The invention belongs to the technical field of printing and plate making, and in particular relates to a positive-working thermosensitive CTP plate material of active etherified product of high-sensitivity pyrogallol and divinylbenzene polycondensation resin and a preparation method thereof. Background technique [0002] CTP (Computer to Plate) technology is a digital direct-to-plate technology that emerged in the 1990s. It is a technology that uses a computer to copy graphic information to a plate through a laser plate maker. The technical equipment consists of a prepress system and a laser platemaking machine, collectively referred to as a computer-to-plate system, or CTP system. The system does not need laser imagesetter to output film, imposition, copying and printing. The introduction of CTP technology into our country has made great progress for several years, and now it has gradually turned from popularization to maturity. From a technical po...

Claims

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Application Information

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IPC IPC(8): B41N1/12B41C1/055C23G1/22C25F3/04C25D11/04C25D11/18C09D201/00C09D5/00
Inventor 沙栩正邹应全
Owner TAIXING CITY ORIENT IND
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