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Thermosensitive positive CTP plate developing solution

A heat-sensitive positive image and developing solution technology, which is applied in the field of developing solution, can solve the problems of developing crystals and developing sediments, and achieve the effects of reducing corrosion, reducing developing crystals and reducing developing sediments

Pending Publication Date: 2020-06-23
LUCKY HUAGUANG GRAPHICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a thermal positive CTP plate developer solution, which solves the problems of development sediment and development crystallization commonly existing in the development process of the developer solution currently on the market by adding a specific corrosion and scale inhibitor. At the same time, the developer can protect the graphic part of the plate during the developing process

Method used

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  • Thermosensitive positive CTP plate developing solution

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example

[0016] A thermal positive CTP plate developer, comprising the following components by weight: 8-14% of alkaline developer main agent, 2-8% of developer penetrant, 0.5-3% of coating protection agent, scale inhibitor 0.01-1% solvent, 0.1-5% organic solvent, 100% deionized water, scale inhibitors include benzotriazole sodium, benzotriazole, mercaptobenzothiazole, mercaptobenzothiazole sodium, methyl One or more of benzotriazoles.

[0017] The main alkaline developer is one or more of alkali metal hydroxides, alkali metal silicates, alkali metal phosphates, and alkali metal carbonates.

[0018] The alkali metal hydroxide is preferably sodium hydroxide, potassium hydroxide, lithium hydroxide; the alkali metal silicate is preferably sodium metasilicate, potassium metasilicate; the alkali metal phosphate is preferably sodium phosphate, disodium hydrogen phosphate, Sodium dihydrogen phosphate, potassium phosphate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate; the al...

Embodiment 1

[0027] Add 820 liters of deionized water to the reactor equipped with a stirrer, and start stirring; add 120 kg of sodium metasilicate pentahydrate, and stir until completely dissolved; add 50 kg of sodium dodecylbenzene sulfonate, and stir until completely dissolved Add 10 kg of glycerin and stir until completely dissolved; add 0.2 kg of tolyltriazole and stir until completely dissolved; add 2.5 kg of sodium polyacrylate and stir until completely dissolved; add 10 kg of ethylene glycol monoethyl ether and stir until Completely dissolved to obtain a coating solution.

Embodiment 2

[0029] Add 820 liters of deionized water to the reactor equipped with a stirrer, and start stirring; add 125 kg of sodium metasilicate pentahydrate, and stir until completely dissolved; add 50 kg of sodium dodecylbenzene sulfonate, and stir until completely dissolved Add 8 kilograms of polypropylene glycol, stir until fully dissolved; add 0.25 kilograms of mercaptobenzothiazole, stir until fully dissolved; add 2 kilograms of sodium polyacrylate, stir until completely dissolved; add 10 kilograms of isopropanol, stir until completely dissolved, and obtain Coating solution.

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Abstract

The invention discloses a thermosensitive positive CTP plate developing solution, which comprises the following components in parts by weight: 8-14% of an alkaline developing main agent, 2-8% of a developing penetrant, 0.5-3% of a coating protective agent, 0.01-1% of a scale inhibitor, 0.1-5% of an organic solvent, and deionized water added to 100%, wherein the scale inhibitor comprises one or more of benzotriazole sodium, benzotriazole, mercaptobenzothiazole, mercaptobenzothiazole sodium and methylbenzotriazole. According to the invention, benzotriazole sodium, benzotriazole, mercaptobenzothiazole, mercaptobenzothiazole sodium, methylbenzotriazole and the like are added as a corrosion and scale inhibitor; the substances form a complex with aluminum ions, and a film is formed on the surface of an aluminum plate base in a chemical adsorption manner, so that the corrosion of a developing solution to the aluminum plate base of the plate material in the developing process is effectively reduced, the developing sediment is greatly reduced, the film is formed on the surface of an image-text part of the plate material, and the protection of the image-text part in the developing process isenhanced.

Description

technical field [0001] The invention belongs to the technical field of developer, and in particular relates to a thermal positive CTP plate developer. Background technique [0002] Computer-to-plate (CTP) technology is currently the mainstream technology in the printing industry. CTP technology is divided into photosensitive CTP technology and thermal CTP technology according to its exposure light source. [0003] Thermal positive CTP technology means that after the thermal positive CTP plate is scanned by an infrared laser, the infrared absorbing dye in the thermal coating absorbs the infrared laser energy to generate heat. When a certain temperature is reached, the acid release agent is heated Decomposition produces acid, which changes the solubility of the lipophilic coating in the alkaline aqueous solution (that is, the developer solution). After exposure, the coating on the exposed part of the plate can be dissolved in the developer solution, exposing the hydrophilic co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/32
CPCG03F7/322
Inventor 张林孔祥丽聂冰陈方飞吴东璟张苗苗
Owner LUCKY HUAGUANG GRAPHICS
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