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Environment-friendly type on-press-coating ink-jet CTP offset master, pigment ink and preparation method thereof

A pigment ink and pigment technology, which is applied in the field of environment-friendly bare-plate inkjet CTP offset printing plates, can solve the problems of polluting the environment, unfavorable environmental protection, affecting plate-making quality, etc., and achieves the effect of reducing plate-making costs, reducing printing costs, and shortening plate-making time.

Inactive Publication Date: 2011-04-20
石深泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of PS plate inkjet CTP plate still needs to use PS plate, that is, to coat solvent-based photosensitive adhesive on the aluminum plate base. At the same time, the plate making process is the same as the traditional PS plate, and it also needs printing, developing, washing and other processes. , such as improper control will also affect the quality of plate making, and the discharge of developer will also pollute the environment, which is not conducive to environmental protection

Method used

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  • Environment-friendly type on-press-coating ink-jet CTP offset master, pigment ink and preparation method thereof
  • Environment-friendly type on-press-coating ink-jet CTP offset master, pigment ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 12 grams of 50% acrylic acid-butyl acrylate copolymer emulsion (M=15000±200) with a molar ratio of acrylic acid: butyl acrylate=1:1.2, to which 4g of pigment black, 2g of OP-101% aqueous solution, 16g of ethylene glycol were sequentially added Alcohol, 10g polyethylene glycol, 2g hexamethylol melamine resin, 30g deionized water, stir for 30 minutes with a mixer with a rotating speed of 500 rpm, then stir with an emulsifier at a speed of 2000 rpm for 30 minutes, sand mill Machine pulverization for 80 minutes, finally adjust the pH value to 9, and filter with a 0.5-1μm microporous membrane to obtain black pigment ink. The physical properties of this ink at 20°C are as follows:

[0051] Surface tension 35mN / m,

[0052] Viscosity 3.5cp,

[0053] Particle size d=100nm,

[0054] Conductivity 1000US,

[0055] pH=9.0.

Embodiment 2

[0057] Add 8g of 50% styrene-ethyl acrylate copolymer emulsion M=(10000±150), molar ratio: styrene: ethyl acrylate=1.5:1, then add 7g of pigment black, 1g of OP-71% aqueous solution, 20g of ethylene glycol Alcohol, 15g n-butanol, 2g hexamethylol melamine resin, 24g deionized water, stir for 30 minutes with a mixer with a speed of 500 rpm, then stir for 60 minutes with an emulsifier with a speed of 10,000 rpm, and a sand mill Crush for 120 minutes, finally adjust the pH value to 8, and filter through a 0.5-1μm microporous membrane to obtain black pigment ink. The physical properties of this ink at 20°C are as follows:

[0058] Surface tension 40mN / m,

[0059] Viscosity 4.0cp,

[0060] Particle size d=130nm,

[0061] Conductivity 1200US,

[0062] pH = 8.0.

Embodiment 3

[0064] Add 17g of 50% maleic anhydride-methyl methacrylate copolymer (M=10000±150), molar ratio: maleic anhydride: methyl methacrylate=1:1, then add 8g of pigment black, 2g OP-1010% aqueous solution, 10g ethylene glycol, 15g polyethylene glycol, 1g hexamethylol melamine resin, 32g deionized water, stir for 30 minutes with a mixer with a speed of 500 rpm, and then use a mixer with a speed of 10000 rpm Stir at high speed with an emulsifier for 60 minutes, grind with a sand mill for 90 minutes, adjust the pH value to 9, and filter with a 0.5-1μm microporous membrane to obtain black pigment ink. The physical properties of this ink at 20°C are as follows:

[0065] Surface tension 35mN / m,

[0066] Viscosity 3.5cp,

[0067] Particle size d=105nm,

[0068] Conductivity 900US,

[0069] pH=9.0.

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Abstract

The present invention relates to printing technology, and is one kind of environment friendly ink jetted CTP offset plate, color ink and its making process. The color ink comprising pigment, dispersed polymer emulsion, water soluble cosolvent, surfactant, cross-linking agent and deionized water is prepared through emulsifying and high speed dispersing. The color ink may be printed fluently without ink jet jamming, and the printed ink may be adhered to the plate fast without flowing. Through printing on aluminum base with one ink jet printer and the color ink and plate settling treatment, one environment friendly ink jetted CTP offset plate may be made without need of further treatment. The plate making process is time saving and environment friendly.

Description

technical field [0001] The invention relates to a printing plate material, in particular to a pigment ink suitable for an ink-jet printer and an environment-friendly bare plate ink-jet CTP offset printing plate made of the same. Background technique [0002] At present, the world's most advanced printing technology is to use CTP technology (Computer to plate), that is, computer-to-plate technology. The traditional printing plate material—PS plate-making requires processes such as plate-making film and manual imposition. The CTP technology saves the film and manual imposition process. CTP computer direct publishing has brought a simple plate-making process, but the price of CTP offset printing plates such as photosensitive plates and heat-sensitive plates is more than double that of ordinary PS plates, and the equipment for processing CTP plates is even more expensive, so printing High cost. According to the actual situation in China, it is necessary to use a more economic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/10B41J2/01C09D11/326
Inventor 李三保秦瑞平石深泉
Owner 石深泉
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