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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, applied in the field of environment-friendly bare plate inkjet CTP offset printing plate, can solve the problems of unfavorable environmental protection, polluting the environment, affecting the quality of plate making, etc., and achieve the effect of reducing printing costs

Inactive Publication Date: 2007-12-05
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
  • 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, in which 4g of pigment black, 2g of OP-10 1% aqueous solution, 16g of ethyl Diol, 10g polyethylene glycol, 2g hexamethylol melamine resin, 30g deionized water, stir with a mixer at 500 rpm for 30 minutes, then stir at a high speed with an emulsifier at 2000 rpm for 30 minutes, sand Grinding in a mill for 80 minutes, finally adjusting the pH value to 9, and filtering through a 0.5-1 μm 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-7 1% aqueous solution, 20g Ethylene glycol, 15g n-butanol, 2g hexamethylol melamine resin, 24g deionized water, stir for 30 minutes with a stirrer at 500 rev / min, then stir at a high speed for 60 minutes with an emulsifier at 10000 rev / min, sand Mill for 120 minutes, finally adjust the pH value to 8, filter with a 0.5-1μm microporous membrane to obtain black pigment ink, and 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] With 17g 50% maleic anhydride-methyl methacrylate copolymer (M=10000 ± 150), molar ratio: maleic anhydride: methyl methacrylate=1: 1, then add 8g pigment black, 2g OP-10 10% aqueous solution, 10g ethylene glycol, 15g polyethylene glycol, 1g hexamethylolmelamine resin, 32g deionized water, stir for 30 minutes with a stirrer at 500 rpm, and then use 10000 rpm The separate emulsifier is stirred at high speed for 60 minutes, and the sand mill is crushed for 90 minutes. Finally, the pH value is adjusted to 9, and the black pigment ink is obtained by filtering with a microporous membrane of 0.5-1 μm. 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-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 economical method...

Claims

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Application Information

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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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