Oily ink for inkjet computer to plate, preparation method and application thereof

An inkjet printing, oil-based technology, used in applications, inks, household appliances, etc., can solve the problems of reduced printing quality, slow solvent evaporation, and image resolution effects, and achieve high print durability and good printability.

Active Publication Date: 2012-05-23
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solvent in the ink volatilizes slowly and requires a higher temperature to dry, and when the printing plate is printed on the machine, the image and text area in the printing plate are prone to image drop-off w

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Mix the thermoplastic polyamide that accounts for 40wt% of the total amount of oily ink, the soybean oil of 0.01wt%, the basic brilliant blue (particle size of 10nm) of 0.01wt%, and the ethylene glycol dimethyl ether of the remainder; stir at room temperature The mixed solution was mixed for 12 hours, and the mixed solution was filtered several times with a filter membrane, and the filtrate obtained after filtering out the particle impurities with a particle diameter greater than 150nm in the mixed solution was oily ink.

Embodiment 2

[0044] Mix 1wt% thermoplastic polyether, 25wt% tung oil, 5wt% black dye SP series (particle size is 3000nm), and the rest of isopropanol, and stir the mixed solution at room temperature After 0.5 hour, the mixed solution was filtered multiple times with a filter membrane, and the filtrate obtained after filtering out the particulate impurities with a particle diameter greater than 150 nm in the mixed solution was oily ink.

Embodiment 3

[0046] The thermoplastic polyester that accounts for 5wt% of oily ink total amount, the olive oil of 10wt%, the dyestuff acid blue 25 (particle size is 3000nm) of 0.03wt% are mixed, and the ethylene glycol monobutyl ether of balance, room temperature stirs and mixes After 2 hours of solution, the mixed solution was filtered several times with a filter membrane, and the filtrate obtained after filtering out the particle impurities with a particle diameter greater than 150nm in the mixed solution was oily ink.

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Abstract

The invention relates to an oily ink for inkjet computer to plate, a preparation method and application thereof. Thermoplastic resin 1-40 wt% of a total weight of the oily ink, oil 0.01-25 wt% of a total weight of the oily ink, nano dye and / or micron dye 0.01-5 wt% of a total weight of the oily ink and the balance of organic solvent are mixed; the mixed solution is stirred at room temperature and filtered to remove particle impurities therein, so as to obtain the oily ink. The oily ink is sprayed on a nude base by an ink jet printer to form images; then the base sprayed with the oily ink is heated to 60-300 DEG C; thermoplastic resin crosslinked and solidified under effect of non-saturated groups in the oily ink, so as to increase resistance of the images on the printing plate to cleaning paste containing alcohol. The obtained printing plate has good printability and high pressrun during printing on a machine, and a presswork has an image resolution reaching 1751pi.

Description

technical field [0001] The invention relates to the field of printing plate-making inks, in particular to oil-based inks for printing plate-making, and more specifically to oil-based inks used in inkjet printing direct plate-making techniques and their preparation methods and applications. Background technique [0002] Inkjet printing direct plate-making technology (Inkjet Computer To Plate) uses an inkjet printer to spray plate-making ink on the surface of a metal plate or a polymer plate to form an oil-friendly graphic area, and the area where the ink is not sprayed is a hydrophilic non- Graphic area, using the contrast between hydrophilic and lipophilic areas of graphic and non-graphic areas to realize printing plate making technology. Inkjet printing direct plate-making technology avoids post-processing processes such as exposure, development, washing, and fixing, and the resulting printing plate has better resolution and printing durability after printing on the machine...

Claims

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Application Information

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IPC IPC(8): C09D11/10C09D11/06C09D11/30
Inventor 周海华宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI
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