Nanometer pigment ink for computer to plate inkjet print and preparing method thereof

Abstract

The present invention relates to an environment-friendly nanometer pigment ink for computer to plate inkjet print and a preparing method thereof, belonging to the field of jet ink. The ink has long print life and good resolution ratio. Based on mass percentages, 5 to 40% of lipophilic crosslinkable resin, 2 to 10% of nanometer pigment, 2 to 10% of humectant and 40 to 91% of organic solvent are mixed. A stable system is formed after the ingredients are physically dispersed. The ink having the ingredients is printed on the surface of an aluminium plate treated with anodic oxidation by inkjet printing plate equipment to produce an image. The image can be directly printed on a machine, or baked at a certain temperature and then printed on the machine. Print life can be improved. The jet ink has the advantages of simple formula, fluent print, little possibility of nozzle clogging, excellent adaptability, high resolution rate of plates made and strong durability. The present invention provides an efficient and environment-friendly plate making ink for computer to plate inkjet print.

Description

technical field [0001] The invention belongs to the field of inkjet inks, and particularly relates to an environment-friendly nanopigment ink for inkjet printing computer-to-plate making with good printing durability and resolution and a preparation method thereof. Background technique [0002] Inkjet printing computer to plate technology (Computer to Plate, CTP) is a technology that uses inkjet printing equipment to directly spray imaging on the plate base. Inkjet CTP is recognized as a rookie in the field of CTP technology, and it is likely to promote commercial printing. The next big driver forward. Compared with laser imaging and thermal imaging, the biggest feature of inkjet printing computer-to-plate technology is that its resolution and imaging quality are restricted by inkjet platemaking ink, so the research on inkjet platemaking ink with excellent performance and strong adaptability important. At present, there are two types of inkjet printing computer-to-plate-ma...

AI Technical Summary

Problems solved by technology

At present, there are two types of inkjet printing computer direct plate-making methods: one is the shading method sprayed on the positive PS plate, and the photosensitive coating is generally photopolymerized or photodecomposed. Negative film, but the rest of the printing conditions are the same as the PS version. After spraying, exposure and development are still required, and environmental pollution cannot be avoided. The printing resistance of the plate prepared by this method is good, but the process is relatively complicated and the cost is high, such as CN200610011515 The technology disclosed in .7 belongs to this kind of plate-making method; the other is to directly spray ink on a blank printing plate to form an image. The advantages of this plate-making method are simple operation and low cost, and the ink used is generally solvent-based. Ink-jet ink, the current shortcoming is that the printing resistance of the plate material is lower than 30,000 prints, the resolution is low, and the imaging quality is poor, so it can only be used in fields such as newspapers that do not require high resolution and imaging quality, such as CN200710118701.5 Although the technology disclosed in , although it belongs to the second plate-making technology, the printing plate made of this technology and its ink has a printing durability of less than 30,000 impressions, and the technology of this invention does not mention its highest attainable resolution