Dissolution inhibitor as well as preparation method and application thereof

Abstract

The invention provides a dissolution inhibitor as well as a preparation method and application thereof, a common dissolution inhibitor has great influence on sensitivity, clean point and latitude, a photosensitive composition added with the dissolution inhibitor forms a firm film forming layer structure in a non-exposure area, and in an exposure area, an intramolecular or intermolecular hydrogen bond is opened due to a heating effect, so that the dissolution inhibitor has a good dissolution effect. The developing contrast is increased, the dissolvability difference between the exposure area and the non-exposure area is greatly increased, the developing latitude is increased, and swelling is avoided, so that the screen dot quality of the plate material can be effectively improved, and the image reproduction and precision can be ensured. And the positive image thermosensitive plate material with high sensitivity, large development latitude and good dot reduction is obtained under different plate making conditions.

Description

Technical field [0001] The present invention relates to a technical field of a photosensitive composition. Specifically, the present invention relates to a dissolution inhibitor and preparation method and application thereof, in particular the application of a photoreceptic composition and a photosensitive composition of a dissolving inhibitor in a yangtu thermal CTP plate. This application belongs to the strategic emerging industries catalog of 3 new materials industry 3.1 new functional materials industry key direction under the 3.19 ecological environment materials sub-direction of green printing materials. Background [0002] In recent years, computer direct plate making technology (CTP) has gradually become popular in the printing field, and at present, CTP plates mainly have three categories: heat-sensitive, photosensitive silver salt and photosensitive polymerization. Thermal technology is relatively mature, mainly used in the newspaper, books and commercial printing, the...

AI Technical Summary

Problems solved by technology

When the amount is small, the imaging composition has weak solvent resistance, poor resistance to alkali developer, insufficient protection for dots, and low film retention rate during development, which not only affects image resolution and dot reproducibility, but also reduces plate quality. Durability of material

Conversely, when the amount is large, its developing ability will decrease, which will reduce the sensitivity of the plate, and it will easily cause the bottom and dirty phenomenon, and will also reduce the resolution and dot reproducibility of the image.

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