Cleaning solution for dry plate developing tank and cleaning method thereof

Abstract

The invention relates to a cleaning solution for a dry plate developing tank and a cleaning method thereof. The cleaning solution comprises the components of cerium ammonium nitrate, perchloric acid and de-ionized water; the ratio of the cerium ammonium nitrate, the perchloric acid and the de-ionized water is 1-13g:1-20ml:25-2000ml. The cleaning method for the developing tank comprises the following steps of: (1) draining the waste developing solution in the developing tank, cleaning the developing tank by the de-ionized water, and draining the waste solution after the cleaning operation is finished; (2) injecting the cleaning solution of the dry plate developing tank to the developing tank, cleaning the developing tank and recycling the waste cleaning solution after the cleaning operation is finished; and (3) adding the phosphate-free cleaning agent to the developing tank and washing the developing tank by the de-ionized water till no foam exists. The cleaning solution for the dry plate developing tank, provided by the invention, can rapidly and effectively remove black silver ions and strong oxidizing residues, thereby preventing black type or mildew type defects on the surface of the dry plate in the developing process.

Description

technical field [0001] The invention relates to a dry plate developing tank cleaning technology, more specifically, to a dry plate developing tank cleaning solution and a cleaning method. Background technique [0002] The developing tank refers to a special container for dry plate or other silver salt products to be developed and loaded with developing solution. The dry plate is a superfine silver salt glass plate commonly used in the mask plate industry to record graphics and text information. The process of developing with a developing tank loaded with developer is a chemical reaction process. After development, some black silver ions and strong oxidative residues will easily remain on the bottom and wall of the developing tank. If the cleaning is not clean, when the developing tank is used again , the black silver ions and strong oxidative residues remaining in the tank will be mixed in the developer, and aggregated on the surface of the dry plate during the development ...

AI Technical Summary

Problems solved by technology

The process of developing with a developing tank loaded with developer is a chemical reaction process. After development, some black silver ions and strong oxidative residues will easily remain on the bottom and wall of the developing tank. If the cleaning is not clean, when the developing tank is used again , the black silver ions and strong oxidative residues remaining in the tank will be mixed in the developer, and aggregated on the surface of the dry plate during the development process to produce black spots or mildew spots, which will affect the quality of the dry plate

Traditionally, a mixed strong oxidizing solution prepared by potassium permanganate, concentrated sulfuric acid and deionized water is used to clean the developing tank. However, this kind of cleaning solution has disadvantages such as high risk of configuration, poor stability, weak removal of Ag, and long preparation time of cleaning solution.