Method for manufacturing working printing plate for production of color kinescope screen printing plate

Abstract

The invention relates to a method for manufacturing a working printing plate for the production of a color kinescope screen printing plate. The method comprises the following steps of: preparing cleaning agent solution with water and dishware cleanser essence; placing new glass into the cleaning agent solution for degreasing, or placing the repeatedly used glass into stripping solution for stripping, and then degreasing with the cleaning agent solution; preparing a surface treatment fluid from hydrofluoric acid and water; carrying out surface treatment on the degreased glass with the surface treatment fluid; coating photoresists on the surface of glass after surface treatment, drying and exposing in a vacuum environment; flushing and developing the photoreceptive glass for firming membrane, dyeing, centrifuging and drying; spraying a protection film on the surface of the dyed glass and solidifying the protection film; placing the glass under a microscope, adjusting the relative position of a figure and splicing positioning dowels to manufacture the working printing plate. The invention solves the problems that the working printing plate glass is bent and deformed due to grinding to cause short service life and low figure resolution of the working printing plate glass, reduces the manufacturing cost of the working printing plate and improves the quality of the working printing plate and the working efficiency of an alignment procedure.

Description

technical field [0001] The invention belongs to the technical field of color picture tube manufacturing, and in particular relates to a method for making a working plate used in the production of color picture tube screen plates. Background technique [0002] Screen plates are used in the manufacture of color picture tubes, and the production of the screen plates is usually by photolithography: first, a working plate with graphics is made, and then the graphics on the working plate are transferred to the photosensitive adhesive coated with photoresist through exposure. The steel strip, and then the steel strip is made into a screen version through a series of processes such as development and corrosion. [0003] When making a work plate, first use a grinder to grind the glass surface of the work plate evenly to increase the roughness of the glass surface of the work plate and improve the adhesion between the photosensitive glue and the glass surface when the photosensitive g...

AI Technical Summary

Problems solved by technology

After the finished working plate is used for a period of time, the graphics on the plate will have defects such as damage, making the working plate unusable. At this time, it is necessary to re-grind the working plate with damaged graphics to completely eliminate the unusable glass surface. Damaged graphics, and then carry out processes such as photosensitive adhesive coating and exposure, and then make a new working version

[0004] In the process of making the working plate, the glass of the working plate must be ground, otherwise the following problems will occur: 1) The adhesion between the photosensitive adhesive and the glass surface is poor, and the graphics on the glass surface will be washed in the subsequent process, such as developing 2) The damaged original graphics on the glass surface cannot be completely cleaned, which will affect the re-production of new graphics on the working glass

The resulting working version does not meet the requirements for use

However, the ground glass of the working plate will be bent, and the degree of bending will increase with the number of grinding times, resulting in the bending of the working plate glass after several times of grinding so that it can no longer be used

In addition, the curved glass of the working plate makes the operation of the post-process—such as the alignment process of the working plate very difficult

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