Liquid photosensitive resin plate process

Copper-zinc plate making process flow:

According to the original film - flip - plate grinding - coating photosensitive liquid - printing - development - corrosion - proofing.

The purpose of grinding the plate prior to plate making is to remove scratches, blisters, oxide films, and oil stains on the plate surface, as well as to improve the absorption of the photosensitive layer, so as to facilitate the production of the plate.

The photosensitive liquid is composed of a photosensitizer and a colloid. The purpose of the copper zinc plate printing plate is to obtain a positive image on the metal surface, and then apply a protective layer on the surface of the picture and text so that the surface of the picture has a corrosion resistance.

Shaiban can be divided into positive drawing and negative drawing printing according to the original type of application. According to the printing process is divided into a single drying and sets of drying, according to the type of printing plate is divided into flat gravure and PS version printing.

Stencil printing process: Preparation of sensitized plates - Exposure imaging - Establishing oleophilic graphic basis - Creating a hydrophilic blank basis

The purpose of establishing a graphic basis for lipophilic is:

1. Make the picture of the layout visible and have lipophilicity

2. Make the image formed by exposure stable and have a certain wear resistance

The purpose of establishing a hydrophilic blank foundation: Yes,

1. Make the blank part of the layout oil repellent in the printing process.

2. Make the blank part have certain stability and wear-resistance, reach the graphic part and blank part in the printing process is relatively balanced and stable.

Liquid photosensitive resin plate process:

Paving-exposure-development-drying and post-exposure-printing

Rotogravure plate making process:

Abrasive - Plate Pre-corrosion treatment - Coating photosensitive liquid - Exposure - Development - Corrosion - Rubbing base paint - In addition to film - Erasing

PS version is divided into print and positive version

It is based on aluminum half 9 plate, before coating the photosensitive liquid, the surface of the aluminum plate needs to go through the process of oil removal, electrolytic roughening, and sealing.

Photo-decomposition photosensitizer for the manufacture of positive-acting ps plates, photopolymerization photosensitizers for printing patterns

Our country uses positive type

Intaglio plate is divided into gravure and engraving gravure according to different platemaking methods

Photogravure is also divided into shadow edition, photogravure gravure and electronic engraving gravure

The plate body is screen printing

Screen printing methods can be roughly divided into manual platemaking, electronic platemaking, photolithography (more applications)

The principle of photolithography: The photochemical change of the photo-resist film, that is, the cross-link of the light-receiving part of the photo-resist and the wire mesh are combined to form a film; the un-exposed part is washed with water or other developer, and the ink is formed on the screen. Through hole part.

Photographic plate classification: direct and indirect and hybrid methods