What is Mesh Screen?

Mesh Screen is also called "Mesh Edition", "Mesh Edition", and "Mesh Edition". An optical tool used in photoengraving to form dots on a photosensitive film. The screen commonly used in letterpress and lithographic plate making uses two optical glass engraved with equal-width black and white parallel lines that cross each other at 90° to form a square grid. The camera is placed in front of the film to divide the incident light. Due to diffraction, Make dots of different sizes formed on the negative to express the shades of the picture. The mesh structure of this kind of Mesh Screen, in addition to the square shape, there are many other forms, the general specification is 20-80 lines/cm. The Mesh Screen, which is commonly used in intaglio plate making, is made of glass or film. There are white fine lines and crossed lines on the surface to form a grid. During plate making, the adhesive film at the white line hardens after being exposed to light, so it is not corroded and serves as a support for protecting the layout. The general specifications of this Mesh Screen are 60-100 lines/cm. There is also a soft screen with halo dots, which is printed in contact with the photosensitive film and negative during use, which is called a contact screen. In 1886, the Americans Ives and Levy made the cross-hair glass screen for the first time to express the shades of the image.