The laser etching process is similar to the manufacture of printed circuit boards, where exposure to UV light transfers an image of a component onto a photoresist-coated metal. The unexposed photoresist is then washed away, leaving the bare metal etched. In tank etching, the prepared board is dipped

1. Alternative introductionLetterpress printing usually adopts copper plate and zinc plate, which is made by engraving or etching to make the required layout, but the quality of engraving layout is still different from that of etching plate. Therefore, the quality of the layout made by pre-coating

Etching is a technique that uses chemical reaction or physical impact to remove materials. Etching techniques can be divided into wet etching and dry etching.It was first used to manufacture copper plate, zinc plate and other printing embossing plates, and also widely used in the processing of weigh