source:Other information release time:2023-07-03 Hits: Popular:PCB Assembly company
The commonly used photosensitive materials for printing plates include diazo photosensitive agents, photosensitive films, etc. The diazo type photosensitive emulsion is commonly used in screen printing. The photosensitive film has the characteristics of uniform and controllable film thickness, high resolution, high clarity, wear resistance, and strong adhesion to the screen, and is widely used in character printing of printed boards. The requirements for photosensitive materials in PCB screen printing plates are: good plate making performance, such as easy coating; There is an appropriate photosensitive spectral range, generally ranging from 340 to 440mm. The photosensitive wavelength is too long, and plate making operations and storage require strict darkroom conditions; If the wavelength is too short, the selection of light sources and personnel protection will become more difficult; High sensitivity, which can achieve energy-saving and rapid plate making purposes: good development performance, high resolution, good stability, easy storage, and reduced waste: economical, hygienic, non-toxic, and pollution-free.
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