Tag Archives: photosensitive film

How to registrate holes on photosensitive film?

Multilayer PCB image process needs several photosensitive film. From our 4MCPCB experience, we should make one film per PCB layer at least. Even some of the special multilayer PCB have a similar layer circuit, also require separate the image phontosentive film. This point may confuse by most green PCB designers. The importance of aligning photosensitive […]

Some common sense of Image the outer layers process of rigid PCB

Image the outer layers process of rigid PCB should be in clean room If you visit a professional rigid PCB factory, you must find many processes in clean room, likely image the outer layer process. But why we should take this step to clean room, or the risk of image outer layer circuit process? We […]