Hi All I posted an interesting patent on a photo resist process. The patent describes applying a non-sensitized (very simple) polymer coating to the pwb, drying and storing. When needed, the board is sensitized by spraying it with the photo-initiator, drying and exposing. The developer is water, the stripper is caustic. Anyone have any experience with or used this ? Comments from the chemists among us on the usefulness of this info would be much appreciated.
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Simple Photoresist Recipe?
2011-03-08 by mtuchelt