Quickbuying 15CMX2M PCB Portable Photosensitive Dry Film for Circuit Photoresist Sheets for PCB Board with Release Agent and Developer

Name: 15cm x 2m Length Photosensitive Dry Film Replace Thermal Transfer For PCB BoardDescription:Model: 556412Product DescriptionMaterial:Photosensitive materialColor: GreenWidth: 15cmLength: 2mHow to use (Instructions)1. Polished copper clad laminate, this simple, with the finest water mill sandpaper polished clean on the line. (This step is not necessary, as long as the board is not like oil, can save this step)2. Exposing film, photographic film is sandwiched between the two films, the first tear can tear with a transparent adhesive tape, try a few on the line.3. And then film, apply a little copper can be clean, flat, try not to have bubbles.4. Paste the film used after the press, not too hot, fixed from 100 degrees.5. Printed circuit board film, the proposal is to use film, you can achieve the highest degree of precision, if the accuracy did not require the use of sulfuric acid paper to print. (Figure is the next high-precision inkjet film)6. The printed circuit diagram on the photosensitive plate, (Note: dry film is negative, so to reverse printing, which is usually used with our photosensitive plate is the opposite) with about 10 ordinary energy-saving lamps, if there is exposure Machine 1 minute on the line, the sun has not tried, it should be 30 seconds -60 seconds or so, the exposure process is obvious, because the photosensitive film will change color in the exposure, from light to dark blue. You will easily see your circuit diagram appear on the board.7. The development, tear off the protective film on the panel, into the developer (developer by 1: 100,10 g total 1L of water) can be used to develop a little stick with a cotton bar rubbing plate.8. Etching, this Needless to say (ferric chloride, environmental etchant, hydrochloric acid + hydrogen peroxide, etc.) recommend the shop\'s environmental etching, fast, clean, no smell.9.After etching the CCL,