PCB circuitous pattern development exposure method
A PCB board and circuit graphics technology, applied in the field of development and exposure of PCB circuit graphics, can solve the problems of jagged edges of PCB board lines, unclean development, excessive development of PCB boards, etc., to ensure the development effect, speed up the development speed, and ensure Effect of washing and drying speed
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Embodiment 1
[0033] The method for developing and exposing PCB circuit patterns comprises the following steps:
[0034] (1) Prepare the film that matches the PCB board;
[0035] (2) Align and stick the PCB board to the film, and then perform the exposure process;
[0036] (3) After the exposed PCB board is placed for 10 minutes, it enters the next process;
[0037] (4) Use the spray head to spray the developing solution onto the PCB board for development, that is, wash away the parts on the PCB board that are covered by the film during exposure, and the ink will fall off to show the same circuit pattern as the film. The developer is 0.8% concentration of Na 2 co 3 , the temperature of the developer is 25°C, and the spray pressure is 1.2Kg / Cm 2 , developing time is 1min;
[0038] (5) Wash the developed PCB board with water and then dry it.
[0039] Further, the above step (2) is mainly the alignment of the PCB board and the film and the exposure of the PCB board, which specifically in...
Embodiment 2
[0054] The method for developing and exposing PCB circuit patterns comprises the following steps:
[0055] (1) Prepare the film that matches the PCB board;
[0056] (2) Align and stick the PCB board to the film, and then perform the exposure process;
[0057] (3) After the exposed PCB board is placed for 15 minutes, it enters the next process;
[0058] (4) Use the spray head to spray the developing solution onto the PCB board for development, that is, wash away the parts on the PCB board that are covered by the film during exposure, and the ink will fall off to show the same circuit pattern as the film. The developer is 1.2% concentration of Na 2 co 3 , the temperature of the developer is 32°C, and the spray pressure is 2.5Kg / Cm 2 , developing time is 2min;
[0059] (5) Wash the developed PCB board with water and then dry it.
[0060] Further, the above step (2) is mainly the alignment of the PCB board and the film and the exposure of the PCB board, which specifically in...
Embodiment 3
[0075] The method for developing and exposing PCB circuit patterns comprises the following steps:
[0076] (1) Prepare the film that matches the PCB board;
[0077] (2) Align and stick the PCB board to the film, and then perform the exposure process;
[0078] (3) After the exposed PCB board is placed for 12 minutes, it enters the next process;
[0079] (4) Use the spray head to spray the developing solution onto the PCB board for development, that is, wash away the parts on the PCB board that are covered by the film during exposure, and the ink will fall off to show the same circuit pattern as the film. The developer is 1.0% concentration of Na 2 co 3 , the temperature of the developer is 30°C, and the spray pressure is 2.0Kg / Cm 2 , developing time is 1.5min;
[0080] (5) Wash the developed PCB board with water and then dry it.
[0081] Further, the above step (2) is mainly the alignment of the PCB board and the film and the exposure of the PCB board, which specifically ...
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