9 steps of PCB copy technology

The first step, get a piece of PCB, first recorded on the paper all the pieces of the model, parameters, as well as location, especially the direction of the diode, triode, IC notch direction. It is best to use a digital camera to take a picture of the two Zhang Yuan gas position.


The second step, remove all the devices, and the PAD hole in the tin removed. PCB will be cleaned with alcohol, and then put into the scanner, start the POHTOSHOP, the screen will be printed in a color way, and print out the spare.


The third step, this will be TOP LAYER and BOTTOM water LAYER two layer slightly polished, shiny polished to a copper film into the scanner, start PHOTOSHOP, two layers with color scanning. Note that PCB placed in the scanner must be flat straight, otherwise the scanned image can not be used, scanner resolution, please select 600.


The fourth step, adjust the canvas contrast, brightness, so that part of the copper film and not part of the copper film contrasting, then this figure into black and white, check the line is clear, if not clear, repeat this step. If clear, will survive in the black and white BMP format TOP.BMP and BOT.BMP. With the image processing software will be the size of the image to the original size of 38.64 times, and then use BMP to convert PCB software. Note: BMP images to be stored in black and white format, do not store into other color format, or BMP to PROTEL file software can not be converted.


The fifth step, the two BMP format files into PROTEL format and transferred to two layers in PROTEL, such as the position of basic coincidence two layers of PAD and VIA, showed that the first few steps to do well, if there is a deviation, repeat step third.


The sixth step, the TOP. BMP into TOP. PCB, be sure to switch to the SILK layer, which is the yellow layer, and then you are on the TOP layer tracing line, and according to the second step of the drawing device placement. After the completion of the SILK layer will be deleted.


The seventh step, the BOT. BMP into BOT. PCB, be careful to switch to the SILK layer, the yellow one, and then you're on the BOT layer. After the completion of the SILK layer will be deleted.

The eighth step, in PROTEL, TOP. PCB and BOT. PCB transferred into a map on the OK.


The ninth step, using a laser printer TOP LAYER, BOTTOM LAYER print to transparencies (1:1 ratio), the film on the piece of PCB, compare whether the error, if yes, you will be accomplished.


 

(Source: internal information)

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