In this article I will describe the laser Print -iron method (Toner Transfer method) for the production of printed circuit boards PCB, which I myself have been using for quite some time. This method is described on many sites, but since you can already read on my site right here.
Toner transfer method
Step 1. Draw a board on the computer. You can use specialized programs that automatically produce a wiring board according to the concept. I use Sprint-Layout 6.0 , which is a convenient program.
Step2. From single side PCB cut the future of the printed circuit board. Next, the side on which the conductors will be, needs to be cleaned up, at least with the same null one, but I have been doing this with a regular eraser lately. Then the foiled side must be degreased with acetone.
Step 3. On a laser printer, print out the printed circuit board pattern on glossy tissue paper. I use this kind of paper from the catalog of electronic magazines.
Step 4. After the image is printed, we cut out the contour, remembering to leave the margins approximately the width and height of the board. We stack the sheet with the image up. Prepare strips of paper tape about a centimetre long. Next, lay the board with the foil side onto the paper, precisely positioning it along the contour.
Then firmly pressing the board to the paper, carefully wrap the edges of the paper, fixing them with pre-prepared strips of adhesive tape.
Now we take an ordinary iron, turned on at the maximum temperature, and carefully iron the paper board from the side of the drawing.
Step 5. Then put the board with the sticky paper in hot water of about 50 degrees and wait until the paper is softened.
After the paper swells, it must be carefully separated from the board. The remains of paper roll with your finger under water. We check the dried-up board for possible defects, if in some places the toner is still out, it can be finished with a regular permanent marker.
Step 6. We etch our board in ferric chloride. For the etching process to go quickly, the solution must be heated to 40-50 degrees.
Step 7. We remove the toner with acetone, then we drill holes, cover with rosin varnish, and service the contact pads.