How to make circuit boards with transfer paper and copper clad laminate
To transfer the production of circuit boards need to prepare the following items: thermal transfer paper (backing paper available stickers instead, but can not use ordinary A4), CCL, laser printer (must be a laser printer, no other printer), heat transfer machine (available iron instead), oil mark pen (must be mark pen. Oily ink ink not), sandpaper, bench drill, corrosion drug (ferric chloride or ammonium persulfate etc.), plastic containers.
Print the PCB line on the smooth surface of the heat transfer paper using a laser printer. You need to set the mirror when you print the top line.Sanded the surface of the copper plate with sandpaper and wash it with water and blow dry.The thermal transfer paper printing surface toward the copper surface of CCL, and use the package or adhesive tape, the thermal transfer paper firmly fixed on CCL, must be fixed, ensure not between paper and CCL transfer process of any relative movement. At the same time, make sure the printing surface is smooth and free of wrinkles.Turn on the power and heat transfer machine set temperature, preheating machine, the CCL wrapped transfer paper is inserted into the transfer machine rollers gap, according to the situation of transfer 1~10 times (and the related factors of temperature, the quality of machine toner). If an electric iron is used for transfer, the iron is raised to the highest temperature, and then the surface of the copper clad sheet of the transfer paper is pressed repeatedly until all areas are uniformly pressed.
After the transfer is finished, wait for the temperature to cool the copper plate below 40 degrees (not hot), tear off the transfer paper carefully and check the transfer effect. If the transfer after a small number of wires missing, you can use an oil marker to repair, but if the missing area is larger, the overall transfer effect is poor, you can only give up, after grinding, re transfer. Be sure to remove the transfer paper after cooling! In high temperature, the direct tear will cause the plastic film of transfer paper to attach to the copper plate, resulting in the failure of the production!
