What are the precautions for the use of photosensitive ink during etching？

The main problems that should be paid attention to in the process of using photosensitive ink before etching are as follows:

1. Drying temperature and time: In order to achieve the effect of coating, a certain amount of solvent will be added to the photosensitive ink as dilution to adjust the viscosity before coating. After the surface, it needs to be cleaned up and the thinner in the ink is removed by circulating hot air oven and hot air duct. It is very important to master the drying temperature and drying time.

2. Use the correct photosensitive light source: UV light is the external condition for ink imaging. If the wavelength of the light source is not within the range of UV light, the photosensitive ink will not absorb it, and UV light can cause the photosensitive ink to have a chemical reaction. Glass will absorb ultraviolet light below 300nm, so it is necessary to use a strong light source above 300nm.

3. Humidity and time of development: The photosensitive ink is mainly composed of resin, and the resin is hydrophilic and has good solubility in alkaline aqueous solution. It can be developed with 1%-1.5% sodium carbonate aqueous solution, and the ink without photosensitive reaction can be used for development. dissolve. During the development process, the temperature has a great influence on the speed of ink dissolution, so increasing the development temperature will have a much faster effect on the development speed than the concentration of the sodium carbonate aqueous solution submitted. between.

The above are the matters that should be paid attention to in the exposure and development of photosensitive inks in etching processing. Of course, there are also the influence of equipment and operators, so when we are looking for etching manufacturers, we will choose etching manufacturers with rich industry experience and complete processing equipment.Topower Etching has more than 10 years processing technology, which can provide high quality etching plates and etching technology knowledge.