One of the circuit board manufacturing processes refers to the screen printing preparation project. In order to make the mesh on the regenerated screen plate have better adhesion with the stencil or the emulsion, the used net must be used. The cloth is bleached or fine gold steel sand as a builder, which is brushed and washed and roughened for recycling, which means rinsing.
One of the circuit board manufacturing processes refers to the screen printing preparation project. In order to make the mesh on the regenerated screen plate have better adhesion with the stencil or the emulsion, the used net must be used. The cloth is bleached or fine gold steel sand as a builder, which is brushed and washed and roughened for recycling, which means rinsing.
Radiology terminology. The process of fixing the film after washing with water to remove the residual complex of sodium thiosulfate and a small amount of silver is also called water washing. Rinsing is an important step in ensuring film quality and long-term preservation. On the surface or/and inside of the fixed film emulsion layer, if the residual sodium thiosulfate is not washed away, it will react with CO2 and water in the air to decompose sulfur, and sulfur and silver react to form brownish yellow silver sulfide, so that the image Turn yellow. Moreover, films that have not been washed or washed thoroughly will produce toxic hydrogen sulfide gas during long-term storage, further fading the image and turning the film yellow.
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