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Drawings or data provided by customers are converted and input by CAD system. Accurate image is laser-plotted onto photosensitive films or photographic glass plates based on the data. Plotted pattern is strictly checked and then passed to UV exposure process. These processes are completed in a very short time. |
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Metals are degreased and cleansed to remove oil and contamination completely in order to obtain good adhesion to the photosensitive resist. Cleansing method varies depending on the type of material. |
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UV light-sensitive resist films are applied to both sides of cleansed metal evenly in the clean room. |
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The metal coated with light-sensitive resist film is sandwiched between photo tools which carry the component image, then is exposed to UV light from top and bottom in order to transfer the image onto the coating. We operate this process in the clean room to avoid dust and foreign materials on the resist coating. |
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Resist film on non UV-exposed area is chemically removed. In addition, the resist coated area is heated to improve acid resistance. |
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Automatic etching machines which control etchant and temperature are used in this process.
Metal-exposed area which is not protected by resist coating is etched away, and the metal is formed into the requested shape as specified in the drawing. |
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All the resist film left on the metal sheet is removed after etching. Products are cleansed by the stripping machine and then passed to the inspection process |
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Photo-etching products are expected to be highly accurate. We control best quality by dimensional and appearance inspection. |
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