Position reading devices such as optical encoders are most essential components in numerical control (NC) machines and robots. Fabrication process of optical NC-scales was developed for domestic production. The whole process using photo-lithographic t...
Position reading devices such as optical encoders are most essential components in numerical control (NC) machines and robots. Fabrication process of optical NC-scales was developed for domestic production. The whole process using photo-lithographic techniques consists of about 10 steps. The process parameters were to be carefully determined through many trial experiments. The scale marks of metal film was printed on a glass substrate. The optimum values of various process parameters were extrilcted. The quality of scale marks was attributed to the each process parameters.