| 摘要 |
PURPOSE:To obtain an electrification and reflection preventive film which is low in cost and applicable to a large area by setting the film thickness of a binder for bringing superfine particles and a base board into tight adhesion to less than a half as large as a particle size. CONSTITUTION:The supersonic particles are arrayed orderly on the base board to high density and the film thickness of the binder for bringing the superfine particles and base board into tight adhesion is set to less than a half as large as the particle size. This superfine particle film is formed on the base board surface by putting coating liquid 13 obtained by mixing superfine particles having a reflection preventing function and superfine particles having an electrification preventing function together in a bathtub 12 and ascending or descending the base board surface at prescribed speed. In such a case, the coating solution 13 as the mixture of the superfine particles is introduced to a space formed between the coating bathtub 12 and the surface of a cathode-ray tube. After the coating solution 13 filled up in a solution tank 16 is pressurized to cover the cathode-ray tube 11, an overflow valve 15 and a valve 17 for solution supply are closed and a valve 14 for pressure control and a leakage valve 18 are opened to return the coating solution 13 to the solution tank 16. Thus, uniform and continuous ruggedness is formed of the superfine particles on the surface of the cathode-ray tube. |
