| 摘要 |
PURPOSE:To prevent generation of noise owing to electrification and to permit smooth traveling of a tape by forming integrally a case body of an erasing head and the surface of said head contacting slidingly the tape of a molded material added with an antistatic material to set up the sheet resistance of the material to a designated value. CONSTITUTION:A case body 10 is formed integrally with a surface contacting slidingly a tape having a gap 12. The material constituting said body is added adequately with an antistatic agent to regulate the sheet resistance value to 10<10>OMEGA/cm<2>. (3-Lauramide propyl)trimethyl ammonium methyl sulfate and other compd. are used for the antistatic agent. Generation of noise owing to electrification is thus prevented and the smooth traveling of the tape is assured. |
