| 摘要 |
PURPOSE:To prevent an orienting film from having a dielectric breakdown by arranging an electrostatic discharging brush nearby a rubbing material in contact with or nearby the surface of the orienting film, and grounding the electrostatic discharging brush. CONSTITUTION:The electrostatic discharging brush 15 consists of a housing 15 made of aluminum and the brush 15b fixed on the reverse surface of this housing 15a, and the brush 15b is formed by forming a metallic thin film on the surface of nylon fiber by vapor deposition or sputtering or by weaving carbon fiber. The housing 15a is connected to a support part 17 grounded by a lead wire 18. Static electricity on the surface of the orienting film 11 generated by the rubbing of a rubbing roller 14 is grounded through the electrostatic discharging brush 15 arranged in front of the rubbing roller 14, so the surface of the orienting film 11 is never charged with the static electricity. Consequently, the orienting film never has a dielectric breakdown due to the static electricity. |
