LIGHTING DEVICE,申请号JP19850018096-传众专利搜索

LIGHTING DEVICE

申请公布号：JPS61177476(A)

申请号：JP19850018096

申请日期：1985.02.01

申请公布日期：1986.08.09

申请人：

CANON INC

发明人：YANO HIDEAKI

分类号：G03G15/04;G03G15/043;G03G15/047;G03G21/00

主分类号：G03G15/04

摘要：PURPOSE:To eliminate deterioration and deficiency of picture quality and, at the same time, to prevent useless consumption of toner, by providing lens members on an image carrier side from light intercepting members and performing reflection preventing treatment on the light intercepting members. CONSTITUTION:Light intercepting members 13 are formed in black color by mixing a black pigment into a synthetic resin so as to prevent reflection of lights from the surface of the members 13 irradiated by lights. Therefore, diffusion and reflection of lights at the surface of the light intercepting members 13 are prevented. Luminous fluxes radiated from LEDs 12 are narrowed their spread angles theta after they are shaped to rectangular luminous fluxed by means of the light intercepting members 13, on which the reflection preventing treatment is performed, and irradiated upon an image carrier 6 in the shape of a rectangle with high intensity of illumination. No other luminous flux does reach the image carrier 6. Therefore, the light quantity distribution on the surface of the image carrier 6 becomes such that no light is leaked to an image area A and only a no-image area B can be illuminated sharply with high intensity of illumination. Therefore, the electricity can be removed uniformly from the no-image area B.