| 摘要 |
PURPOSE:To copy different kinds of information in normal-character and braille- type methods, by forming electrostatic latent images, reversed in polarity, on a photoreceptor with two photoconductive layers and by developing them with normal toner and foamy toner. CONSTITUTION:A photoreceptor 1 has piled photoconductive layers 11 and 12 on a conductive base 10, and is so adjusted that when it is irradiated with light in specific color, such as red, either photoconductive layer is conducted chiefly. After those photoconductive layers 11 and 12 are charged in the reverse direction, an original O wherein information on normal characters is entered in black and that on braille types in red is exposed to form electrostatic latent images reversed in polarity. Then, normal toner and foamy toner are visualized and heating and fixing are performed. Thus, different kinds of information by braille-type and normal-character methods are copied on the same copying paper. |
