| 摘要 |
PURPOSE:To obtain high photosensitivity and superior sensitivity characteristics covering all the visible light wavelength region by incorporating a specified compd. in an amorphous state. CONSTITUTION:The component in an amorphous state of perylenetetracarboxylic acid diimide (PTCDI) represented by the formula, R being H, alkyl, alkoxy, an aliphatic residue or aromatic residue, is used as a photoconductive material, and incorporated in the resin component for fixing atoner. Such an amorphous PTCDI has high light current/dark current ratio, and accordingly, the toner contg. it is high in photosensitivity. As a result, the toner has light spectral sensitivity in the region of 400-650nm wavelength region, and also superior photosensitivity characteristics in all the visible wavelength resion. Since the amorphous PTCDI can be easily pulverized, it is superior in workability, high in practicable value, and a sharp positive image is obtained by using it. |
