| 摘要 |
<p>PURPOSE:To obtain a toner having a good transfer efficiency with a small amt. of waste toner with which high density images without fog can be obtd. by incorporating a silicon complex and titanium oxide or alumina treated with a silicon surface treating agent into the toner. CONSTITUTION:The toner contains a complex compd. of silicon atom with coordination of aromatic diol, aromatic hydroxycarboxylic acid or aromatic dicarboxylic acid which can form a chelate, and further the toner contains fine particles of titanium oxide or alumina treated with a silicon surface treating agent. By using the silicon complex and fine particles of titanium oxide or alumina treated with a silicon cotg. surface treating agent, a charge amt. suitable for transfer can be stably obtd. Namely, titanium oxide or alumina gives a function to suppress charged with increase of contact frequencies, while the electrification property of the toner base containing the silicon complex changes with increase of contact frequencies. Change in the electrification property of the toner base and change in the electrification property of titanium oxide or alumina compensate each other to give a stable charge amt. suitable for transfer.</p> |
