| 摘要 |
<p>PURPOSE:To provide a developer which is difficult to be influenced by environment. CONSTITUTION:The first inorganic oxide which is hydrophobically processed and has the mean particle diameter of 5 to 20nm and the second inorganic oxide which is hydrophobically processed and has the mean particle diameter of 20nm to 2mum are mixedly added into a toner composed of at least a binding resin and a coloring agent. Since the second inorganic oxide which is large in the mean particle diameter and hydrophobically processed is mixedly added, the occurrence of a liquid bridge can be prevented, and since the first inorganic oxide which is small in the mean particle diameter and hydrophobically processed is mixedly added, the fluidity of the toner can be secured.</p> |
