Developing roller, toner and image forming apparatus

• Main Authors: YASUNAGA HIDEAKI, JURI KEIICHIRO, MATSUSHITA MAKOTO
• Format: Patent
• Language: Chinese; English
• Published: 05.10.2016
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

The present invention relates to a developing roller, a toner and an image forming apparatus. One object of the present invention is to provide a developing roller capable of suppressing anchorage on the regulation blade and filming on the developing roller even in a high-speed printing and long-life image forming system using a low-temperature fixable toner. A developing roller includes a conductive axis body; a conductive elastic layer forming at the periphery of the conductive axis body; and a toner bearing layer forming at the periphery of the conductive elastic layer. The developing roller is characterized in that the toner bearing layer has a surface dispersed with particles having an average particle diameter of from 11 nm to 40 nm, and the rotary torque of the developing roller is from 2.5 N to 3.5 N. 本发明涉及显影辊，调色剂以及图像形成装置。本发明的课题在于，提供即使使用低温定影性优异的调色剂实行高速/长寿命化、也能使得同时满足限制刮板固结和结膜的抑制的显影辊。本发明的显影辊包括：导电性轴体，形成在该导电性轴体的外周的导电性弹性层，以及形成在该导电性弹性层的外周的调色剂载置层，本发明显影辊的特征在于，上述调色剂载置层在表面分散有平均粒径11～40nm的粒子，上述显影辊的转矩为2.5～3.5N。