| 摘要 |
<p>PURPOSE: To obtain such a toner that even when mechanical compressive force is given to the toner in a toner recycling system, the state of an external additive present on the surfaces of color particles is hardly changed and a stable charge amt. can be maintained, by incorporating such resin fine particles that are charged in the same polarity as that of the color particles and have a specified range of the primary number average particle size and specified or higher compressive strength. CONSTITUTION: This toner is used for an image forming method which adopts a toner recycling system. The toner contains a fluidizing agent, color particles containing a binder resin and coloring agent, and resin fine particles which can be charged into the same polarity with the color particles and has 0.03-2.0μm primary number average particle size and >=9.0kfg/mm<2> compressive strength. The toner recycling system, for example, is equipped with toner carrying screws 16-18 each having the rotation axis inside and spiral vanes along the rotation axis. The toner is successively carried by the vanes while the axis rotates. The recovered toner is again supplied to develop a latent image on a photoreceptor 14.</p> |
