Toner and image forming apparatus using the same
AssigneeSeiko Epson Corporation
InventorHiroshi Toyama
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Abstract
A non-magnetic mono-component toner of the present invention comprises, at least, a plurality of mother particles and a plurality of CCA particles adhering to the mother particles. The non-magnetic mono-component toner satisfies a×d<2.5, wherein “a” is the inclination of an approximation straight line of the CCA particles adhering to the mother particles, obtained by approximating distribution of particle diameter of the CCA particles relative to the particle diameter of the mother particles by the least-square method, and “d” (μm) is the volume-based mean particle diameter of the toner. Therefore, the charge on one particle of the non-magnetic mono-component toner can be efficiently reduced, thereby allowing lower developing voltage and achieving reduction in developing hysteresis.
Claims10
A non-magnetic mono-component toner comprising, at least, a plurality of mother particles and a plurality of CCA particles which are attached to the mother particles,
- said non-magnetic mono-component toner being characterized by satisfying the following equation:
- a×d<2.5
- wherein “a” is the inclination of an approximation straight line of said CCA particles adhering to said mother particles, obtained by approximating distribution of particle diameter of said CCA particles relative to the particle diameter of said mother particles by the least-square method, and “d” (μm) is the volume-based mean particle diameter of said toner.
A toner comprising, at least, a plurality of mother particles and a plurality of additives which are added to the mother particles,
- said toner being characterized by that the liberation ratio of liberated additives liberated from said mother particles is set to be equal to or less than a specified value corresponding to the additives.
Dependencies are inferred from the claim text.