Toner
AssigneeKYOCERA Document Solutions Inc.
InventorHaruhiro Nishitera
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Abstract
A toner includes a plurality of first particles and a plurality of second particles. The first particles and the second particles each include a core and a shell layer covering a surface of the core. The cores of the first particles contain a binder resin and a colorant. The cores of the second particles contain a releasing agent. A standard deviation of a volume-based particle size distribution of the toner is no greater than 1.28. An area ratio of regions of the cores of the second particles that are occupied by the releasing agent in a cross-sectional image of the second particles is at least 50%. A number ratio of the second particles is at least 5% and no greater than 25% relative to a total number of the first particles and the second particles.
Claims8
A toner comprising toner particles including a plurality of first particles and a plurality of second particles, wherein
- the first particles and the second particles each include a core and a shell layer covering a surface of the core,
- the cores of the first particles contain a binder resin and a colorant,
- the cores of the second particles contain a releasing agent,
- a standard deviation of a volume-based particle size distribution of the toner is no greater than 1.28,
- an area ratio of regions of the cores of the second particles that are occupied by the releasing agent in a cross-sectional image of the second particles is at least 50%, and
- a number ratio of the second particles is at least 5% and no greater than 25% relative to a total number of the first particles and the second particles.
Dependencies are inferred from the claim text.