Toner
AssigneeCanon Kabushiki Kaisha
InventorsDAI NOZAKI, MASAYA KOMURO, KENJI OOKUBO
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Abstract
A toner includes: a toner particle including a pigment; a resin particle; and an external additive. The resin particle has specific brightness average value and average circle-equivalent diameter, the brightness average value of the toner particle falls within a specific range, the pigment is a black pigment, the number of the resin particle falls within a specific range, and the toner particle and the resin particle each have at the surface thereof a PET structure. In the load displacement curve obtained by micro compression measurement of the resin particle, 90 number % or more thereof each do not have a fracture point at a load within a range of 0 to 10 mN.
Claims10
A toner comprising:
- a toner particle comprising a pigment;
- a resin particle;
- and
- an external additive, wherein
- a brightness average value on the basis of a monochrome 256 gradation of the resin particle is 90 to 120, and an average circle-equivalent diameter of the resin particle is 0.5 to 3.0 μm,
- a brightness average value on the basis of a monochrome 256 gradation of the toner particle is 40 to 80,
- the pigment is a black pigment,
- a number of the resin particle in the toner is 5 to 40 for every 100 toner particles,
- the toner particle comprises at a surface thereof a resin having a repeating structure of a structure expressed by formula (1) below,
- the resin particle comprises at a surface thereof a resin having a repeating structure of a structure expressed by formula (1) below, and
- in a load displacement curve obtained by micro compression measurement of the resin particle,
- 90 number % or more of the resin particle does not have a fracture point at a load within a range 0 to 10 mN.
Dependencies are inferred from the claim text.