Color toner
First Claim
1. A color toner comprising toner particles which comprise toner base particles containing at least a binder resin, a colorant and a wax, and inorganic fine particles, wherein;
- (i) in said toner base particles, particles having a circle-equivalent diameter of 3.00 μ
m or more as measured with a flow type particle image analyzer have an average circularity of from 0.920 or more to less than 0.950;
(ii) in the particles having a circle-equivalent diameter of 3.00 μ
m or more in said toner base particles, particles having a circularity of 0.960 or more are in a number frequency cumulative value of 40% or less; and
(iii) in the particles having a circle-equivalent diameter of 3.00 μ
m or more in said toner base particles, particles having a circularity of 0.920 or less are in a number frequency cumulative value of 30% or less.
1 Assignment
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Accused Products
Abstract
In a color toner having toner particles which have toner base particles containing a binder resin, a colorant and a wax, and inorganic fine particles, (i) in the toner base particles, particles having a circle-equivalent diameter of 3.00 μm or more as measured with a flow type particle image analyzer have an average circularity of from 0.920 or more to less than 0.950, (ii) in the particles having a circle-equivalent diameter of 3.00 μm or more in the toner base particles, particles having a circularity of 0.960 or more are in a number frequency cumulative value of 40% or less; and (iii) in the particles having a circle-equivalent diameter of 3.00 μm or more in the toner base particles, particles having a circularity of 0.920 or less are in a number frequency cumulative value of 30% or less. Also disclosed is a full-color image forming method making use of the toner.
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Citations
13 Claims
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1. A color toner comprising toner particles which comprise toner base particles containing at least a binder resin, a colorant and a wax, and inorganic fine particles, wherein;
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(i) in said toner base particles, particles having a circle-equivalent diameter of 3.00 μ
m or more as measured with a flow type particle image analyzer have an average circularity of from 0.920 or more to less than 0.950;(ii) in the particles having a circle-equivalent diameter of 3.00 μ
m or more in said toner base particles, particles having a circularity of 0.960 or more are in a number frequency cumulative value of 40% or less; and(iii) in the particles having a circle-equivalent diameter of 3.00 μ
m or more in said toner base particles, particles having a circularity of 0.920 or less are in a number frequency cumulative value of 30% or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A full-color image forming method which forms an image by the use of at least a magenta toner, a yellow toner, a cyan toner and a black toner;
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said toners each being a color toner comprising toner particles which comprise toner base particles containing at least a binder resin, a colorant and a wax, and inorganic fine particles, wherein; (i) in said toner base particles, particles having a circle-equivalent diameter of 3.00 μ
m or more as measured with a flow type particle image analyzer have an average circularity of from 0.920 or more to less than 0.950;(ii) in the particles having a circle-equivalent diameter of 3.00 μ
m or more in said toner base particles, particles having a circularity of 0.960 or more are in a number frequency cumulative value of 40% or less; and(iii) in the particles having a circle-equivalent diameter of 3.00 μ
m or more in said toner base particles, particles having a circularity of 0.920 or less are in a number frequency cumulative value of 30% or less.
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Specification