Color image forming method using flattened toner
AssigneeKonica Corporation
InventorsKunio Shigeta, Yotaro Sato, Satoshi Haneda
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Abstract
A color image forming method in which a color toner image is formed through superposing toner images of three color toners of yellow, magenta, and cyan and a black toner, wherein any one of the color toners is a flattened toner composed of particles each having an equivalent circle diameter d of 5 to 10 (μm) when viewed from a direction to make a projection area maximum, a thickness t of 1 to 4 (μm), and a flattening ratio d/t of 2 to 8 represented by a ratio of the equivalent circle diameter d to the thickness t, and the flattening ratio d/t of the particles of the color toners is larger than the flattening ratio dk/tK of the particles of the black toner.
Claims22
A color image forming method for forming a color toner image, comprising the steps of:
- forming toner images of three color toners of yellow, magenta, and cyan and a black toner;
- and
- superposing the toner images, thereby forming the color toner image,
- wherein any one of said color toners is a flattened toner composed of particles each having an equivalent circle diameter d of 5 to 10 (μm) when viewed from a direction to make a projection area maximum, a thickness t of 1 to 4 (μm), and a flattening ratio d/t of 2 to 8 represented by a ratio of said equivalent circle diameter d to said thickness t, and
- wherein the flattening ratio d/t of the particles of said color toners is larger than a flattening ratio dk/tk of the particles of said black toner, where dk and tk represent an equivalent circle diameter and an thickness, respectively, of the particles of said black toner.
Dependencies are inferred from the claim text.