Electrostatic latent image developer comprising capsule toner of irregular shape, wrinkled surface
AssigneeMinolta Camera Kabushiki Kaisha
InventorsToshitaro Kohri, Junji Machida, Masahiro Anno
Life of this patent
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Abstract
The present invention provides a developer for developing electrostatic latent image which comprises capsule toners and carriers; said capsule toner having many wrinkles or hollows and upheavals and containing liquid in a shell, and the carriers have no sharp edge or a lower specific gravity, the image copied by the developer can be fixed by pressure under low temperature.
Claims18
A developer for developing electrostatic latent image, which comprises:
- (1) a capsule toner having an irregular shape and a wrinkled surface as substantially depicted in FIG. 2, in which a core material comprises at least, a solvent of high boiling point and a resin for fixing and a coloring agent, both of which are dissolved in or dispersed in the solvent, wherein the core material is enclosed in a shell material containing a chargeable resin, said capsule toner having a mean particle diameter of from 3 to 25 microns;
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- (2) a carrier, which has no sharp edge corner, or has a low true specific gravity.
A developer for developing electrostatic latent image, which comprises:
- (1) a capsule toner having an irregular shape and a wrinkled surface as substantially depicted in FIG. 2, in which a core material comprises a resin for fixing a coloring agent, wherein the core material is enclosed in a shell material containing a chargeable resin, said capsule toner having a mean particle diameter of from 3 to 25 microns;
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- (2) a carrier having at least one of a no sharp edge corner and a true specific gravity of from 1.0 to 4.5.
A developer for developing electrostatic latent image, which comprises a toner having an irregular shape and a wrinkled surface as substantially depicted in FIG. 2, in which the toner comprises a resin for fixing and a coloring agent, said toner having a mean particle diameter of from 3 to 25 microns.
Dependencies are inferred from the claim text.