US 8,785,098 B2 · Transparent toner for electrostatic latent image development, method for producing the same, electrostatic latent image developer, toner cartridge, process cartridge, and image forming apparatus

Abstract

The invention provides a transparent toner for electrostatic latent image development, containing a polyester resin and a release agent, the difference between an endothermic peak Tm of the release agent in a temperature increasing process and an exothermic peak Tc of the release agent in a temperature decreasing process when measured by an ASTM method with a differential scanning calorimeter (DSC) is from about 40° C. to about 50° C., and the degree of exposure of the release agent at the surface of the toner as determined quantitatively by X-ray photoelectron spectroscopy (XPS) is about 10% or less.

Claims17

Dependent claims

A transparent toner for electrostatic latent image development, comprising a polyester resin and a release agent,

the difference between an endothermic peak Tm of the release agent in a temperature increasing process and an exothermic peak Tc of the release agent in a temperature decreasing process when measured by an ASTM method with a differential scanning calorimeter (DSC) is from about 40° C. to about 50° C., and
the degree of exposure of the release agent at the surface of the toner as determined quantitatively by X-ray photoelectron spectroscopy (XPS) is about 10% or less of the surface area of the toner,
wherein Al is present in the inside of a release agent domain of the transparent toner.

Dependencies are inferred from the claim text.

Facts

Application

12/582,326Filed 20 Oct 2009

Priority

JP 2009-03092113 Feb 2009

Published

US 2010/0209835 A119 Aug 2010

Granted

22 Jul 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

G03G 15/08
For developing: using a solid developer, e.g. powder developer
G03G 9/08755
Comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds: polyesters
G03G 9/08782
Natural macromolecular compounds or derivatives thereof: waxes
G03G 9/08795
Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775: characterised by their chemical…

Transparent toner for electrostatic latent image development, method for producing the same, electrostatic latent image developer, toner cartridge, process cartridge, and image forming apparatus

Life of this patent

Transparent toner for electrostatic latent image development, method for producing the same, electrostatic latent image developer, toner cartridge, process cartridge, and image forming apparatus

Life of this patent

Abstract

Claims17