Abstract: A method for manufacturing carrier core particles for electrophotographic developer including a slurrying step (A) of making an iron-containing raw material and a strontium-containing raw material into slurry, a granulation step (B) of granulating the slurry mixture obtained in the slurrying step, and a firing step (C) of firing a powdery material, which is obtained by granulating the slurry mixture in the granulation step, at a predetermined temperature to form a magnetic phase. The slurrying step makes the iron-containing raw material into the slurry containing the iron-containing raw material having a volume diameter D50 of 1.0 to 4.0 ?m and a volume diameter D90 of 2.5 to 7.0 ?m, and makes the strontium-containing raw material into the slurry so that the carrier core particles for electrophotographic developer contain 0<y?5000 ppm, where y denotes the content of the strontium in the carrier core particles.
Abstract: A toner and method for making a toner that includes an amorphous resin, a crystalline resin, and a cyanine dye. The cyanine dye improves heat cohesion without negatively effecting other desirable properties.
Type:
Grant
Filed:
March 5, 2010
Date of Patent:
July 17, 2012
Assignee:
Xerox Corporation
Inventors:
Ke Zhou, Cuong Vong, Edward Graham Zwartz, Karen A. Moffat
Abstract: A magenta toner for developing an electrostatic image composed of a binder and a colorant is disclosed. The toner contains a tone controlling agent having a peak of fluorescent spectrum from 380 to 500 nm. An image excellent in light fastness and durability can be obtained and high color reproducibility with sufficient transparency and chromaticness can be realized by the magenta toner.
Type:
Grant
Filed:
March 7, 2008
Date of Patent:
November 22, 2011
Assignee:
Konica Minolta Business Technologies, Inc.
Abstract: A process for making a resin emulsion suitable for use in forming toner particles including an oil component incorporated into the latex core of the toner particles.
Type:
Application
Filed:
December 2, 2009
Publication date:
June 2, 2011
Applicant:
XEROX CORPORATION
Inventors:
Valerie M. Farrugia, Kimberly D. Nosella, Edward Graham Zwartz, Barkev Keoshkerian
Abstract: A composition comprising a toner binder and a charge control agent comprising a sulfonation product of Solvent Blue 23, wherein from greater than 0 up to 30 mole % of the Solvent Blue 23 is sulfonated.
Type:
Grant
Filed:
April 27, 2004
Date of Patent:
October 28, 2008
Assignees:
XSYS Print Solutions US LLC, Morimura Chemicals Ltd
Inventors:
Gary Don Ellis, Rhonda Sue Bartram, Edward William da Ponte, Toshihiko Oguchi, Timothy Alan Overway, Keiki Suganami
Abstract: The present invention relates to a toner useful, for example, for visualizing an electrostatic latent image formed on an image bearing member by a method such as electrophotography and electrostatic recording methods.
Abstract: This invention provides a magenta toner obtaining a sharp color and having a high coloring power and superior transparency and light-fastness.
Abstract: The present invention relates to a toner useful, for example, for visualizing an electrostatic latent image formed on an image bearing member by a method such as electrophotography and electrostatic recording methods. In addition, the present invention also relates, without limitation, to a developer including a toner, a developing method using a toner and a method of preparing the toner.
Abstract: In a color toner for forming an image, comprising at least a binder resin and a colorant, light-absorbing fine composite particles comprising core particles and at least two coating layers having different refractive indexes laminated on the surface of the core particles or other IR-absorbing compounds such as an azulene compound having a specific structure are used as an infrared absorbing compound. The color toner is used in an electrophotographic color image forming apparatus using a photofixing system for fixing a toner image.