Xerox Corporation

Anthony R Davidson

Francoise M Winnik

Marcel Philippe Breton

Guerino G Sacripante

James McConnell Duff

Paul Joseph Gerroir

Richard P Veregin

Melvin D Croucher

Mitchell Alan Winnik

John W-p Lin

William Riske

A dry toner composition comprised of resin particles, pigment particles, and a dendrimer charge enhancing additive.

Toner compositions with dendrimer charge enhancing additives

Disclosed is an ink composition consisting essentially of water, diethylene glycol-monobutyl ether, glycerol, an optional cyclohexyl pyrrolidinone component, a dye selected from the group consisting of dyes containing dansyl chromophores and dyes containing porphyrin chromophores, an optional biocide, and an optional polyalkylene oxide/bisphenol-A additive.

Colorless fast-drying ink compositions for printing concealed images

An ink composition comprised of a solution comprised of a dye comprised of a porphyrin chromophore.

Ink compositions

An ink composition comprised of a solution comprised of a dye comprised of a porphyrin chromophore and a dendrimer.

Porphyrin chromophore and dendrimer ink composition

A toner composition comprised of resin particles, pigment particles, an optional charge enhancing additive component, or components, and a surface additive, or additives comprised of a metal oxide containing a coating thereover of a surfactant.

Toner and developer compositions with surface additives

Disclosed is an ink composition which comprises an aqeuous liquid vehicle and particles of an average diameter of 100 nanometers or less which comprise micelles of block copolymers of the formula ABA, wherein A represents a hydrophilic segment and B represents a hydrophobic segment, and wherein dye molecules are covalently attached to the micelles, said dye molecules being detectable when exposed to radiation outside the visible wavelength range. Optionally, silica is precipitated within the micelles. In a specific embodiment, the dye molecules are substantially colorless. In another specific embodiment, the ink also contains a colorant detectable in the visible wavelength range.

Inks containing block copolymer micelles

An ink composition comprised of a solution comprised of a dendrimer and a dye or dyes.

An ink composition comprising a solution with a dendrimer colored with a dye or dyes covalently attached thereto. As optional additives there may be included in the ink humectants and biocides. The aforementioned inks can be prepared by mixing the appropriate components such as a dendrimer, water and a reactive dye. Also disclosed is a process for the utilization of the aforementioned compositions and ink jet printing processes.

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Agincourt, Canada

Anthony R Davidson