Xerox Corporation

University of Maine System

Orono Spectral Solution, Inc.

Carl P Tripp

Marcel Philippe Breton

Richard P N Veregin

Richard P Veregin

Thomas Edward Enright

Michael F Cunningham

James R Combes

Maria V McDougall

Guerino G Sacripante

Shadi L Malhotra

Hadi K Mahabadi

Raymond W Wong

Gordon K Hamer

John A Creatura

Anthony J Paine

Danielle C Boils

Fatima M Mayer

Pudupadi R Sundararajan

James P Bareman

T Brian McAneney

Maria N V McDougall

H Bruce Goodbrand

Daniel A Foucher

Jaan Noolandi

Susanne Birkel

Michael L Hair

Luke Doucette

Brian J Ninness

Sofian M Kanan

C V Gopal Reddy

This invention relates to a detection system for particles suspended in a gas. The detection system includes an electrostatic precipitator constructed to collect the particles from the gas onto a collection surface using the force of an induced electrostatic charge on the particles. The detection system also includes an optical probe coupled with the electrostatic precipitator and constructed to probe the particles with a beam in order to detect the particles. The body of the electrostatic precipitator has a geometry that allows the beam to travel from the optical probe to the collection surface.

Detection system for airborne particles

This invention relates to a detection system for detecting an analyte in a fluid medium. The detection system comprises a substrate that provides mechanical stability and is sized and shaped to intercept an infrared beam. A reactive material is coated on the substrate. When contacted with the analyte in the fluid medium, the reactive material reacts with the analyte and is altered. The detection system also comprises an infrared spectrometer producing the infrared beam that passes through the reactive material to a detector of the spectrometer. The alteration of the reactive material allows the spectrometer to identify and quantify the analyte. In one embodiment, the reactive material irreversibly reacts with the analyte. In another embodiment, the spectrometer is a non-ATR infrared spectrometer. In a further embodiment, the substrate is a disposable substrate.

Detection system for detecting an analyte in a fluid medium

Methods of increasing the relative concentration of a target molecule in a gas stream, so that it can be more easily detected by a semiconducting metal oxide based sensor. A gas stream is passed through an adsorbent, the stream containing molecules of the target molecule in a mixture containing molecules of at least one non-target molecule. Both the target and non-target molecules are adsorbed on the adsorbent. Another gas stream containing molecules of a chemical displacer is passed through the adsorbent, the molecules of the chemical displacer adsorbing on the adsorbent to selectively displace the target molecules from the adsorbent while leaving the non-target molecules adsorbed. The chemical displacement causes the displaced target molecules to enter the gas stream. The gas stream can then be passed through a semiconducting metal oxide based sensor to detect the target molecules.

Selective filtration and concentration of toxic nerve agents

An ink composition containing (1) an oxazoline compound with, for example, a melting point of from about above 60&deg; C. to about 120&deg; C. and with, for example, an acoustic-loss value of from about 25 to about 80 dB/mm; (2) a carbamate; (3) an alcohol compound; (4) a lightfastness component; (5) a lightfastness antioxidant; and (6) a colorant.

Ink compositions

Disclosed is an apparatus for depositing a particulate marking material onto a substrate, comprising (a) a printhead having defined therein at least one channel, each channel having an inner surface and an exit orifice with a width no larger than about 250 microns, the inner surface of each channel having thereon a hydrophobic coating material; (b) a propellant source connected to each channel such that propellant provided by the propellant source can flow through each channel to form propellant streams therein, said propellant streams having kinetic energy, each channel directing the propellant stream through the exit orifice toward the substrate; and (c) a marking material reservoir having an inner surface, said inner surface having thereon the hydrophobic coating material, said reservoir containing particles of a particulate marking material, said reservoir being communicatively connected to each channel such that the particulate marking material from the reservoir can be controllably introduced into the propellant stream in each channel so that the kinetic energy of the propellant stream can cause the particulate marking material to impact the substrate, wherein either (i) the marking material particles of particulate marking material have an outer coating of the hydrophobic coating material; or (ii) the marking material particles have additive particles on the surface thereof, said additive particles having an outer coating of the hydrophobic coating material; or (iii) both the marking material particles and the additive particles have an outer coating of the hydrophobic coating material.

Marking materials and marking processes therewith

A carrier comprised of a carrier core, optional polymer coating, and fluorosilanated pigment coating.

Carrier particles with halosilanated pigments

An ink composition comprised of (1) a solid oxazoline compound with a melting point of from about 60.degree. C. to about 120.degree. C. and an acoustic-loss value of from about 25 to about 80 dB/mm; (2) a carbamate compound with a melting point of from about 25.degree. C. to about 100.degree. C.; (3) an alcohol compound; (4) a lightfastness component; (5) a lightfastness antioxidant; and (6) a colorant.

A process which comprises maintaining a mixture of carbon dioxide, surface treating agent and colorant at a temperature of from about -10.degree. C. to about 200.degree. C., and optionally removing carbon dioxide.

Processes for the preparation of colorants

An ink composition comprised of a colorant and a phase change vehicle derived from the reaction product of a resin containing at least one furan moiety and at least one maleimide moiety, and wherein said ink possesses a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 100.degree. C. to about 180.degree. C.

Phase change ink compositions

Disclosed is an ink composition which comprises an aqueous liquid vehicle, a pigment, and a vesicle-forming lipid, wherein vesicles of the lipid are present in the ink.

Pigmented ink compositions containing liposomes

A process which comprises heating at a temperature of from about 31.degree. C. to about 200.degree. C. a mixture of supercritical carbon dioxide, metal or metal oxide, and a surface treating component, optionally removing carbon dioxide, and optionally cooling.

Supercritical processes

A process which comprises heating at a temperature of from about -60.degree. to about 31.degree. C. a mixture of liquid carbon dioxide, metal or metal oxide, and a surface treating component, and optionally removing carbon dioxide.

Processes for toner additives with liquid carbon dioxide

A toner composition comprised of resin and pigment particles where the pigment particles are treated with a fluorosilane polymer.

Growing community of inventors

Orono, ME, United States of America

Carl P Tripp