Eastman-kodak Company

Nexpress Solutions, Inc.

Susan A Visser

Paul M Borsenberger

Donald Saul Rimai

Suryadevara Vijayakumar Babu

Charles Eugene Hewitt

Jeffrey F Taylor

William B Vreeland

Jeanne Ellen Kaeding

Elizabeth G Burns

Hwei-Ling Yau

Michel Frantz Molaire

Wayne Thomas Ferrar

John J Fitzgerald

David Steven Weiss

Tonya D Binga

Bruce J Murray

Lan B Thai

Elmer C Flood

Michael W Fichtner

Cancheepuram V Srividya

Richard John Kosakowski, Jr

Robin J Cowdery-Corvan

A process for reducing image defects in an electrostatographic image resulting from particulate contamination. A primary imaging member, including a photoconductive element and an outermost layer of silicon carbide, is uniformly charged in an electrostatographic imaging apparatus subject to particulate contamination. The electrostatographic imaging apparatus includes a charging station, an exposing station, at least one developing station, and a transfer station comprising an electrically biased roller transfer assembly. The primary imaging member is exposed imagewise at the exposing station to form a latent image on the imaging member, which is thereafter developed with toner at the developing station to form a developed image on the imaging member. The primary imaging member bearing the developed image is passed through a charge erasing station to remove residual surface charge, then contacted with a receiver by the electrically biased roller transfer assembly, causing the developed image to transfer to the receiver. The silicon carbide layer protects the photoconductive element against damage by contaminant particles present in the apparatus.

Process for reducing image defects in an electrostatographic apparatus containing particulate contaminants

A fuser member having a layer which includes: an addition crosslinked polyorganosiloxane elastomer, and copper oxide particles dispersed therein in a concentration of from 5 to 40 percent of the total volume of the layer.

Fusing members having copper oxide-filled, addition-cured siloxane layers

A method and an apparatus for producing, in a single pass, an electrophotographic image comprising at least two colors. The photoconductive element is bipolar, and has a single active layer and a protective layer of diamond-like carbon.

Apparatus with bipolar photoconductive element for making multicolor

A photoconductive element comprising an electrically conductive support and at least one active layer, said active layer comprising N-(p-(di-p-tolylamino)phenyl)-N'-(1,2-dimethylpropyl)-1,4,5,8-naphthalenet etracarboxylic diimide and one or more perylene dyes of structure I: ##STR1## wherein R.sub.1 and R.sub.2 are, each independently, ##STR2## and R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11 and R.sub.12 are, each independently, H, CH.sub.3, or C.sub.2 -C.sub.4 alkyl, linear or branched.

Bipolar electrophotographic elements

A bipolar electrophotographic element comprising a) a single active bipolar photoconductive layer on an electrically conductive support and b) a diamond-like carbon protective layer, having a fluorine content between 0 and 65 atomic percent based on the composition of the entire protective layer, and also having a thickness between 0.05 and 0.5 .mu.m. Also disclosed is a coating composition for a single bipolar photoconductive layer comprising: i) one or more binder polymers; ii) at least one aggregating dye salt; iii) at least one organic charge transport agent; and iv) a volatile coating solvent.

Single layer bipolar electrophotographic element

An electrophotographic apparatus with improved blue sensitivity comprises: a) a charging means; b) an exposure means, which includes light of a wavelength between 350 and 500 nanometers, and c) a photoconductive element comprising an electrically conductive base, two or more charge generation layers, at least one charge transport layer, and a protective layer comprising plasma-polymerized fluorocarbon, wherein the fluorine content of the protective layer is equal to or greater than 2.2 and less than 65 atomic percent. A method of making an image is also disclosed.

Electrophotographic apparatus with improved blue sensitivity

A bipolar charge transport material that is useful in electrophotography, said bipolar charge transport material N,N'-bis-�p-(di-p-tolylamino)phenyl!-1,4,5,8-naphthalenetetracarboxylic acid having the structure: ##STR1##

Bipolar charge transport materials useful in electrophotography

There is provided an electrophotographic element and method of making the electrophotographic element comprising a conductive support, a charge generation layer and a charge transport layer, said electrophotographic element having thereon a protective layer of a fluorinated diamond-like carbon wherein the fluorine content of the outermost surface of the fluorinated diamond-like carbon layer is between about 25 and about 65 atomic percent based on the total composition of the outermost surface of the protective layer. The protective layer provides for a low surface energy coating having a long process lifetime without causing latent image spread or degradation of photosensitivity.

Photoconductive element having an outermost layer of a fluorinated

A photoconductive element comprising: an electrically conductive base; at least one active layer comprising an organic material, said at least one active layer being capable of charge generation and charge transport; and an outermost multilayer protective overcoat comprising at least one sol-gel layer and at least one outermost diamond-like carbon layer comprising fluorine.

Photoconductive elements having multilayer protective overcoats

A method of making a photoconductive element comprises the steps of: a) providing an electrically conductive base and depositing thereon, in any order, photoconductive layers comprising at least one charge transport layer and at least two charge generation layers; b) placing the layers formed in step a) in a reaction chamber with at least one feed gas selected from a hydrocarbon compound and a fluorocarbon compound in their gas phase; and c) decomposing the gas by plasma-enhanced chemical vapor deposition thereby forming on the photoconductive layers an outermost protective layer comprising diamond-like carbon having a fluorine content of between 0 and 65 atomic percent of the protective layer.

Method of making multilayer electrophotographic elements

A photoconductive element comprising an electrically conductive base; two or more charge generation layers; at least one charge transport layer; and a protective layer comprising diamond-like carbon, having fluorine between 0 and 65 atomic percent of the protective layer.

Multilayer photoconductive elements having low dark decay

A hydrophilic colloid is hardened with a vinyl-sulfone hardener in the presence of a borate compound in an amount sufficient to accelerate the rate of hardening. The borate compound is preferably a compound of Formula (I), or a salt, hydrate or precursor thereof:

Hardening a hydrophilic colloid composition

A fuser member having a core and a layer overlying the core. The layer includes: an addition crosslinked polyorganosiloxane elastomer, and chromium oxide particles dispersed therein in a concentration of from about 5 to about 50 percent of the total volume of the layer.

Fuser member having chromium oxide-filled, addition cured layer

There is described a fuser member having a layer comprising a condensation-cured poly(dimethyl siloxane) elastomer filled with a mixture of tin oxide and zinc oxide wherein

Condensation-cured PDMS filled with zinc oxide and tin oxide mixed

The present invention provides a fuser member having a substrate and an outermost layer of a fluorinated diamond like carbon wherein the fluorine content of the surface of said layer is between about 20 and 65 atomic percent based on the total amount of fluorine, carbon and oxygen in said surface. The fuser member is characterized in that the outermost layer provides for excellent release of the toner.

Growing community of inventors

Rochester, NY, United States of America

Susan A Visser