Patents by Inventor Yonn K. Rasmussen
Yonn K. Rasmussen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20070298341Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, and wherein the photogenerating layer contains a titanyl phthalocyanine prepared, for example, by dissolving a Type I titanyl phthalocyanine in a solution comprising a trihaloacetic acid and an alkylene halide; adding the mixture comprising the dissolved Type I titanyl phthalocyanine to a solution comprising an alcohol and an alkylene halide thereby precipitating a Type Y titanyl phthalocyanine; and treating the Type Y titanyl phthalocyanine with a monohalobenzene.Type: ApplicationFiled: June 22, 2006Publication date: December 27, 2007Inventors: Jin Wu, Satchidanand Mishra, Kathleen M. Carmichael, Anthony M. Horgan, Kent J. Evans, Geoffrey M.T. Foley, Yonn K. Rasmussen, Edward F. Grabowski, Liang-Bih Lin
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Patent number: 7312007Abstract: A photoconductive member containing a hole blocking layer, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer contains a metallic component like a titanium oxide and a polymeric binder.Type: GrantFiled: September 16, 2004Date of Patent: December 25, 2007Assignee: Xerox CorporationInventors: Liang-Bih Lin, Jin Wu, Geoffrey M T. Foley, Yonn K. Rasmussen
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Publication number: 20070292782Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one polyphenyl ether of the formula wherein each R1, R2, and R3 is independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and n is from about 1 to about 10, and a thiophosphate.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin, Markus R. Silvestri
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Publication number: 20070292785Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one polyphenyl thioether of the formula wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, aryl, alkoxy, and halogen; n is a number of from about 1 to about 10; and a thiophosphate.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M. T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin, Markus R. Silvestri
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Publication number: 20070292789Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one polyphenyl ether of the formula wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and n is a suitable number of from about 1 to about 10.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M.T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin
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Publication number: 20070292788Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer and at least one charge transport layer of at least one charge transport component, at least one C-ether of the formula wherein R1, R2, R3 and R4 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and the sum of n plus m (n+m) is from about 1 to about 10, and an optional antioxidant; and wherein a thiophosphate is contained in the photogenerating layer.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M. T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin, Markus R. Silvestri
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Publication number: 20070292783Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one C-ether of the formula wherein R1, R2, R3 and R4 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and the sum of n plus m (n+m) is from about 1 to about 10, and a thiophosphate.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M. T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin, Markus R. Silvestri
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Publication number: 20070292791Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer and at least one charge transport layer of at least one charge transport component, at least one polyphenyl thioether of the formula wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen mixtures thereof, and n is a number of, for example, from about 1 to about 10.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M. T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin
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Publication number: 20070292787Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, at least one C-ether of the formula wherein R1, R2, R3 and R4 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and the sum of n plus m (n+m) is from about 1 to about 10.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin
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Publication number: 20070292790Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one polyphenyl thioether of the formula wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and n is a number of from about 1 to about 10; and wherein a thiophosphate is contained in the photogenerating layer.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M.T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin, Markus R. Silvestri
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Publication number: 20070292792Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one polyphenyl ether of the formula wherein R1, R2, R3 and R4 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and n is a number of from about 1 to about 10; and wherein a thiophosphate is contained in the photogenerating layer.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M. T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin, Markus R. Silvestri
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Patent number: 5919590Abstract: An electrostatographic imaging member comprisinga supporting substrate having an electrically conductive layer,at least one imaging layer,an anti-curl layer,an optional ground strip layer andan optional overcoating layer,the anti-curl layer includinga film forming polycarbonate binder,an optional adhesion promoter,a siloxane represented by the formula: ##STR1## wherein x and y are independently selected integers between about 5 and about 500,n is a number between 0 and 10, ##STR2## wherein z is number between about 1 and about 30,R.sub.2 and R.sub.3 are independently selected from alkylene groupscontaining from 1 to 10 carbon atoms,R.sub.4 is a hydrogen atom or an alkyl group containing 1 to 3 carbon atoms, andoptional dispersed particles selected from the group consisting of inorganic particles, organic particles, and mixtures thereof.Type: GrantFiled: November 20, 1998Date of Patent: July 6, 1999Assignee: Xerox CorporationInventors: Robert C. U. Yu, Geoffrey M. T. Foley, Satchidanand Mishra, Richard L. Post, Yonn K. Rasmussen, John F. Yanus
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Patent number: 5895529Abstract: There is disclosed a chuck apparatus for holding and shaping a hollow, flexible, endless substrate during dip coating comprising: (a) a hollow, flexible bladder adapted to be disposed within the substrate; and (b) a first spindle and a second spindle which are partially disposed within the bladder, the second spindle being movable to press the bladder against the substrate and to shape the bladder and the substrate into an elongated shape.Type: GrantFiled: June 19, 1997Date of Patent: April 20, 1999Assignee: Xerox CorporationInventors: Geoffrey M. T. Foley, Robert W. Hedrick, Henry T. Mastalski, Ernest F. Matyi, Yonn K. Rasmussen, Mark S. Thomas, Huoy-Jen Yuh, William G. Herbert, Gary J. Maier
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Patent number: 5876887Abstract: An electrophotographic imaging member has a support, and at least one photoconductive layer having from about 90% by weight to about 10% by weight of the photoconductive particles of a photosensitive substituted perylene pigment, and, correspondingly, from about 10% by weight to about 90% by weight of at least one other n-type photosensitive pigment that is sensitive to shorter wavelength light than is the perylene pigment.Type: GrantFiled: February 26, 1997Date of Patent: March 2, 1999Assignee: Xerox CorporationInventors: John S. Chambers, Huoy-Jen Yuh, James M. Markovics, Yonn K. Rasmussen
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Patent number: 5635324Abstract: A photoreceptor and method eliminate interference-fringe print defect due to interference effects caused by reflected beams from various interfaces in a multilayered photoreceptor. The substrate surface is formed with specific dimensions so as to enable the coating of the substrate with an undercoat film including, for example, an organometallic compound or an organometallic chelate compound such as any suitable hydrolyzable organozirconium, organotitanium or organoaluminum compound with a silane. Elimination of the "pepper spot" print defect is accomplished without the addition of a thickening agent to the undercoat film.Type: GrantFiled: March 20, 1995Date of Patent: June 3, 1997Assignee: Xerox CorporationInventors: Yonn K. Rasmussen, Geoffrey M. T. Foley, Richard L. Post, Robert C. U. Yu, Satchidanand Mishra, John F. Yanus
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Patent number: 5606396Abstract: An electrostatographic imaging process is disclosed which includes providing a flexible electrostatographic, particularly electrophotographic, imaging belt including a substrate layer, a charge generating layer, charge transport layer, and two parallel longitudinal edges, the imaging belt having a charge transport layer tension strain of less than about 0.05 percent across the width of the belt, mounting the imaging belt on a plurality of spaced apart support rollers, transporting the belt around the support rollers, repeatedly applying a cross belt compression strain distributed in an arcuate gradient of increasing intensity from the longitudinal centerline of the belt to each of the edges of the belt, the strain applied at each of the edges of the belt repeatedly peaking to an intensity at the longitudinal edges of at least about 0.Type: GrantFiled: January 6, 1995Date of Patent: February 25, 1997Assignee: Xerox CorporationInventors: Robert C. U. Yu, Geoffrey M. T. Foley, Richard L. Post, William W. Limburg, Youti Kuo, Donald C. Von Hoene, Satchidanand Mishra, David H. Pan, Yonn K. Rasmussen, Dale S. Renfer, John F. Yanus, Richard L. Schank
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Patent number: 5599646Abstract: There is disclosed a dip coating method comprising: (a) shaping the widths of a plurality of hollow, flexible, endless substrates into an elongated shape and arranging the plurality of the elongated substrates into a configuration for dipping into a coating solution of a single coating vessel prior to (c); (b) dipping the plurality of the substrates having the elongated shape into a coating solution disposed in the coating vessel; and (c) raising the plurality of the substrates having the elongated shape from the coating solution, thereby resulting in coated substrates.Type: GrantFiled: March 29, 1996Date of Patent: February 4, 1997Assignee: Xerox CorporationInventors: Geoffrey M. T. Foley, William G. Herbert, Eugene A. Swain, Yonn K. Rasmussen, Gary J. Maier
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Patent number: 5573445Abstract: A process for producing an electrophotographic photoreceptor having a roughened substrate surface by wet honing the substrate surface with a composition including deionized water and substantially spherical glass beads. The process produces a photoreceptor substrate that eliminates interference fringe effects caused by reflection of coherent light without creating other printing defects such as white or black spots. A wet honing composition for producing such photoreceptors is also provided.Type: GrantFiled: August 31, 1994Date of Patent: November 12, 1996Assignee: Xerox CorporationInventors: Yonn K. Rasmussen, Larry Sciarratta, Ronald T. Kosmider
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Patent number: 5372904Abstract: An electrophotographic imaging member comprising a substrate having an electrically conductive metal oxide surface, a hole blocking layer and at least one electrophotographic imaging layer, the hole blocking layer comprising a reaction product of(a) a material selected from the group consisting of a hydrolyzed organozirconium compound, a hydrolyzed organotitanium compound and mixtures thereof,(b) a hydroxyalkylcellulose,(c) a hydrolyzed organoaminosilane, and(d) the metal oxide surface.Type: GrantFiled: January 3, 1994Date of Patent: December 13, 1994Assignee: Xerox CorporationInventors: Robert C. U. Yu, Geoffrey M. T. Foley, Satchidanand Mishra, Richard L. Post, Yonn K. Rasmussen, John F. Yanus, Neil S. Patterson