Patents by Inventor Donald C. Von Hoene
Donald C. Von Hoene 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: 20020079049Abstract: A seamless flexible electrostatographic imaging member belt fabrication method comprising providing a flexible substrate support sheet, producing first desired features on a first portion of the substrate support sheet, including removing material from the substrate support sheet with first emissions, producing second desired features on a second portion of the substrate support sheet complementary to the first desired features, including removing material from the substrate support sheet with second emissions, overlapping the first and second desired features, bonding the first desired pattern with the second desired pattern to produce a seamed belt and applying at least one coating the substrate support sheet.Type: ApplicationFiled: December 14, 2001Publication date: June 27, 2002Applicant: Xerox CorporationInventors: Robert C.U. Yu, Anthony M. Horgan, Satchidanand Mishra, Donald C. Von Hoene, Bing R. Hsieh, Edward F. Grabowski, Richard L. Post, Kathleen M. Carmichael
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Publication number: 20020074082Abstract: A seamless flexible electrostatographic imaging member belt fabrication method comprising providing a flexible substrate support sheet, such as with a rectangular shape, placing a template on the support sheet, producing first desired features on a first portion of the substrate support sheet, including removing material from the substrate support sheet with first emissions, producing second desired features on a second portion of the substrate support sheet complementary to the first desired features, including removing material from the substrate support sheet with second emissions, overlapping the first and second desired features, bonding the first desired pattern with the second desired pattern to produce a seamed substrate support belt having substantially no added seam thickness and applying at least one coating over the substrate support belt.Type: ApplicationFiled: December 14, 2001Publication date: June 20, 2002Applicant: Xerox CorporationInventors: Robert C.U. Yu, Anthony M. Horgan, Satchidanand Mishra, Donald C. Von Hoene, Bing R. Hsieh, Edward F. Grabowski, Richard L. Post, Kathleen M. Carmichael
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Publication number: 20020074520Abstract: A pattern fabrication apparatus includes a beam path for a beam to selectively bombard a target, a beam source producing the beam, a beam spreader that spreads the beam, a mask inducing a pattern on the beam, and a lens that can focus the beam onto the target. The apparatus can be used to manufacture seamless flexible electrostatographic imaging members by providing a flexible substrate support sheet, such as having a rectangular shape, producing first desired features on the support sheet, including removing material from the support sheet with first emissions, producing second desired features on the support sheet complementary to the first desired features, including removing material with second emissions, overlapping the first and second desired features, bonding the features to produce a seamed belt having substantially no added seam thickness, and applying at least one coating over the seamed belt.Type: ApplicationFiled: December 14, 2001Publication date: June 20, 2002Applicant: Xerox CorporationInventors: Robert C.U. Yu, Anthony M. Horgan, Satchidanand Mishra, Donald C. Von Hoene, Bing R. Hsieh, Edward F. Grabowski, Richard L. Post, Kathleen M. Carmichael
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Patent number: 6372396Abstract: A process including providing at least a flexible substrate layer having a first major surface on one side and a second major surface on a second side opposite the first major surface, the first major surface being an exposed surface, applying a coating of an anticurl backing layer dispersion on the first major surface of the substrate layer, the dispersion comprising a volatile carrier liquid, a film forming polymer dissolved in the volatile carrier liquid, solid organic particles dispersed in the volatile carrier liquid, and an organic additive dissolved in the volatile carrier liquid, the organic additive represented by the structural formula: wherein m is a number from 1 to 99, n is a number from 1 to 99, p is an integer between 1 and 10, f is an integer between 1 and 8, and I is an integer between 10 and 500, and drying the coating to remove the volatile carrier and form a dried anticurl backing layer.Type: GrantFiled: October 20, 2000Date of Patent: April 16, 2002Assignee: Xerox CorporationInventors: Robert C. U. Yu, Satchidanand Mishra, Kathleen M. Carmichael, Richard L. Post, Bing R. Hsieh, Anthony M. Horgan, Edward F. Grabowski, Donald C. Von Hoene, Huoy-Jen Yuh, Michael S. Roetker
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Patent number: 5714290Abstract: A flexible belt comprising a flexible support layer, at least one coating comprising a film forming polymer, and a seam having a bent shape extending from one edge of the belt to the opposite edge of the belt. The flexible electrostatographic imaging belt may be fabricated by providing a sheet having two parallel sides and two opposite ends having matching bent profiles, the sheet having a first major exterior surface opposite and parallel to a second major exterior surface, overlapping an edge of the first major exterior surface adjacent one of the ends onto an edge of the second major exterior surface adjacent the other one of the ends to form a overlapped joint in which the bent profiles of the opposite ends match, and permanently securing the ends to each other to form a seam having a bent shape. This seamed flexible electrostatographic imaging belt may be used in an electrostatographic imaging process.Type: GrantFiled: December 1, 1994Date of Patent: February 3, 1998Assignee: Xerox CorporationInventors: Robert C. U. Yu, Donald C. Von Hoene
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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: 5518854Abstract: A method of fabricating a cylindrical device comprising having at least one distinct outer layer comprising providing a preformed rigid cylindrical support drum having a predetermined outer circumference, a first end and a second end, providing a flexible belt having an inner circumference at least about 0.05 percent smaller than the outer circumference of the support drum, circumferentially expanding the belt with a flowing fluid under pressure until the circumference of the inner surface of the belt adjacent the first end is stretched to a new dimension at least about 0.Type: GrantFiled: January 18, 1995Date of Patent: May 21, 1996Assignee: Xerox CorporationInventors: Robert C. U. Yu, William G. Herbert, William W. Limburg, Satchidanand Mishra, Richard L. Post, Donald C. Von Hoene, Geoffrey M. T. Foley, Abraham Cherian
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Patent number: 5469242Abstract: A corona generating device of the type having a conductive shield partially surrounding a corona discharge electrode is provided with heating element. The heating element raises the surface temperature of the conductive shield to reduce or eliminate the adsorption of corona effluents and thereby minimize or prevent copy quality defects.Type: GrantFiled: February 14, 1995Date of Patent: November 21, 1995Assignee: Xerox CorporationInventors: Robert C. U. Yu, Geoffrey M. T. Foley, William G. Herbert, William W. Limburg, Satchidanand Mishra, Richard L. Post, Donald C. Von Hoene
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Patent number: 5415961Abstract: A method of fabricating a cylindrical device comprising having at least one distinct outer layer comprising providing a preformed rigid cylindrical support drum having a predetermined outer circumference, a first end and a second end, providing a flexible belt having an inner circumference at least about 0.05 percent smaller than the outer circumference of the support drum, circumferentially expanding the belt with a flowing fluid under pressure until the circumference of the inner surface of the belt adjacent the first end is stretched to a new dimension at least about 0.Type: GrantFiled: September 29, 1992Date of Patent: May 16, 1995Assignee: Xerox CorporationInventors: Robert C. U. Yu, William G. Herbert, William W. Limburg, Satchidanand Mishra, Richard L. Post, Donald C. Von Hoene, Geoffrey M. T. Foley, Abraham Cherian
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Patent number: 4467023Abstract: An improved layered photoresponsive imaging device consisting of(1) a supporting substrate,(2) a photogenerating layer comprised of a charge carrier photogenerating pigment dispersed in a resinous binder,(3) a hole carrier transport layer, comprised of molecules of the formula ##STR1## dispersed in a highly insulating and transparent organic resinous material, wherein an X is selected from the group consisting of (ortho) CH.sub.3, (meta) CH.sub.3, (para) CH.sub.3, (ortho) Cl, (meta) Cl, (para) Cl, and a hole injecting electrode strip comprised of carbon black particles and graphite particles dispersed in a resinous binder, which strip is attached to and extends the length of the non-image areas of the hole carrier transport layer.Type: GrantFiled: August 15, 1983Date of Patent: August 21, 1984Assignee: Xerox CorporationInventors: Joseph Y. C. Chu, Donald C. Von Hoene
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Patent number: 4123269Abstract: Disclosed is a layered photosensitive device for use in electrostatographic copying. The device comprises:(a) an electrically conductive substrate;(b) a layer of material capable of injecting holes into a layer on its surface;(c) a hole transport layer in operative contact with the layer of hole injecting material which transport layer comprises a combination of a highly insulating organic resin having dispersed therein small molecules of an electrically active material, the combination of which is substantially non-absorbing to visible light but allows injection of photogenerated holes fom a charge generator layer in contact with said hole transport layer and electrically induced holes from the layer of injecting material;(d) a layer of a charge generating photoconductive material on and in operative contact with the charge transport layer; and(e) a layer of an insulating organic resin overlaying the layer of charge generating material.Type: GrantFiled: September 29, 1977Date of Patent: October 31, 1978Assignee: Xerox CorporationInventors: Donald C. Von Hoene, Joseph Y. C. Chu, Inan Chen, Robert N. Jones
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Patent number: 4063943Abstract: Disclosed is a method of forming a latent electrostatic image on a segment of an electrostatographic photosensitive device which comprises a grounded conductive substrate having a layer of photoconductive material on its surface which is in turn overcoated with an insulating organic resin. The method comprises:A. applying an initial electrostatic charge of one polarity to the surface of the photosensitive device,B. advancing the segment of the photosensitive device toward a corona emitting grid which is wider than the segment selected,C. activating the grid when the trailing edge of the segment reaches the lead edge of the grid to thereby apply an electronic field of either alternating current or direct current of polarity opposite that of the polarity of the initial charge,D. exposing the segment to imagewise activating radiation in the full frame flash exposure mode while continuing to apply the electronic field thereto;E.Type: GrantFiled: August 23, 1976Date of Patent: December 20, 1977Assignee: Xerox CorporationInventors: Donald C. Von Hoene, John M. Magde
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Patent number: 4063945Abstract: Disclosed is a method for forming a latent electrostatic image on a photosensitive device comprising a grounded conductive substrate having on its surface a layer of photoconductive material which is in turn overcoated with a layer of insulating organic resin. The method involves applying an initial electrostatic charge of one polarity to the surface of the photosensitive device followed by the steps of:1. applying to the surface of the photosensitive device an electronic field of direct current having a polarity opposite to that of the initial electrostatic charge, and, either simultaneously or sequentially, exposing the device to imagewise activating radiation;2. uniformly exposing the device to activating radiation; and3. applying an electrostatic charge of the same polarity as that of the initial charge to the surface of the photosensitive device to thereby simultaneously erase the electrostatic charge from the device and initially charge it as the first step in the next cycle.Type: GrantFiled: February 17, 1977Date of Patent: December 20, 1977Assignee: Xerox CorporationInventors: Donald C. Von Hoene, Richard L. Post