Anticurl Layer Patents (Class 430/930)
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Patent number: 8257890Abstract: A photoconductor that includes a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, and wherein the first layer is in contact with the supporting substrate on the reverse side thereof, and which first layer is comprised of a crosslinked mixture of a glycoluril resin and a self crosslinking acrylic resin.Type: GrantFiled: August 31, 2009Date of Patent: September 4, 2012Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8163449Abstract: The presently disclosed embodiments relate generally to the formulation of an anticurl back coating layer that renders imaging apparatus flexible members and components their desirable flatness, for use in electrostatographic, including digital apparatuses. More particularly, the embodiments pertain to an imaging member comprising an anticurl back coating layer formulated to comprise a polymer blend of an anti-static polymer and a low surface energy A-B diblock copolymer polymer and an adhesion promoter. The embodiments provide an imaging member belt with the anticurl back coating that is electrically conductive and also substantially reduces its surface contact friction to help suppress/eliminate tribo-electrical charge build-up at the backside of the imaging member belt under normal machine imaging member belt operational conditions in the field.Type: GrantFiled: August 5, 2010Date of Patent: April 24, 2012Assignee: Xerox CorporationInventors: Robert C. U. Yu, Edward F. Grabowski, Yuhua Tong
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Patent number: 8110327Abstract: A photoconductor that includes a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, and wherein the first layer is in contact with the supporting substrate on the reverse side thereof, and which first layer includes a fluorinated nano diamond component.Type: GrantFiled: June 29, 2009Date of Patent: February 7, 2012Assignee: Xerox CorporationInventors: Jin Wu, Edward F. Grabowski, Lanhui Zhang, Lin Ma
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Patent number: 8057973Abstract: A photoconductor that includes a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, and wherein the first layer is in contact with the supporting substrate on the reverse side thereof, and which first layer is comprised of a nano diamond component.Type: GrantFiled: January 27, 2009Date of Patent: November 15, 2011Assignee: Xerox CorporationInventors: Jin Wu, Edward F Grabowski, Lin Ma, Lanhui Zhang
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Patent number: 8026028Abstract: Present embodiments pertain to an improved electrostatographic imaging member having low contact friction surfaces to ease sliding mechanical interaction and suppressing abrasion/wear failure and methods of preparing thereof. The improved imaging member has layers comprising slippery polyhedral oligomeric silsequioxane molecules that enhance the physical and mechanical functions and reduce the layers surface contact friction of the imaging member to extend service life.Type: GrantFiled: April 7, 2008Date of Patent: September 27, 2011Assignee: Xerox CorporationInventor: Robert C. U. Yu
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Patent number: 8021812Abstract: Present embodiments pertain to an improved electrostatographic imaging member having low contact friction surfaces to ease sliding mechanical interaction and suppressing abrasion/wear failure and methods of preparing thereof. The improved imaging member has layers comprising slippery polyhedral oligomeric silsequioxane molecules that enhance the physical and mechanical functions and reduce the layers surface contact friction of the imaging member to extend service life.Type: GrantFiled: April 7, 2008Date of Patent: September 20, 2011Assignee: Xerox CorporationInventor: Robert C. U. Yu
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Patent number: 8012656Abstract: A photoconductor that includes, for example, a backing layer, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein the outermost layer of the backing layer is comprised of an acrylic resin and a crosslinkable fluoro additive.Type: GrantFiled: May 30, 2008Date of Patent: September 6, 2011Assignee: Xerox CorporationInventors: Jin Wu, Lanhui Zhang, Lin Ma
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Patent number: 7851111Abstract: An imaging belt comprises a substrate layer, an outer image layer and an inner anti-curl backing layer. The inner anti-curl backing layer, in turn, includes one or more carbon nanotubes disposed therein, together with an exposed backing layer surface. An image forming device includes the imaging belt. The image forming device is arranged to conductively couple the backing layer surface to an included ground source by means of one or more included conducting backer bars, one or more included grounding brushes, or any combination of included conducting backer bars and grounding brushes.Type: GrantFiled: July 31, 2006Date of Patent: December 14, 2010Assignee: Xerox CorporationInventors: Dan A. Hays, Edward F. Grabowski, Samir Kumar
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Patent number: 7829252Abstract: An imaging member having an enhanced anti-curl back coating is disclosed. The anti-curl back coating comprises a liquid oligomer. Additionally, a slip agent can also be included. The resulting anti-curl back coating contains little to no residual solvent, shows improved resistance to wear and ozonolysis, and increased lubricity to prevent static charge built-up.Type: GrantFiled: September 7, 2005Date of Patent: November 9, 2010Assignee: Xerox CorporationInventor: Robert C. U. Yu
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Patent number: 7781133Abstract: A photoconductor that includes, for example, a backing layer, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein the outermost layer of said backing layer is comprised of a self crosslinked acrylic resin and a crosslinkable siloxane component.Type: GrantFiled: February 19, 2008Date of Patent: August 24, 2010Assignee: Xerox CorporationInventors: Jin Wu, Lanhui Zhang, Lin Ma, Dale S Renfer
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Patent number: 7771908Abstract: A photoconductor that includes a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and where the first layer is in contact with the supporting substrate on the reverse side thereof, and which first layer is comprised of a fluorinated poly(oxetane) polymer.Type: GrantFiled: February 19, 2008Date of Patent: August 10, 2010Assignee: Xerox CorporationInventors: Jin Wu, Lanhui Zhang, Lin Ma
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Patent number: 7763405Abstract: A photoconductor containing a fluoroalkyl ester layer, a supporting substrate, a photogenerating layer, and at least one charge transport layer.Type: GrantFiled: March 23, 2007Date of Patent: July 27, 2010Assignee: Xerox CorporationInventors: Jin Wu, Ryan J. Ehmann, Lanhui Zhang, Lin Ma, Liang-Bih Lin, Daniel V. Levy
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Patent number: 7585602Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of silanols in the anticurl back coating to reduce or eliminate static charge buildup in the imaging member and to improve image quality.Type: GrantFiled: July 24, 2006Date of Patent: September 8, 2009Assignee: Xerox CorporationInventors: Jin Wu, Kathleen M. Carmichael, Edward F. Grabowski, Liang-bih Lin
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Patent number: 7572562Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of metallic compounds in the anticurl back coating to reduce or eliminate static charge buildup in the imaging member and to improve image quality.Type: GrantFiled: July 24, 2006Date of Patent: August 11, 2009Assignee: Xerox CorporationInventors: Jin Wu, Kathleen M. Carmichael, Edward F. Grabowski, Liang-bih Lin
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Patent number: 7560210Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of thiophosphates in the anticurl back coating to reduce or eliminate static charge buildup in the imaging member and to improve image quality.Type: GrantFiled: July 24, 2006Date of Patent: July 14, 2009Assignee: Xerox CorporationInventors: Jin Wu, Geoffrey M. T. Foley, Satchidanand Mishra, Liang-bih Lin, Anthony M. Horgan, Kent J. Evans, Kathleen M. Carmichael, Edward F. Grabowski
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Patent number: 7553591Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of organic sulfonic acids in the anticurl back coating to reduce or eliminate static charge buildup in the imaging member and to improve image quality.Type: GrantFiled: July 24, 2006Date of Patent: June 30, 2009Assignee: Xerox CorporationInventors: Jin Wu, Kathleen M. Carmichael, Edward F. Grabowski, Liang-bih Lin
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Patent number: 7527906Abstract: The presently disclosed embodiments are directed to anticurl back coatings useful in electrostatography. More particularly, the embodiments pertain to an electrophotographic imaging member with an improved anticurl back coating formulated by a polymer blend comprising two low surface energy polymeric materials that prevents curling, renders surface lubricity, eliminates electrostatic charge buildup, reduces surface contact friction, and enhances abrasion/wear resistance, and a process for making and using the imaging member.Type: GrantFiled: June 20, 2006Date of Patent: May 5, 2009Assignee: Xerox CorporationInventors: Robert C. U. Yu, Stephen T. Avery, Edward F. Grabowski, Satish Parikh, Donald J. Goodman
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Patent number: 7166399Abstract: An electrostatographic imaging member having a charge-retentive surface and a substrate, an imaging layer to receive an electrostatic latent image thereon, wherein the imaging layer is positioned on one side of the substrate, and an anti-curl backing layer positioned on the substrate on a side opposite to that of the imaging layer, wherein the anti-curl backing layer has a polymer binder and lignin sulfonic acid doped polyaniline, and an image forming apparatus having the above imaging member or photoreceptor to receive an electrostatic latent image on a charge-retentive surface of the photoreceptor or imaging member; a development component to apply toner to the charge-retentive surface to develop the electrostatic latent image to form a developed image on the charge-retentive surface; a transfer member to transfer the developed image from the charge-retentive surface to a copy substrate; and a fixing component to fuse the developed image to the copy substrate.Type: GrantFiled: April 14, 2004Date of Patent: January 23, 2007Assignee: Xerox CorporationInventors: Kathleen M. Carmichael, Robert C. U. Yu, Richard L. Post, Anthony M. Horgan, Satchidanand Mishra, Edward F. Grabowski, Satish R. Parikh, Donald J. Goodman, David M. Skinner
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Patent number: 7074551Abstract: The present invention relates to an imaging element comprising at least one imaging layer and a support wherein the support comprises at least one layer comprising a splayant and a layered material, wherein the layered material has an aspect ratio from 20:1 and 500:1 and wherein the layered material comprises less than 10% by weight of the layer. The present invention also relates to a method of making a dimensionally stable imaging element comprising providing a support wherein said support comprises at least one layer comprising a splayant and a layered material, wherein said layered material comprises an aspect ratio of from 20:1 to 500:1 and wherein said layered material comprises less than 10% by weight of said at least one layer; and applying at least one imaging layer.Type: GrantFiled: August 4, 2003Date of Patent: July 11, 2006Assignee: Eastman Kodak CompanyInventors: YuanQiao Rao, Robert J. Kress
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Patent number: 6645690Abstract: The invention relates to a photographic element comprising a base and hydrophillic colloid layers comprising at least one layer comprising photosensitive silver halide, wherein said hydrophilic colloid imaging layers further comprise a flexibilizer agent and said flexibilizer agent has a logP of greater than −1.2.Type: GrantFiled: December 21, 2001Date of Patent: November 11, 2003Assignee: Eastman Kodak CompanyInventors: Mridula Nair, Robert P. Bourdelais, Jehuda Greener
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Publication number: 20030162122Abstract: The invention relates to a photographic element comprising a base and hydrophillic colloid layers comprising at least one layer comprising photosensitive silver halide, wherein said hydrophilic colloid imaging layers further comprise a flexibilizer agent and said flexibilizer agent has a logP of greater than −1.2.Type: ApplicationFiled: December 21, 2001Publication date: August 28, 2003Applicant: Eastman Kodak CompanyInventors: Mridula Nair, Robert P. Bourdelais, Jehuda Greener
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Patent number: 6573036Abstract: A single-side coated light-sensitive silver halide photographic film material has been disclosed, having on one side of a subbed support, one or more light-sensitive silver halide emulsion layer(s) overcoated with an outermost protective layer; and, at the other side of said support, a backing layer, covered with a protective outermost layer, characterized in that at least said backing layer is provided with a layer wherein, besides a cross-linked or cross-linkable first binder an organic component free from cross-linking upon reaction with a hardener is present as a second binder having a low molecular weight.Type: GrantFiled: April 10, 2001Date of Patent: June 3, 2003Assignee: Afga-GevaertInventors: Mark Van den Zegel, Francis Vanhoudt, Frank Ruttens, Guy Damen
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Patent number: 6514646Abstract: The invention relates to an image element comprising at least one image layer, a base, a gelatin layer below said base and a pressure sensitive adhesive below said gelatin layer, wherein said base has a stiffness of less than 20 mN.Type: GrantFiled: December 21, 2001Date of Patent: February 4, 2003Assignee: Eastman Kodak CompanyInventors: Mridula Nair, Tamara K. Jones, Robert P. Bourdelais, Jehuda Greener, Justin Z. Gao
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Patent number: 6485896Abstract: A photographic film comprising a base layer and at least one emulsion layer, the emulsion layer having a melting temperature that is within 4 degrees centigrade of the incubation temperature used in an accelerated core-set test.Type: GrantFiled: December 6, 2000Date of Patent: November 26, 2002Assignee: Eastman Kodak CompanyInventors: Jehuda Greener, Yongcai Wang, Gary W. Visconte
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Publication number: 20020098452Abstract: A photographic film comprising a base layer and at least one emulsion layer, the emulsion layer having a melting temperature that is within 4 degrees centigrade of the incubation temperature used in an accelerated core-set test.Type: ApplicationFiled: December 6, 2000Publication date: July 25, 2002Inventors: Jehuda Greener, Yongcai Wang, Gary W. Visconte
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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: 6329113Abstract: The invention relates to an imaging member comprising a base wherein said base comprises at least one layer of heat shrinkable sheet and at least one strength layer.Type: GrantFiled: June 5, 2000Date of Patent: December 11, 2001Assignee: Eastman Kodak CompanyInventors: Robert P. Bourdelais, Peter T. Aylward, Alphonse D. Camp, Geoffrey Mruk
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Patent number: 6296983Abstract: This invention relates to a photographic element comprising a base paper, and biaxially oriented sheets on each side of said base paper wherein said biaxially oriented sheets and said base paper have the strongest direction of each web within 3 degrees of the machine direction or cross direction, and wherein each web has a machine direction to cross machine direction stiffness ratio of greater than 1.5 or less than 0.7.Type: GrantFiled: November 20, 1998Date of Patent: October 2, 2001Assignee: Eastman Kodak CompanyInventors: Thaddeus S. Gula, Peter T. Aylward, Robert P. Bourdelais
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Patent number: 6268117Abstract: This invention relates to a photographic member comprising at least one photosensitive layer and an integral base material comprising at least one polyester layer and an upper surface layer comprising a polyester or polyolefin polymer and a bluing tint wherein said integral base material has a spectral transmission of greater than 90%.Type: GrantFiled: December 21, 1998Date of Patent: July 31, 2001Assignee: Eastman Kodak CompanyInventors: Peter T. Aylward, Robert P. Bourdelais, Thomas M. Laney, Alphonse D. Camp
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Patent number: 6261730Abstract: A flexible electrostatographic imaging member including at least one photographic imaging layer, a support layer, and an anticurl back layer having an exposed surface including a cross linked phenoxy resin at the exposed surface, the phenoxy resin being formed from a solution including cross linkable solvent soluble phenoxy resin containing hydroxyl groups attached to carbon atoms, an acid having a pKa less than about 3, a cross linking agent selected from the group including a formaldehyde generating cross linking agent, an alkoxylated cross linking agent, a methylolamine cross linking agent and mixtures thereof, and a liquid selected from the group including solvents, diluent and mixtures thereof.Type: GrantFiled: November 29, 1999Date of Patent: July 17, 2001Assignee: Xerox CorporationInventors: John F. Yanus, Timothy J. Fuller, Damodar M. Pai, William W. Limburg, John A. Bergfjord, Sr., Dale S. Renfer
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Patent number: 6187518Abstract: The present invention is a photographic element which includes a support, at least one silver halide emulsion superposed on a front side of the support and an outermost backing layer superposed on a backside of the support. The outermost backing layer is composed of a hydrophobic binder and a hydrophilic binder wherein the backing layer has an advancing water contact angle of 70 or greater and a receding water contact angle of at least 40 less than the advancing water contact angle.Type: GrantFiled: October 23, 1998Date of Patent: February 13, 2001Assignee: Eastman Kodak CompanyInventors: Raymond T. Jones, Ravi Sharma, Alfred B. Fant
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Patent number: 6132951Abstract: Provided is a photographic support which is excellent in mechanical strength and is less liable to get into roll set curl and which is excellent in cutting property and flatness, and a photographic material using the same. The support for photographic material comprises a polyester film, wherein the polyester film comprises two kinds of polyester resins, each has intrinsic viscosity of 0.2-1.2, and a difference in the intrinsic viscosity between the polyester resins is 0.1-1.0.Type: GrantFiled: December 29, 1998Date of Patent: October 17, 2000Assignee: Konica CorporationInventors: Hidetoshi Ezure, Masahito Takada, Kenji Ohnuma, Yasuo Kurachi
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Patent number: 6071661Abstract: An imaging member including: (a) a substrate layer; (b) an imaging layer; and (c) an abrasion resistant layer selected from the group consisting of an overcoating layer and an anti-curl layer, wherein the abrasion resistant layer includes a branched polycarbonate.Type: GrantFiled: June 29, 1999Date of Patent: June 6, 2000Assignee: Xerox CorporationInventors: Bing R. Hsieh, Satchidanand Mishra, Anthony M. Horgan, Richard L. Post, Robert C. U. Yu, Donald C. VonHoene, Edward F. Grabowski, Kathleen M. Carmichael
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Patent number: 6071682Abstract: The present invention is photographic film base which includes a polymeric support having a first side and a second side and a glass transition temperature (Tg.sub.s). A polymeric layer is superposed on the first side of the polymeric support, the polymer layer having a glass transition temperature Tg.sub.L which is greater than the glass transition temperature of the support Tg.sub.s. The polymeric layer has a thickness of at least 2.5 percent of the thickness of the support.Type: GrantFiled: October 9, 1997Date of Patent: June 6, 2000Assignee: Eastman Kodak CompanyInventors: Jehuda Greener, Paul D. Yacobucci, Beverly A. Contestable, Catherine A. Falkner
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Patent number: 6043009Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, and a layer of microvoided biaxially oriented polyolefin sheet between said paper base and said silver halide layer.Type: GrantFiled: December 10, 1998Date of Patent: March 28, 2000Assignee: Eastman Kodak CompanyInventors: Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula, Peter T. Aylward
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Patent number: 6037108Abstract: A support for an imaging element is described, which support comprises a polyester polymeric film having coated thereon a subbing layer comprising gelatin and a multi-hydric organic compound having at least three hydroxyl groups, which gelatin subbing layer coated support has been subjected to a heat treatment to reduce the core-set curling tendency of the polymeric film. Imaging elements for use in an image-forming process is also described, which elements comprise a gelatin subbing layer coated polyester polymeric film support as described above, and an image-forming layer coated on the subbed support. A method for forming a heat-tempered, gelatin-subbed support for an imaging element is also described, comprising coating a subbing layer comprising gelatin and a multi-hydric organic compound having at least three hydroxyl groups on a polyester polymeric film, and subjected the coated film to heat treatment to reduce the core-set curling tendency of the polymeric film.Type: GrantFiled: April 27, 1998Date of Patent: March 14, 2000Assignee: Eastman Kodak CompanyInventors: Janglin Chen, Richard A. Castle, Yongcai Wang
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Patent number: 5985530Abstract: A silver halide photographic material is disclosed, comprising a support having on one side the support photographic component layers, wherein at least one of the component layers contains a composite polymeric material comprising inorganic particles and a hydrophobic polymer, a silver halide emulsion layer comprising a silver halide emulsion containing silver halide grains having an average chloride content of not less than 60 mol % and containing a metal dopant.Type: GrantFiled: July 25, 1997Date of Patent: November 16, 1999Assignee: Konica CorporationInventors: Wataru Ishikawa, Takehiro Kobayashi, Hirohide Ito
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Patent number: 5968722Abstract: The invention relates to a imaging element comprising a laminated base structure wherein said base structure comprises a paper having laminated to the upper side and upper biaxially oriented polyolefin sheet and laminated to the lower side of said paper a lower side biaxially oriented polymer sheet wherein said lower side biaxially oriented polymer sheet has an energy to break of less than 3.5.times.10.sup.7 J/m.sup.3 in at least one direction.Type: GrantFiled: June 19, 1998Date of Patent: October 19, 1999Assignee: Eastman Kodak CompanyInventors: Pang-Chia Lu, Robert P. Bourdelais, Thaddeus S. Gula
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Patent number: 5935748Abstract: An electrostatographic imaging member including an anti-curl layer, a supporting substrate having an electrically conductive layer, at least one imaging layer, an optional ground strip layer and an optional overcoating layer, the anti-curl layer including a film forming polymer binder selected from the group consisting ofa polymer represented by the following structural formula: ##STR1## wherein m is an integer between about 100 and about 800 and X is selected from the group consisting of a halogen atom, a linear substituted or unsubstituted alkyl group containing 1 to 6 carbon atoms, and a substituted or unsubstituted cyclohexyl ring, anda polymer represented by the following structural formula: ##STR2## wherein p is an integer between about 100 and about 800 and X is selected from the group consisting of a halogen atom, a linear substituted or unsubstituted alkyl group containing 1 to 6 carbon atoms, and a substituted or unsubstituted cyclohexyl ring, andblends of these polymers,a copolyester adhesion promoType: GrantFiled: July 23, 1998Date of Patent: August 10, 1999Assignee: Xerox CorporationInventors: Robert C. U. Yu, Richard L. Post
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Patent number: 5902720Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of biaxially oriented polymer sheet between said paper base and said silver halide layer, and a biaxially oriented polymer sheet on the opposite side of said base paper from said photosensitive silver halide layer wherein said biaxially oriented sheets and said base paper together have balanced forces such that the photographic element remains flat over a broad range of relative humidity changes.Type: GrantFiled: May 23, 1997Date of Patent: May 11, 1999Assignee: Eastman Kodak CompanyInventors: Douglas N. Haydock, Thaddeus S. Gula, Peter T. Aylward, Robert P. Bourdelais
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Patent number: 5891612Abstract: A photographic element is disclosed comprising a film support, at least one light-sensitive layer, a highly loaded layer which contains more than 30 volume percent of non-film forming particulate material, and upper and lower aqueous coated adjacent layers which are next to the highly loaded layer, the upper adjacent layer being further from the support and the lower adjacent layer being closer to the support relative to the highly loaded layer, each adjacent layer having a film forming binder content of greater than 70 volume percent, and the lower adjacent layer being at least 1.0 micron thick.Type: GrantFiled: August 28, 1997Date of Patent: April 6, 1999Assignee: Eastman Kodak CompanyInventors: Mridula Nair, Lloyd A. Lobo, George L. Oltean, Tamara K. Osburn
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Patent number: 5888683Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, a biaxially oriented polymer sheet between said paper base and said silver halide layer, wherein said polymer sheet has a thickness of between 13 microns and 65 microns and a Young's modulus of between 700 and 5200 MPa wherein said base paper has a Young's modulus between 1380 MPa and 13800 MPa, a thickness between 75 microns and 200 microns, and an average roughness on the emulsion side of between 0.18 and 0.68 microns and wherein the ratio of thickness between said polymer sheet and said base paper is between 0.1 and 0.5.Type: GrantFiled: May 23, 1997Date of Patent: March 30, 1999Assignee: Eastman Kodak CompanyInventors: Thaddeus S. Gula, Peter T. Aylward, Robert P. Bourdelais, Douglas N. Haydock
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Patent number: 5888681Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of microvoided polymer sheet between said paper base and said silver halide layer, wherein said microvoided polymer sheet comprises a series of microvoids separated by polymer matrix in the vertical direction such that said microvoided polymer sheet when reflecting light has an opalescent appearance.Type: GrantFiled: May 23, 1997Date of Patent: March 30, 1999Assignee: Eastman Kodak CompanyInventors: Thaddeus S. Gula, Peter T. Aylward, Robert P. Bourdelais, Douglas N. Haydock
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Patent number: 5876911Abstract: This invention provides a means for improving rapid drying ability upon development and preservability of developing solution which comprises interposing a layer of water-soluble polymer having an average molecular weight of 300,000 or more between a non-photosensitive hydrophilic colloid layer and a hydrophobic polymer layer coated on the opposite side of a support to a silver halide photographic emulsion layer, or storing dried the above silver halide photographic photosensitive material with the interposed layer at the glass transition temperature of the hydrophobic polymer or higher.Type: GrantFiled: May 27, 1997Date of Patent: March 2, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kenji Nakajima, Shouji Nishida
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Patent number: 5874205Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, and a layer of biaxially oriented polymer sheet adhered to the back side of the said paper base opposite to the side where said at least one said silver halide photosensitive layer is located, wherein said polymer sheet is provided with indicia on the surface of said sheet between said base paper and said polymer sheet.Type: GrantFiled: May 23, 1997Date of Patent: February 23, 1999Assignee: Eastman Kodak CompanyInventors: Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula, Peter T. Aylward
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Patent number: 5866282Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, and a layer of microvoided biaxially oriented polyolefin sheet between said paper base and said silver halide layer.Type: GrantFiled: May 23, 1997Date of Patent: February 2, 1999Assignee: Eastman Kodak CompanyInventors: Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula, Peter T. Aylward
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Patent number: 5853965Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, and a layer of biaxially oriented polyolefin sheet between the top of said paper base and said at least one silver halide layer wherein said biaxially oriented polyolefin sheet comprises a top layer of polyethylene polymer that bonds to gelatin.Type: GrantFiled: May 23, 1997Date of Patent: December 29, 1998Assignee: Eastman Kodak CompanyInventors: Douglas N. Haydock, Thaddeus S. Gula, Peter T. Aylward, Robert P. Bourdelais
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Patent number: 5824462Abstract: Disclosed are resin-coated paper having on one side of its base paper a first resin layer made of a resin composition obtained by melt-blending 90 to 65 parts by weight of a high-density polyethylene resin having a melt flow rate of 10.0 g/10 min to 40.0 g/10 min and a density of 0.960 g/cm.sup.3 or more and 10 to 35 parts by weight of a low-density polyethylene resin or a medium-density polyethylene resin, which has a melt flow rate of 0.2 g/10 min to 2 g/10 min, a density of 0.935 g/cm.sup.3 or less, a percentage of molecules with a molecular weight of 500,000 or more of 10% by weight or more and a critical shear rate of 0.5 (l/sec) or less, said resin composition obtained by the melt-blending having a critical shear rate of 10 (l/sec) or less; and a process for producing the resin-coated paper. The resin-coated paper is good in the molding processability of the resin layer, is excellent in the adhesion between the resin layer and the base paper, and contains only a small amount of a gel formed.Type: GrantFiled: September 13, 1996Date of Patent: October 20, 1998Assignees: Mitsubishi Paper Mills Limited, Mitsubishi Chemical CorporationInventors: Tetsuya Ashida, Touru Noda, Osamu Kojima, Tomoichi Morita, Nobushige Ikeya, Takuya Seri, Kohhei Nitta
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Patent number: 5753426Abstract: A photographic sheet element comprising a film support, at least one light-sensitive layer having a hydrophilic binder on a first side of the support, the thickness of the at least one light-sensitive layer and other layers on the first side of the support being T.sub.E, on the opposite side of the support, a transparent magnetic recording layer comprising ferromagnetic particles in a hydrophilic colloid, the thickness of the transparent magnetic recording layer being T.sub.M, intermediate, the transparent magnetic recording layer and the support, a hydrophilic colloid control layer, the thickness of the control layer being T.sub.C, the relative thickness of the layers being represented by the formula: ##EQU1## where 0<X<10.Type: GrantFiled: February 21, 1996Date of Patent: May 19, 1998Assignee: Eastman Kodak CompanyInventors: Mridula Nair, Robert Edward Dickerson, George Leslie Oltean, Lloyd Anthony Lobo
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Patent number: 5629141Abstract: There is disclosed a process for heat treatment of a photographic polyester film support, comprising steps of winding a biaxially oriented polyester film into a roll so that the thickness of a gas layer lying between the film layers continually becomes 1.5 .mu.m to 10 .mu.m, and then subjecting the roll of the polyester film to heat treatment at a temperature between 50.degree. C. and the glass transition temperature of the polyester. According to the above process, a photographic polyester film support, which is excellent in flatness of the film and does not cause unevenness of coating, can be provided.Type: GrantFiled: November 16, 1995Date of Patent: May 13, 1997Assignee: Fuji Photo Film Co., Ltd.Inventor: Fumio Kawamoto