Patents Assigned to Ferrania, S.p.A.
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Patent number: 6878512Abstract: The present invention relates to a new silver halide tabular grain emulsion, wherein said silver halide emulsion comprises tabular grains having average thickness lower than 0.15 ?m, an average diameter of at least 1.20 ?m and an average aspect ratio of at least 8:1, and showing a coefficient of diameter variation COVd within the range of from 31% to 44% and a coefficient of thickness variation COVt lower than 25%.Type: GrantFiled: October 30, 2003Date of Patent: April 12, 2005Assignee: Ferrania, S.p.A.Inventors: Simona Fava, Roberta Bellunghi, Roberta Ganduglia, Luca Ceruti
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Patent number: 6875565Abstract: A silver halide emulsion which comprises silver halide tabular grains showing an average thickness lower than 0.15 ?m, an average diameter of at least 1.20 ?m and an average aspect ratio of at least 8:1 dispersed in a hydrophilic colloid mixture comprising from 10% to 30% by weight of dextran, from 20% to 40% by weight of a hydrogenated polysaccharide having an average molecular weight equal to or lower than 10,000, and from 40% to 60% by weight of gelatin and photographic element comprising it.Type: GrantFiled: October 30, 2003Date of Patent: April 5, 2005Assignee: Ferrania, S.p.A.Inventors: Luca Ceruti, Simona Fava
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Patent number: 6841205Abstract: The present invention refers to an ink jet receiving sheet having a surface pH value lower than 5.0 and comprising a support and at least a receiving layer containing a binder selected from the group consisting of gelatin and gelatin derivatives and at least a salt of a metal selected from the IIA and IIB groups of the periodic table of elements or complexes which comprise said metal salts. The ink jet receiving sheet of the invention provides minimum post printed drop sweating after stressed ageing in the resulting image, still maintaining a good glossiness.Type: GrantFiled: August 21, 2000Date of Patent: January 11, 2005Assignee: Ferrania, S.p.A.Inventors: Alain Dominique Sismondi, Giuseppe Loviglio, Marco Serafini, Pierfiore Malfatto, Diego Brignone
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Patent number: 6815154Abstract: The present invention relates to a light-sensitive emulsion, and a light-sensitive photographic material containing the same, comprising silver bromoiodide grains of a core shell structure comprising: a) an inner core consisting essentially of silver bromide or silver bromoiodide and having a silver iodide content within the range of 0 to 10 mole %, and b) a plurality of shells consisting essentially of silver bromide or silver bromoiodide, wherein said silver bromoiodide grains exhibit an average grain size lower than 0.60 micrometer, an average grain thickness lower than 0.15 micrometer, and an average aspect ratio lower than 5:1.Type: GrantFiled: July 25, 2003Date of Patent: November 9, 2004Assignee: Ferrania, S.p.A.Inventors: Davide Pirotto, Massimiliano Scioscia, Dario Stefanini, Luisa Tavella
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Publication number: 20040192848Abstract: The present invention refers to a polymeric optical film the polymer of the polymeric optical film consisting essentially of one or more polyarylates having repeating units represented by the general structure: 1Type: ApplicationFiled: August 18, 2003Publication date: September 30, 2004Applicant: Ferrania, S.p.AInventors: Simone Angiolini, Mauro Avidano, Paolo Salvarani, Roberto Bracco
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Patent number: 6796650Abstract: An ink jet printing system includes an ink receiving sheet and an ink-jet printer. The ink receiving sheet includes a support, at least one receiving layer and a top coat layer. The ink-jet printer includes an ink-jet cartridge comprising an ink. The receiving layer includes a hydrophilic binder and a vinyl polymeric compound and has a total coverage weight of at least 12 g/m2, and the top coat layer is free of vinyl polymeric compounds and comprises a hydrophilic binder and a corn starch matting agent. The ink includes a dye selected from the group consisting of azo and disazo dye at a concentration higher than 4% by weight, in order to achieve an optical density higher than 3.00.Type: GrantFiled: May 20, 2003Date of Patent: September 28, 2004Assignee: Ferrania, S.p.A.Inventors: Diego Brignone, Paola Franceschini, Andrea Gagliardo, Giovanni Maria Manca, Luigina Gino, Fulvio Cominetti
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Patent number: 6793333Abstract: An ink receiving sheet includes a support, at least one receiving layer and a top coat layer. The receiving layer includes a hydrophilic binder and a vinyl polymeric compound and has a total coverage weight of at least 12 g/m2. The top coat layer is free of vinyl polymeric compounds and includes a hydrophilic binder and a corn starch matting agent.Type: GrantFiled: May 20, 2003Date of Patent: September 21, 2004Assignee: Ferrania, S.p.A.Inventors: Diego Brignone, Paola Franceschini, Andrea Gagliardo, Giovanni Maria Manca
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Publication number: 20040152025Abstract: The present invention relates to a light-sensitive emulsion, and a light-sensitive photographic material containing the same, comprising silver bromoiodide grains of a core shell structure comprising: a) an inner core consisting essentially of silver bromide or silver bromoiodide and having a silver iodide content within the range of 0 to 10 mole %, and b) a plurality of shells consisting essentially of silver bromide or silver bromoiodide, wherein said silver bromoiodide grains exhibit an average grain size lower than 0.60 micrometer, an average grain thickness lower than 0.15 micrometer, and an average aspect ratio lower than 5:1.Type: ApplicationFiled: July 25, 2003Publication date: August 5, 2004Applicant: Ferrania S.p.A.Inventors: Davide Pirotto, Massimiliano Scioscia, Dario Stefanini, Luisa Tavella
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Patent number: 6764727Abstract: The ink jet receiving sheet of the invention comprises a support and at least one ink receiving layer, characterized in that said ink receiving layer comprises a high boiling organic solvent and a non-ionic surfactant dispersed in a hydrophilic binder as additives to improve black density of the resulting image.Type: GrantFiled: August 21, 2000Date of Patent: July 20, 2004Assignee: Ferrania S.p.A.Inventors: Alain Dominique Sismondi, Giuseppe Loviglio, Domenico Marinelli, Andrea Novelli
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Publication number: 20040086814Abstract: A silver halide emulsion which comprises silver halide tabular grains showing an average thickness lower than 0.15 &mgr;m, an average diameter of at least 1.20 &mgr;m and an average aspect ratio of at least 8:1 dispersed in a hydrophilic colloid mixture comprising from 10% to 30% by weight of dextran, from 20% to 40% by weight of a hydrogenated polysaccharide having an average molecular weight equal to or lower than 10,000, and from 40% to 60% by weight of gelatin and photographic element comprising it.Type: ApplicationFiled: October 30, 2003Publication date: May 6, 2004Applicant: Ferrania, S.p.A.Inventors: Luca Ceruti, Simona Fava
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Publication number: 20040086813Abstract: The present invention relates to a new silver halide tabular grain emulsion, wherein said silver halide emulsion comprises tabular grains having average thickness lower than 0.15 &mgr;m, an average diameter of at least 1.20 &mgr;m and an average aspect ratio of at least 8:1, and showing a coefficient of diameter variation COVd within the range of from 31% to 44% and a coefficient of thickness variation COVt lower than 25%.Type: ApplicationFiled: October 30, 2003Publication date: May 6, 2004Applicant: Ferrania, S.p.A.Inventors: Simona Fava, Roberta Bellunghi, Roberta Ganduglia, Luca Ceruti
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Publication number: 20040072940Abstract: The present invention relates to a process for synthesizing a particulate copolymer comprising: providing a reaction mixture comprising a reaction medium, a polymerization stabilizer, a water-insoluble ethylenically unsaturated monomer and an ethylenically unsaturated monomer containing hydrophilic functionality, said reaction mixture having a viscosity value of at least 10 cps measured at 40° C., and polymerizing the water-insoluble ethylenically unsaturated monomer and the ethylenically unsaturated monomer containing hydrophilic functionality. The polymerization reaction is preferably conducted at a temperature lower than 100° C. and activated by a polymerization catalyst. The resulting particulate copolymer dispersion comprises copolymer particles showing a weight average diameter size in the range of microns and absence of defects, such as coagulant or agglomerates.Type: ApplicationFiled: September 26, 2003Publication date: April 15, 2004Applicant: Ferrania, S.p.A., RecordationInventor: Paola Franceschini
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Patent number: 6720043Abstract: The present invention refers to an ink jet receiving sheet for ink-jet printers comprising a support and at least one ink receiving layer, wherein said ink receiving layer comprises a binder selected from the group consisting of gelatin and gelatin derivatives and at least one saccharide derivative selected from the group consisting of mono-, oligo-, or poly-saccharides as additive agents to improve glossiness.Type: GrantFiled: August 21, 2000Date of Patent: April 13, 2004Assignee: Ferrania, S.p.A.Inventors: Alain Dominique Sismondi, Andrea Novelli, Domenico Marinelli, Giuseppe Loviglio
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Patent number: 6670111Abstract: The present invention refers to a process for preparing a dispersion which comprises codispersing in an aqueous medium a sucrose derivative represented by the following general formula (1), wherein substituents X1 to X8, being the same or different, are represented by a hydrogen atom, an alkyl group or an acyl group, with the proviso that at least four of the X1 to X8 substituents are different from hydrogen and that the total sum of the carbon atoms of X1 to X8 substituents is at least sixteen; and a photographic compound represented by the following general formula (2), wherein R and R1 each independently represent a hydrogen atom, an alkyl group, an alkylene group, a heterocyclic group or an aryl group; R2, R3 and R4 each independently represent a hydrogen atom, an alkyl group, an aryl group and R3 and R4 may be combined to form a 6-membered ring.Type: GrantFiled: September 5, 2002Date of Patent: December 30, 2003Assignee: Ferrania, S.p.A.Inventors: Corrado Balestra, Mauro Besio, Emilio Prosperi
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Patent number: 6664038Abstract: A silver halide emulsion which comprises silver halide grains dispersed in a hydrophilic colloid mixture comprising from 5% to 25% by weight of dextran, from 20% to 40% by weight of hydrogenated poly-saccharide having an average molecular weight equal to or lower than 10,000, and from 40% to 60% by weight of gelatin. A fore-hardened photographic material comprising such an emulsion and the use of such an emulsion in a photographic material increases the sensitometry and mechanical resistance of such a photographic material.Type: GrantFiled: September 27, 2002Date of Patent: December 16, 2003Assignee: Ferrania, S.p.A.Inventors: Luca Ceruti, Eva Genesio, Gianluigi Molinari, Ivo Zullo
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Publication number: 20030228429Abstract: The present invention relates to an ink-jet recording medium having an ink-receiving layer comprising a solution of alumina hydrate, polyvinyl alcohol with saponification degree lower than 90%, boric acid or a borate, and at least a surfactant.Type: ApplicationFiled: June 3, 2003Publication date: December 11, 2003Applicant: Ferrania, S.p.A.Inventors: Marcella Ercoli, Alessandro Gunnella, Danilo Ferraro
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Publication number: 20030222964Abstract: An ink jet printing system comprises an ink receiving sheet and an ink-jet printer. The ink receiving sheet comprises a support, at least one receiving layer and a top coat layer. The ink-jet printer comprises an ink-jet cartridge comprising an ink. The receiving layer comprises a hydrophilic binder and a vinyl polymeric compound and has a total coverage weight of at least 12 g/m2, and the top coat layer is free of vinyl polymeric compounds and comprises a hydrophilic binder and a corn starch matting agent. The ink comprises a dye selected from the group consisting of azo and disazo dye at a concentration higher than 4% by weight, in order to achieve an optical density higher than 3.00.Type: ApplicationFiled: May 20, 2003Publication date: December 4, 2003Applicants: Ferrania S.p.A., Olivetti i-Jet S.p.A.Inventors: Diego Brignone, Paola Franceschini, Andrea Gagliardo, Giovanni Maria Manca, Luigina Gino, Fulvio Cominetti
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Publication number: 20030222963Abstract: An ink receiving sheet comprises a support, at least one receiving layer and a top coat layer. The receiving layer comprises a hydrophilic binder and a vinyl polymeric compound and has a total coverage weight of at least 12 g/m2. The top coat layer is free of vinyl polymeric compounds and comprises a hydrophilic binder and a corn starch matting agent.Type: ApplicationFiled: May 20, 2003Publication date: December 4, 2003Applicant: Ferrania S.p.A.Inventors: Diego Brignone, Paola Franceschini, Andrea Gagliardo, Giovanni Maria Manca
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Patent number: 6632886Abstract: The present invention refers to an optical film comprising one or more polyarylates having at least some units represented by the general structure: wherein A represents one or more different bisphenolfluorene radicals having the general formula (I): wherein R1 and R2 independently represent an alkyl group, a halogen, an alkoxy group, an acyl group, a phenyl group or a nitrile group, with the proviso that R1 and R2 are not both an alkyl group; R3, R4, R5 and R6 represent a hydrogen atom, an alkyl group, a halogen, an alkoxy group, an acyl group, a phenyl group, a nitro group, or a nitrile group; B represents one or more different dicarboxy radicals having the formula: wherein X is a divalent hydrocarbon group having from 1 to 20 carbon atoms, and n is the number of the repeating units which build up the polymer and is a positive integer higher than 20.Type: GrantFiled: April 10, 2001Date of Patent: October 14, 2003Assignee: Ferrania, S.p.A.Inventors: Simone Angiolini, Mauro Avidano, Paolo Salvarani, Roberto Bracco
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High purity 9,9-bis-(hydroxyphenyl)-fluorene and method for the preparation and purification thereof
Patent number: 6620979Abstract: A 9,9-bis (4-hydroxyphenyl) fluorene compound showing a melting curve maximum of at least 226.00° C. and a melting curve width at 5% equal to or lower than 1.30° C. A purification process for the preparation of 9,9-bis (4-hydroxyphenyl) fluorene compounds comprising a first purification step employing acetonitrile and a second purification step employing a solvent selected from the group consisting of aliphatic alcools, a mixture of aromatic hydrocarbons and aliphatic alco-hols and a mixture of aromatic hydrocarbons and nitrites.Type: GrantFiled: April 8, 2002Date of Patent: September 16, 2003Assignee: Ferrania, S.p.A.Inventors: Simone Angiolini, Mauro Avidano