Identified Reactant Isolating Material Or Capsule Wall Material Or Binder Resin Patents (Class 503/214)
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Patent number: 6432874Abstract: A thermally sensitive recording paper having a recording surface which when a postage stamp or a revenue stamp is adhered to the recording surface requires at least ten cycles of a removal test procedure to remove at least one third of the adhered surface of the stamp from the recording surface of the thermally sensitive recording paper, wherein the removal test procedure comprises adhering the postage stamp or revenue stamp to the recording surface of the thermally sensitive recording paper, hanging the recording paper over an iron bar of about 8 mm diameter with the postage stamp or revenue stamp on an outer surface of the recording paper, adjusting the recording paper such that equal lengths are on either side of the iron bar, attaching to one end of the thermally sensitive recording paper a weight of about 500 g, holding the other end of the thermally sensitive recording paper by hand and carrying out a pull down ant put back cycle motion of the hand to move the postage stamp or revenue stamp over the iroType: GrantFiled: May 17, 2000Date of Patent: August 13, 2002Assignee: Nippon Paper Industries Co, LtdInventors: Tadakazu Fukuchi, Kaoru Hamada, Kunio Takebayashi, Hidenori Ogawa, Yoshimi Midorikawa, Reiko Sato, Yoshihide Kimura
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Patent number: 6383982Abstract: A color developer composition comprising (A) a color developer containing a polyvalent metal salt of a salicylic acid derivative, and (B) a polyester polyol having in the molecule skeleton at least one carbonate bond or ester bond, and a derivative thereof, an aqueous dispersion and a color developing ink using this color developer composition, and a recording sheet having a layer containing this color developer composition on a base material.Type: GrantFiled: May 2, 2000Date of Patent: May 7, 2002Assignee: Mitsui Chemicals, Inc.Inventors: Jotaro Kida, Yoshimitsu Tanabe, Nobuhiro Takizawa, Masakatsu Nakatsuka
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Patent number: 6361839Abstract: A hot stamping foil includes a carrier, and disposed thereon, a thermochromic layer. The thermochromic layer includes a mixture of a thermochromic compound, a sizing or adhesive compound, a release compound, and an antimicrobial compound. The hot stamping foil is useful in creating various visual effects and also preventing the growth of microbes on a medium to which the hot stamping foil is applied.Type: GrantFiled: June 8, 1999Date of Patent: March 26, 2002Assignee: National Ink IncorporatedInventors: Saul Salgado, Saul Heiman, Bruce Gindelberger, Snehal Desai
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Publication number: 20010056038Abstract: In a multi-color image-forming medium, a substrate is coated with a color-developing layer, which is formed as a heat-sensitive color-developing layer containing a plurality of pressure-sensitive microcapsules uniformly distributed therein. Each microcapsule is filled with a dye exhibiting a first single-color, and features a characteristic to be broken when being subjected to a predetermined pressure. The heat-sensitive color-developing layer features a characteristic to be molten when being subjected to a first temperature, so that the microcapsules can be directly subjected to the predetermined pressure. The heat-sensitive color-developing layer further features a thermal-color-developing characteristic to develop a second single-color when being subjected to a second temperature more than the first temperature.Type: ApplicationFiled: April 24, 2001Publication date: December 27, 2001Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHAInventor: Minoru Suzuki
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Publication number: 20010053746Abstract: In a color image-forming medium, a substrate is coated with a color-developing layer which is composed of at least one kind of heat-sensitive color-developing component, and a plurality of pressure-sensitive microcapsules. Each of the pressure-sensitive microcapsules is filled with a dye exhibiting a first single-color, and features a pressure/temperature characteristic to be broken when being subjected to a predetermined pressure within a first temperature range. The heat-sensitive color-developing component features a thermal color-developing characteristic to develop a second single color within a second temperature range defined by a first critical temperature and a second temperature. The first critical temperature is in the first temperature range, and the second critical temperature exceeds an upper limit temperature of the first temperature range.Type: ApplicationFiled: April 24, 2001Publication date: December 20, 2001Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHAInventors: Minoru Suzuki, Kazuyuki Shimbo, Yukio Kubota
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Patent number: 6331374Abstract: The present invention relates to an imaging system, which comprises a support having a front and rear surface, at least one layer of microcapsules or at least one layer of microcapsules and developer in the same layer or at least one layer of microcapsules and developer in separate layers, on said front surface of the support, wherein the microcapsules or developer or microcapsules and developer are dispersed in a carrier of the invention, said carrier is capable of transferring and adhering developed image and non-image areas from said front surface of said support upon the application of heat energy to the rear surface of the support, said carrier strips from said front surface of the support by liquefying and releasing from said support when heated, said liquefied carrier providing adherence to a receptor element by flowing onto said receptor element and solidifying thereon, said adherence does not require an external adhesive layer, with the proviso that the carrier is not capable of reacting to form an iType: GrantFiled: March 31, 2000Date of Patent: December 18, 2001Assignee: Foto-Wear, Inc.Inventors: Donald S. Hare, Scott A. Williams
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Patent number: 6329317Abstract: A method of decoloring an image formed on a paper sheet by using an image forming material containing a color former, a developer and a decolorizer, comprising the steps of bringing a solvent into contact with the image forming material for decoloring the image, and removing the residual solvent from the paper sheet.Type: GrantFiled: January 22, 1999Date of Patent: December 11, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Satoshi Takayama, Shigeru Machida, Kenji Sano
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Patent number: 6313066Abstract: A decolorable image forming material containing a color former, a developer and a binder resin, in which the binder resin has a property that it is compatible with the color former when the material is in contact with a solvent and that it keeps the compatible state when the solvent is removed, or has a property that it shifts an equilibrium between the color former and the developer to a non-developed side when the temperature of the material is raised and that it keeps the state shifted to the non-developed side when the temperature of the material is lowered.Type: GrantFiled: March 30, 2000Date of Patent: November 6, 2001Assignee: Kabushiki Kaisha ToshibaInventor: Satoshi Takayama
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Patent number: 6309452Abstract: A wet rub resistant ink composition comprises, by weight, at least about 15% carrier medium, colorant in an amount of no more than about 20%, and at least about 2% polymeric capsules having central cavities containing water. The composition is substantially free of film-forming resins. The ink composition may be used in combination with other ink compositions having different colors or shades to increase the color gamut of an ink system.Type: GrantFiled: December 2, 1999Date of Patent: October 30, 2001Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Ameeta B. Madhava, Anna M. Pearson, Ajay K. Suthar
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Patent number: 6306572Abstract: A substantially light-insensitive black and white thermographic material including a support and a thermosensitive element, containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the binder is a water-dispersible film-forming polymer with covalently bonded moieties with one or more acid groups or anhydrides thereof and the thermographic material is thermally developable under substantially water-free conditions; and a process for producing the substantially light-insensitive black and white thermographic material comprising the steps of: producing an aqueous dispersion of the substantially light-insensitive organic silver salt; producing one or more aqueous coating compositions containing together the aqueous dispersion of the substantially light-insensitive organic silver salt, the reducing agent and the binder; and applying the one or more aqueous coating compositions to the support thereby forming after dryType: GrantFiled: August 17, 1998Date of Patent: October 23, 2001Assignee: Agfa-GevaertInventors: Carlo Uyttendaele, Huub Van Aert, Frank Louwet, Ivan Hoogmartens
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Patent number: 6296999Abstract: A substantially light-insensitive black and white thermographic material comprising a polymeric or polymer-coated support, a subbing layer on the support and on the same side of the support as the subbing layer a thermosensitive element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the subbing layer contains a binder, less than 20% by weight of silica and covalently bonded acid groups in the binder, if present, are either substantially present as free acid or substantially present as acid salts and has a leachable non-fluoro-halide ion content into water at room temperature over a period of 120 minutes of less than 0.Type: GrantFiled: August 20, 1998Date of Patent: October 2, 2001Assignee: Agfa-GevaertInventors: Carlo Uyttendaele, Ingrid Geuens, Ivan Hoogmartens
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Patent number: 6265128Abstract: The present invention relates to an imaging system, which comprises a support having a front and rear surface, at least one layer of microcapsules or at least one layer of microcapsules and developer in the same layer or at least one layer of microcapsules and developer in separate layers, on said front surface of the support, wherein the microcapsules or developer or microcapsules and developer are dispersed in a carrier of the invention, said carrier is capable of transferring and adhering developed image and non-image areas from said front surface of said support upon the application of heat energy to the rear surface of the support, said carrier strips from said front surface of the support by liquefying and releasing from said support when heated, said liquefied carrier providing adherence to a receptor element by flowing onto said receptor element and solidifying thereon, said adherence does not require an external adhesive layer, with the proviso that the carrier is not capable of reacting to form an iType: GrantFiled: November 14, 1997Date of Patent: July 24, 2001Assignee: Foto-Wear, Inc.Inventors: Donald S. Hare, Scott A. Williams
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Patent number: 6207613Abstract: A reversible thermosensitive coloring composition including an electron donating coloring agent and an electron accepting color developer, wherein the composition achieves a colored state when heated at a temperature not lower than a coloring temperature and then cooled at a cooling speed (a), and the composition in the colored state achieves a non-colored state when heated at a temperature lower than the coloring temperature and not lower than an erasing temperature, or when heated at a temperature not lower than the coloring temperature and then cooled relatively slowly compared to the cooling speed (a), and wherein the electron accepting color developer includes a phenolic compound having the following formula (1): wherein n is an integer of from 1 to 3; m is an integer of from 1 to 20; r is 0 or an integer of from 1 to 3; X and Y independently represent a divalent group including a hetero atom; R1 represents a hydrocarbon group having from 1 to 20 carbon atoms; and R2 represents a hydrocType: GrantFiled: February 16, 1999Date of Patent: March 27, 2001Assignee: Ricoh Company, Ltd.Inventors: Masafumi Torii, Hiroaki Matsui, Masaru Shimada
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Patent number: 6197723Abstract: A thermosensitive recording material including a transparent substrate; a thermosensitive recording layer which is formed overlying the substrate and which includes an electron donating coloring agent, an electron accepting color developer and a binder resin; and an overcoat layer which is formed overlying the recording layer and which includes a binder resin which has substantially the same refractive index as the recording material, wherein at least one of the recording layer and a layer adjacent to the recording layer includes a light-heat converting agent and the recording material has transmittance not less than about 10% in a range of from 360 to 420 nm in wavelength. The recording material on which images are recorded is useful for a block copy for flexography, gravure printing, offset printing and screen printing.Type: GrantFiled: October 27, 1998Date of Patent: March 6, 2001Assignee: Ricoh Company Ltd.Inventor: Hiroshi Gotoh
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Patent number: 6184179Abstract: A thermographic recording material comprising a support and a thermosensitive element containing a substantially light-insensitive silver salt of an organic carboxylic acid, a reducing agent therefor in thermal working relationship therewith and at least one proteinaceous binder, wherein the thermosensitive element contains between 700 ppm and 5 ppm of a non-fluoro-halide ion with respect to the proteinaceous binders in the thermosensitive element and the thermographic recording material is thermally developable under substantially water-free conditions; and a process for the production thereof.Type: GrantFiled: May 6, 1999Date of Patent: February 6, 2001Assignee: Agfa-GevaertInventors: Yvan Gilliams, Carlo Uyttendaele, Ingrid Geuens, Yvan Hoogmartens
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Patent number: 6127314Abstract: The present invention provides a recording material comprising a substrate, a heat-sensitive layer formed on the substrate by a coating liquid containing (1) microcapsules containing a colorless or light-colored electron-donative dye precursor and (2) a dispersion of solids comprising color developers, and a protective layer formed on the heat-sensitive layer, wherein the dispersion of solids comprising color developers is a dispersion prepared by co-dispersing at least three color developers including at least one solid color developer, preferably a water-soluble color developer, in the form of solid particles and at least one amorphous color developer together with a water-soluble polymer, and wherein the solid particles of the color developers contained in the dispersion have particle diameters in the range of from 0.3 to 0.5 .mu.m and the haze of the heat-sensitive recording material is 55% or less.Type: GrantFiled: May 22, 1998Date of Patent: October 3, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Kunihiko Ohga, Makoto Ono, Yoshihito Hodosawa
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Patent number: 6008156Abstract: A thermal-sensitive color developing material containing metal particles and a matrix substance where the size of the metal particles irreversibly increase at room temperature due to cohesion, and a thermal-sensitive element using the thermal-sensitive color developing material are disclosed. The thermal-sensitive color developing material irreversibly develops a color at a temperature of room temperature or higher.Type: GrantFiled: December 5, 1997Date of Patent: December 28, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Ichiro Tanahashi, Takao Tohda, Hiroshi Kanno
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Patent number: 5994021Abstract: A thermographic material is disclosed which comprises a support and provided thereon, a recording layer containing a photolytic free radical generating agent capable of providing a free radical on absorption of light, a dye decolored by the free radical, and an anti-decolorizing agent, the photolytic free radical generating agent and dye being contained in a microcapsule in the recording layer, and the anti-decolorizing agent being present outside the microcapsule in the recording layer, wherein an image is formed by imagewise heating the thermographic material to mix the anti-decolorizing agent with the photolytic free radical generating agent and the dye to form a latent image, and then exposing the heated material to light which the photolytic free radical generating agent absorbs, so that the dye at the latent image portions is not decolored and the dye at portions other than the latent image portions is decolored.Type: GrantFiled: May 28, 1997Date of Patent: November 30, 1999Assignee: Konica CorporationInventors: Eisaku Katoh, Shuji Kida, Osamu Hatano, Kenzo Nakazawa
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Patent number: 5994262Abstract: A sheet set for temperature control comprises: a recording sheet that is provided on one surface of a substrate and has a recording layer incorporating a zinc salt of a salicylic acid derivative as a color acceptor, or a leuco dye; and an adhesive sheet that is provided on one surface of another substrate and has a first adhesive layer incorporating an adhesive, an ester derivative of the formula (1) or (2), and a leuco dye, or a zinc salt of a salicylic acid derivative as a color acceptor.Type: GrantFiled: June 12, 1998Date of Patent: November 30, 1999Assignee: OJI Paper Co., Ltd.Inventors: Takeshi Iida, Tetsuo Tsuchida
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Patent number: 5985791Abstract: A thermosensitive recording medium has a support, and thermosensitive recording layer formed thereon containing an electron-donating coloring compound, an electron-accepting compound, a binder resin, a liquid resin which is in a liquid state at room temperature, and a plasticizer.Type: GrantFiled: June 2, 1998Date of Patent: November 16, 1999Assignee: Ricoh Company, LtdInventor: Shinji Okada
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Patent number: 5981115Abstract: A reversible thermosensitive recording material which includes a recording layer including a resin, an electron donating coloring agent and an electron accepting coloring developer and in which an image is reversibly formed and erased by appropriately heating and cooling the recording layer, wherein the resin includes a resin crosslinked with the isocyanate compound. The reversible thermosensitive recording material has good image recording/erasing ability, and good durability.Type: GrantFiled: December 18, 1997Date of Patent: November 9, 1999Assignee: Ricoh Company, Ltd.Inventors: Hiromi Furuya, Tadafumi Tatewaki, Fumio Kawamura, Kyoji Tsutsui
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Patent number: 5932515Abstract: A developer sheet for use in pressure-sensitive carbonless paper which incorporates a hollow microspherical plastic pigment.Type: GrantFiled: November 25, 1997Date of Patent: August 3, 1999Assignee: The Mead CorporationInventor: John Kevin Rourke
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Patent number: 5922641Abstract: A coated front sheet useful in carbonless copy forms. The sheet has a moisture resistant coating of latex binder, color developer, and pigment in association with a substrate. The coating is formulated to permit formation of a legible image in use in the carbonless copy form, and to minimize the adverse effects of humid weather conditions. The substrate is resistant to degradation by moisture, and may be a moisture resistant polymer or paper impregnated with the moisture resistant coating.Type: GrantFiled: September 4, 1997Date of Patent: July 13, 1999Assignee: Moore Business Forms, Inc.Inventors: Rodney E. Williams, Kenneth D. Riggs
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Patent number: 5869421Abstract: A reversible thermosensitive recording material has a support and a reversible thermosensitive recording layer formed thereon, capable of reversibly assuming at least two different visible states depending upon the temperature thereof, containing an organic low-molecular weight material and a resin composition in which the organic low-molecular weight material is dispersed, the resin composition including a matrix resin, and a dispersion resin which has a glass transition temperature higher than that of the matrix resin, and having resin aggregates which are separately dispersed in the matrix resin in such a manner that the resin aggregates are associated with the matrix resin.Type: GrantFiled: August 21, 1997Date of Patent: February 9, 1999Assignee: Ricoh Company, Ltd.Inventors: Atsushi Kutami, Tohru Nogiwa, Fumihito Masubuchi, Haruhiro Horiuchi, Tetsuya Amano
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Patent number: 5869422Abstract: A reversible thermosensitive recording medium having a supporting substrate and a reversible thermosensitive recording layer formed on the supporting substrate, having the ratio, of two values of light intensity scattered by the recording layer at large angles and small angles, of more than or equal to two, the ratio of the two numbers of particles of low-molecular-weight organic material with the large size to small size, of more than or equal to 2%, and the ratio of the two numbers of the particles with the small size to the total particles, of more than or equal to 10%, is provided which has improved display quality and excellent durability for repeated recording and erasing cycles over an extended period of time.Type: GrantFiled: July 18, 1996Date of Patent: February 9, 1999Assignee: Ricoh Company, Ltd.Inventors: Suzuki Kazumi, Yoshihiko Hotta, Atsushi Kutami, Kunichika Morohoshi, Tetsuya Amano, Toru Nogiwa
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Patent number: 5863629Abstract: The copying system comprises a plurality of units in a stacked configuration, where each unit comprises two or several sheets of carbonless, repositionable self-adhesive paper. Image transfer upon writing pressure results in copies of the message made in a single unit but not on subsequent units in the stack. Image transfer is controlled by regulating the microcapsule size of the carbonless copying component on the first sheet in each unit and the basis weight of the last sheet of paper in each unit.Type: GrantFiled: September 30, 1996Date of Patent: January 26, 1999Assignee: Taiwan Hopax Chemicals Mfg., Co., Ltd.Inventors: Tsung-Tien Kuo, Hsieh-Chang Hsieh, Hsien-Min Kuo
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Patent number: 5804528Abstract: A thermosensitive recording material with a high resistance to fogging has a thermosensitive colored image-forming layer formed on a support and includes at least one colorless dye precursor, a color-developing agent and a binder, the dye precursor being contained in a plurality of fine solid composite particles prepared by dissolving a solute including the dye precursor in a solvent which includes a polymerization component including a polyvalent isocyanate compound; emulsifying the resultant solution in an aqueous medium; and subjecting the aqueous emulsion to a polymerization reaction to thereby form the fine solid composite particles in which the dye precursor is solid-dissolved in a solid thermoplastic resin matrix formed from a resultant polyurea or polyurethane polyurea resin.Type: GrantFiled: November 19, 1996Date of Patent: September 8, 1998Assignee: Oji Paper Co., Ltd.Inventors: Yasuyuki Aoki, Tomotsugu Takahashi, Akira Maeta, Rie Harunaga, Haruo Omura, Satoshi Fukui
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Patent number: 5798315Abstract: A microcapsule-containing oil-based coating liquid wherein the coating liquid comprises a hydrophobic core material-containing microcapsule particles dispersed individually in a state of primary particle in an oil varnish for ink use or a resin for coating use, and a solvent having an affinity for both the varnish or the resin and the surface of the microcapsule wall material in a state of having been attracted with the affinity to both the varnish or the resin and the surface layer of the microcapsule wall material. The preferred solvent is a lower divalent or multivalent alcohol.A preparative method of the foregoing coating liquid by utilizing vacuum distillation is also proposed.A sheet, like a duplicating sheet of paper coated with the foregoing oil-based coating liquid is further provided.According to the present invention, a water-based microcapsules system can be advantageously converted into an oil-based one without coagulating the primary microcapsule particles.Type: GrantFiled: February 6, 1997Date of Patent: August 25, 1998Assignee: Toppan Moore Co., Ltd.Inventors: Kei Etoh, Akira Hirasawa, Hisano Higurashi, Makoto Kawamura
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Patent number: 5792724Abstract: A thermosensitive recording material having high transmittance density, excellent reproducibility of fine dot images and half tone images under printing conditions ranging from low to high applied printing energy.The thermosensitive recording material, including a substrate and a thermosensitive coloring layer, formed on the substrate, the thermosensitive coloring layer including a leuco dye, a coloring developer for inducing color formation in the leuco dye upon application of heat thereto and binder resins, and an optional protective layer, formed on the thermosensitive coloring layer, wherein the binder resins include at least two resins having different glass transition temperature Tg and are present in total amount of more than about 0.25 parts by weight per 1 part of total weight of the thermosensitive coloring layer.Type: GrantFiled: April 23, 1996Date of Patent: August 11, 1998Assignee: Ricoh Co., Ltd.Inventors: Hideo Suzaki, Hideo Aihara
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Patent number: 5739077Abstract: This invention provides a transparent thermal recording medium, in which the transparent thermal recording medium comprises: a thermal recording layer, which is provided on a transparent layer, consisting essentially of an electron-donating chromophoric compound, an electron-accepting compound and binder resin; and a further-provided protective layer having an approximately equal refractive index to the refractive index of the thermal recording layer, wherein the binder resin is a compound having a group selected from a hydroxyl group and a carboxyl group. The transparent thermal recording medium can be effectively used for a block copy film, on which an image is formed, for plate-making, particularly, in photogravure, offset printing and screen process printing, because the transparent thermal recording medium has a contrast of light transmission factors between a color-imaging portion and a non-imaging portion, in which the contrast is not less than 50% at a wavelength ranging from 370 nm to 450 nm.Type: GrantFiled: September 17, 1996Date of Patent: April 14, 1998Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Goto, Hideaki Ema, Kiyoshi Sakai
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Patent number: 5726120Abstract: A coated front sheet useful in carbonless copy forms. The sheet has a moisture resistant coating of latex binder, color developer, and pigment in association with a substrate. The coating is formulated to permit formation of a legible image in use in the carbonless copy form, and to minimize the adverse effects of humid weather conditions. The substrate is resistant to degradation by moisture, and may be a moisture resistant polymer or paper impregnated with the moisture resistant coating.Type: GrantFiled: June 7, 1995Date of Patent: March 10, 1998Assignee: Moore Business Forms, Inc.Inventors: Rodney E. Williams, Kenneth D. Riggs
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Patent number: 5679615Abstract: A reversible heat-sensitive recording medium which includes at least a support and formed thereon a heat-sensitive recording layer including at least the following components: an electron-donating color-forming compound having a lactone ring, (b) an electron-accepting compound having a phenolic hydroxyl group, (c) at least one organic compound selected from compounds represented by formulae (I) to (V), and (d) a thermoplastic resin having an erasing action. The content of the thermoplastic resin having an erasing action is being from 15 to 70% by weight based on the total amount of components (a) to (d) Formulae (I) to (V) are as follows:R.sub.1 --CO--N(R.sub.2)R.sub.3 (I)R.sub.1 --CO--NH--R.sub.4 --NH--CO--R.sub.2 (II)R.sub.1 --CO--O--R.sub.2 (III)R.sub.1 --NH--CO--NH--R.sub.2 (IV)R.sub.1 --CO--R.sub.2 (V)wherein R.sub.1 represents an alkyl group, an aryl group, an alkenyl group, or a hydroxyalkyl group; R.sub.2 and R.sub.Type: GrantFiled: September 13, 1995Date of Patent: October 21, 1997Assignee: Tomoegawa Paper Co., Ltd.Inventors: Tatsuru Matsumoto, Kenichi Tanaka
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Patent number: 5674803Abstract: Rolls of heat-printable material have heat-printed end warning stripes for several feet along the edges of the material at the end of the roll. The stripes are formed by pressing a heated roller into contact with the material as it is slit and wound on take-up cores during manufacture.Type: GrantFiled: September 20, 1993Date of Patent: October 7, 1997Assignee: Labelon CorporationInventor: Sean Michael Delaney
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Patent number: 5624882Abstract: There is disclosed a coating composition for the preparation of a CF sheet (i.e. a receiving sheet) of a carbonless paper copying system comprising a CF sheet and a CB sheet (i.e. a donating sheet). The coating composition comprises a color developer and an extender, wherein the extender comprises a particulate inorganic material which has been modified by treatment with a treating agent which has (i) a non-polar hydrophobic portion comprising at least one hydrocarbon group having a chain length of from 8 to 30 carbon atoms and (ii) a polar portion which is capable of binding with sites on the surface of the pigment particles.Type: GrantFiled: May 27, 1994Date of Patent: April 29, 1997Assignee: ECC International LimitedInventor: Patrick A. C. Gane
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Patent number: 5614462Abstract: There is disclosed a coating composition for the preparation of a CF sheet (i.e. a receiving sheet) of a carbonless paper copying system comprising a CF sheet and a CB sheet (i.e. a donating sheet). The coating composition comprises a color developer and an extender, wherein the extender comprises a particulate inorganic material which has been modified by treatment with a treating agent which has (i) a non-polar hydrophobic portion comprising at least one hydrocarbon group having a chain length of from 8 to 30 carbon atoms and (ii) a polar portion which is capable of binding with sites on the surface of the pigment particles.Type: GrantFiled: April 12, 1996Date of Patent: March 25, 1997Assignee: ECC International LimitedInventor: Patrick A. C. Gane
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Patent number: 5612168Abstract: An image transfer sheet comprises a base sheet, an intermediate thermoplastic resin layer and a top developer layer containing a binder. The binder of the top layer and the thermoplastic resin of the intermediate layer include a polymer having a common monomer component so that separation of the top layer from the intermediate layer and splitting of the top layer are effectively prevented. This provides a clear, high quality image on an image receiving surface such as paper by transference of a developed image on the developer layer.Type: GrantFiled: May 19, 1993Date of Patent: March 18, 1997Assignee: Brother Kogyo Kabushiki KaishaInventor: Keiko Ishikawa
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Patent number: 5610118Abstract: A thermosensitive recording element having improved abrasion resistance, said element comprising (a) a support; (b) a first layer comprising an organic polymeric binder and either a substantially colorless electron donating dye precursor or an electron accepting compound or mixtures thereof; and (c) a second layer comprising an organic polymeric binder compatible with the binder in (b) and either a substantially colorless electron donating dye precursor or an electron accepting compound, wherein both dye precursor and electron accepting compound are present in the element and wherein the first layer is interposed between the support and second layer. These elements have wide application in the printing industry.Type: GrantFiled: December 29, 1994Date of Patent: March 11, 1997Assignee: International Paper CompanyInventor: Albert H. Smith
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Patent number: 5604176Abstract: A heat-sensitive recording material comprises a recording layer containing a colorless or light-colored basic dye and a developing agent on a support. The recording layer further contains a polyethylene having a melting point not lower than 60.degree. C., which is obtained as an emulsion not comprising a surfactant.The heat-sensitive recording material may be prepared by coating on a support an aqueous coating composition, which contains a colorless or light-colored basic dye and a developing agent together with a polyethylene emulsion comprising a polyethylene having a melting point not lower than 60.degree. C. but no surfactant (e.g. emulsifier), to form a recording layer.Type: GrantFiled: April 26, 1995Date of Patent: February 18, 1997Assignee: New Oji Paper Co., Ltd.Inventors: Yoshihiro Shimizu, Masato Kawai, Yasuyoshi Morita, Kohei Michikawa, Takehiro Minami
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Patent number: 5587350Abstract: A recording material comprising on a support (i) a heat sensitive layer comprising a substantially light insensitive organic silver salt, (ii) a protective layer containing a thermomeltable particle dispersed in a binder and (iii) a reducing agent being present in the heat sensitive layer and/or any other layer of the recording material on the same side of the support carrying the heat sensitive layer.Type: GrantFiled: March 28, 1995Date of Patent: December 24, 1996Assignee: Agfa-Gevaert N.V.Inventors: Bartholomeus C. Horsten, Carlo A. Uyttendaele, Guy D. A. Jansen, Ronald Schuerwegen
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Patent number: 5547914Abstract: The present invention provides a recording material comprising on a support (i) a heat sensitive layer comprising a substantially light insensitive organic silver salt, (ii) a protective layer containing calcined China clay dispersed in a binder and (iii) a reducing agent being present in the heat sensitive layer and/or another layer on the same side of the support carrying the heat sensitive layer. The present invention further provides a method for making images therewith. The obtained images may be used in medical diagnostics.Type: GrantFiled: October 4, 1995Date of Patent: August 20, 1996Assignee: Agfa-Gevaert, N.V.Inventors: Stefaan De Meutter, Eugeen Van Goethem, Ronald Schuerwegen, Bartholmeus Horsten
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Patent number: 5525572Abstract: An improved carbonless copy paper for use in magnetic image character recognition (MICR). Carbonless copy paper according to the present invention contains a coated front (CF) layer which contains a latex binding component. The improved carbonless copy paper of the present invention provides a more durable CF coating which when imprinted with indicia prevents sorting errors in magnetic image character recognition.Type: GrantFiled: August 20, 1992Date of Patent: June 11, 1996Assignee: Moore Business Forms, Inc.Inventor: Rodney E. Williams
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Patent number: 5518981Abstract: The invention relates to a process for producing multi-layered carbonless sheets on which indicia can be xerographically produced with little or no non-specific development. The process involves coating a sheet with a CB composition containing a carboxymethyl cellulose polymer, a crosslinker, a salt of a polyvalent metal ion and a small amount of a wall forming acrylic resin. The CB coating formed resists breakage and release of dye when non-specific pressure is applied to the sheet thereby resulting in CF copies having improved brightness and reduced non-specific development.Type: GrantFiled: November 30, 1994Date of Patent: May 21, 1996Assignee: Nashua CorporationInventors: Richard Nelson, Pat Y. H. Wang
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Patent number: 5489566Abstract: There is described, in thermographic recording films, the use of a compound containing at least two epoxide moieties in the protective layer and/or in a layer on top of the protective layer of thermographic recording films to reduce gouging and streaking of the printed image film and to reduce head build-up on the thermal printhead.Type: GrantFiled: January 10, 1994Date of Patent: February 6, 1996Assignee: Polaroid CorporationInventors: Edward J. Dombrowski, John R. McPherson, Sr.
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Patent number: 5484758Abstract: A binder formulation for improving the water resistance, especially the warm water resistance, of thermally-sensitive record material comprises a major proportion of an amide ammonium salt of a substantially non-esterified styrene/maleic anhydride copolymer and a minor proportion of polyvinyl alcohol.Type: GrantFiled: September 29, 1994Date of Patent: January 16, 1996Assignee: The Wiggins Teape Group LimitedInventor: Thomas S. Wald
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Patent number: 5478792Abstract: A heat-sensitive recording material with a heat-sensitive recording layer comprising a modified polyvinyl alcohol containing 2.5 to 8 mole % of a carboxyl group-containing monomer units and having a degree of saponification of 40 to 65 mole % and a viscosity average degree of polymerization. of 50 to 500; a dispersing agent comprising the above modified polyvinyl alcohol for heat-sensitive dyes or color developing agents that can make the heat-sensitive dyes form color upon heating; and a process for producing aqueous dispersions which comprises dispersing a heat-sensitive dye or a color developing agent that can make the heat-sensitive dye form color upon heating, in an aqueous medium with a dispersing agent of the above modified polyvinyl alcohol.Type: GrantFiled: September 13, 1994Date of Patent: December 26, 1995Assignee: Kuraray Co., Ltd.Inventors: Eriko Seno, Tetsuya Katayama, Hirotoshi Miyazaki
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Patent number: 5472930Abstract: A thermosensitive recording material contains a mono-, oligo- or polysaccharide and a catalyst in one or more binder layers arranged on a transparent support. A black-and-white image with high optical density, good grey step reproduction, great sharpness and good stability is formed when the material is heated imagewise, e.g. by means of a thermohead.Type: GrantFiled: February 10, 1994Date of Patent: December 5, 1995Assignee: Agfa-Gevaert AGInventors: Wolfgang Podszun, Herman Uytterhoeven
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Patent number: 5426086Abstract: A reversible thermosensitive recording medium includes a reversible thermosensitive recording layer which is composed of a matrix resin and an organic low-molecular material which is dispersed in the matrix resin, the transparency of the reversible thermosensitive recording layer being reversibly changeable depending upon the temperature of the reversible thermosensitive recording layer, wherein the reversible thermosensitive recording layer has a softening initiation temperature T.sub.A, the organic low-molecular-weight material has a higher crystallization temperature T.sub.B1 which is 80.degree. C. or more and a lower crystallization temperature T.sub.B2, the softening initiation temperature T.sub.A is between the higher crystallization temperature T.sub.B1 and the lower crystallization temperature T.sub.B2, and the higher crystallization temperature T.sub.B1 and the lower crystallization temperature T.sub.B2 satisfies the relationship of T.sub.B1 -T.sub.B2 .gtoreq.40.degree. C.Type: GrantFiled: September 2, 1994Date of Patent: June 20, 1995Assignee: Ricoh Company, Ltd.Inventors: Yoshihiko Hotta, Makoto Kawaguchi, Tetsuya Amano
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Patent number: 5418206Abstract: An abrasion resistant thermosensitive recording element having high gloss, and improved abrasion resistance and process of preparing said element are described. The element comprises (a) a support, (b) a first layer comprising an organic polymeric binder and a substantially colorless electron donating dye precursor, and (c) a second layer comprising an organic polymeric binder compatible with the binder in (b), an electron accepting compound capable of forming color by reaction with said dye precursor, and a crosslinking agent, wherein the first layer is interposed between the support and the second layer. These elements have wide application in the printing industry.Type: GrantFiled: October 22, 1991Date of Patent: May 23, 1995Assignee: International Paper CompanyInventor: Albert H. Smith
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Patent number: 5409880Abstract: A multi-color heat-sensitive recording material which comprises a support having thereon at least two heat-sensitive recording layers, each of which comprises a colorless or pale-color color forming agent which forms a color by heating, a color developer and a binder, an intermediate layer being incorporated between the two heat-sensitive recording layers and the intermediate layer comprising at least gelatin and/or a gelatin derivative and polyvinyl pyrrolidone and/or a polyvinyl pyrrolidone derivative, with the polyvinylpyrrolidone and/or the polyvinylpyrrolidone derivative having an average molecular weight of not more than 160,000, the content of which ranges from 1 to 20 percent by weight based on the weight of the gelatin and/or gelatin derivative.Type: GrantFiled: May 18, 1993Date of Patent: April 25, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Yuichi Itabashi, Akira Igarashi
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Patent number: RE35640Abstract: A reversible thermosensitive recording material is disclosed, which comprises (i) a reversible thermosensitive recording layer which comprises as the main components a matrix resin and an organic low-molecular-weight material dispersed in the matrix resin, and (ii) a light reflection layer made of a metal thin film, which is preferably surface-treated to have a specular gloss of 70 to 250% in accordance with JIS Z8741 or a surface roughness of 0.5 to 10 .mu.m in terms of the ten-point average roughness defined in JIS B0601. This reversible thermosensitive recording material may further comprises a crystal-growth controlling agent in the reversible thermosensitive recording layer.Type: GrantFiled: February 14, 1994Date of Patent: October 21, 1997Assignee: Ricoh Company, Ltd.Inventors: Yoshihiko Hotta, Keishi Kubo, Makoto Kawaguchi, Toru Nogiwa