Visible Imaging Using Radiation Only Other Than Heating By Surface Contact Or Convection Patents (Class 430/346)
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Patent number: 5206118Abstract: A color-change dosimeter film made of a halogen-containing polymer in which is dispersed an acid-sensitive leuco dye, which dye a) is substantially free from groups that are sensitive to high-energy radiation and b) becomes colored in acid. This color-change dosimeter film (1) remains substantially colorless upon exposure to artificial illumination, including fluorescent light, for at least several months, (2) becomes colored upon exposure to high-energy radiation and accurately indicates small changes in dosage by the intensity of its color, and (3) remains substantially unchanged in its intensity of that color after being stored for several months, whether or not exposed to artificial illumination. An article of either quantitative or qualitative determination of the extent of high-energy radiation exposure is also provided, displaying a colored message of words, codes, symbols, or patterns on a substrate after exposure to the high-energy radiation.Type: GrantFiled: June 19, 1991Date of Patent: April 27, 1993Assignee: Minnesota-Mining & Manufacturing CompanyInventors: Lu Ann N. Sidney, Doreen C. Lynch, Peggy S. Willett
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Patent number: 5198321Abstract: A method for forming an image is described which includes bringing a transparent heat-sensitive recording material including a transparent support made of a synthetic polymer having thereon a transparent heat-sensitive recording layer into contact with a light-absorbing material, at least at the time of effecting recording, and irradiating the light-absorbing material with a laser beam to heat the transparent heat-sensitive recording layer and to cause color formation therein. High speed, high density, and high quality recording can be performed with an increased light absorption efficiency.Type: GrantFiled: October 3, 1991Date of Patent: March 30, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Noriyuki Hosoi, Kotaro Nakamura
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Patent number: 5196284Abstract: An optical recording element comprising a thin film optical recording layer of an alloy is disclosed. The alloy is represented by the formula:Sb.sub.x Cd.sub.1-xwherein x is between about 0.68 and 0.83, and the formula:Sb.sub.x Cd.sub.y Sn.sub.z,wherein Sb.sub.x Cd.sub.y Sn.sub.z is within the polygon enclosed by Sb.sub.83 Cd.sub.17 -Sb.sub.46 Cd.sub.24 Sn.sub.30 -Sb.sub.42 Cd.sub.46 Sn.sub.12 -Sb.sub.68 Cd.sub.32 in a ternary Sb-Cd-Sn composition diagram.Type: GrantFiled: October 9, 1990Date of Patent: March 23, 1993Assignee: Eastman Kodak CompanyInventors: Kee-chuan Pan, Yuan-sheng Tyan, Fridrich Vazan
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Patent number: 5196297Abstract: This invention relates to novel recording materials which employ color-forming di- and triarylmethane compounds possessing certain S-containing ring-closing moieties, namely, or thiolactone, dithiolactone or thioether ring-closing moiety and to a method of forming color by contacting these dye precursor compounds with a Lewis acid material capable of opening the thiolactone, dithiolactone or thioether ring-closing moiety whereby the compound is rendered colored, that is, converted to its chromophore color.Type: GrantFiled: December 5, 1986Date of Patent: March 23, 1993Assignee: Polaroid CorporationInventors: Edward J. Dombrowski, Jr., James R. Freedman, Patrick F. King
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Patent number: 5178990Abstract: A method of identifying the output energy, main wavelength, position, pattern, etc., of light, which comprises irradiating a photosensitive coloring medium comprising a base material, a heat-sensitive coloring material, and a light absorptive material releasing heat sufficient for coloring the heat-sensitive coloring material by absorbing the light and identifying the output energy, main wavelength, position, pattern, etc., of the light from the colored extent thereof.Type: GrantFiled: August 9, 1990Date of Patent: January 12, 1993Assignee: Jujo Paper Co., Ltd.Inventors: Toshimi Satake, Tomoaki Nagai, Hiroshi Fukui, Miyuki Yokoyama, Akio Sekine
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Patent number: 5158862Abstract: This invention relates to the preparation of a supported modulating film having a permanent orange yellow imaged layer of the homopolymer of crystralline 5,7-dodecadiyn-1,12-bis(isopropyl carbamate) monomer having the structure ##STR1## and to the use of said film as a blue light modulator in the production of master printing plates or printed circuit boards.Type: GrantFiled: February 3, 1992Date of Patent: October 27, 1992Assignee: ISP Investments Inc.Inventor: Kou-Chang Liu
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Patent number: 5153106Abstract: The invention relates to a process for direct and permanent photopositive scribing on a thermochromic coating composition consisting essentially of certain thermosensitive aryl diacetylenes which contain a moiety selected from the group of sulfonyl, amino, urethanyl, carboxylate and nitro radicals, and a dye capable of absorbing radiation energy generated by a laser in a wavelength of from about 600 to about 1,500 nm and to the coating composition comprising said aryl diacetylene and energy absorbing dye.Type: GrantFiled: March 11, 1991Date of Patent: October 6, 1992Assignee: ISP Investments Inc.Inventor: Kou-Chang Liu
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Patent number: 5149616Abstract: This invention relates to the preparation of a supported modulating film having a permanent orange yellow imaged layer of the homopolymer of crystalline 5,7-dodecadiyn-1,12-bis(isopropyl carbamate) monomer having the structure ##STR1## and to the use of said film as a blue light modulator in the production of master printing plates or printed circuit boards.Type: GrantFiled: October 23, 1990Date of Patent: September 22, 1992Assignee: ISP Investments Inc.Inventor: Kou-Chang Liu
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Patent number: 5149617Abstract: This application relates to monomers and homopolymers of diacetylenic ethers having the formula ##STR1## wherein X is alkyl, alkenyl, aryl, alkaryl, aralkyl, aralkenyl, monoalkylamino or dialkylamino and Y is alkyl, alkenyl or ##STR2## where X' is independently selected from the group of X. The invention also relates to the method of preparing and using said alkoxy diacetylenes.Type: GrantFiled: October 25, 1991Date of Patent: September 22, 1992Assignee: ISP Investments Inc.Inventor: Kou-Chang Liu
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Patent number: 5139926Abstract: This invention relates to the preparation of a supported modulating film having a permanent yellow imaged layer of the homopolymer of 10,12-docosadiyndioic acid monomer; said monomer having the structure[HOOC(CH.sub.2).sub.8 --C.tbd.C].sub.2and to the use of said film as a blue light modulator in the production of master printing plates or printed circuit boards.Type: GrantFiled: October 23, 1990Date of Patent: August 18, 1992Assignee: ISP Investments Inc.Inventor: Kou-Chang Liu
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Patent number: 5139927Abstract: This invention relates to the preparation of a supported modulating film having a permanent yellow imaged layer of the homopolymer of a crystalline diacetylene cinnamate monomer ##STR1## and to the use of said film as a light modulator in the production of master printing plates or printed circuit boards.Type: GrantFiled: October 23, 1990Date of Patent: August 18, 1992Assignee: ISP Investments Inc.Inventors: Kou-Chang Liu, David F. Lewis, John C. Hornby
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Patent number: 5139928Abstract: The invention relates to the exposure of a recording film to an image transmitting device and to a thermochromic polyacetylenic recording film comprising, as an imageable medium, a supported, imageable crystalline polyacetylene monomer layer in contact with an imageable polyacetylene polymer in a mole ratio of between about 1:1 and about 1000:1 which medium additionally can contain an energy absorbing, heat transferring agent having an optical absorbance at a wavelength similar to that of the image transmitting device.Type: GrantFiled: October 23, 1990Date of Patent: August 18, 1992Assignee: ISP Investments Inc.Inventor: David F. Lewis
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Patent number: 5077181Abstract: Antimony-tin alloys including a third element are useful for phase change optical recording. Some preferred alloys have a higher amorphous to crystalline transition temperature and thus, amorphous areas are stable for longer periods. Other preferred alloys exhibit improved CNR or lower noise or other improved performance characteristics.Type: GrantFiled: May 2, 1990Date of Patent: December 31, 1991Assignee: Eastman Kodak CompanyInventors: Kee-Chuan Pan, Yuan-Sheng Tyan, Fridrich Vazan, Donald R. Preuss
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Patent number: 5055380Abstract: An aggregated-Group Ib metal colloid is prepared, which may be used to form stable color-differentiated images, by the selective application of thermal energy thereto. The metal aggregates, when exposed to thermal energy, revert either to the unaggregated metal or to an aggregate of lesser dimension. This change induces a color change in the material, which is clearly visible against those areas not so exposed. The metal aggregates, when dispersed in a polymeric matrix, are stable in the absence of heat.Type: GrantFiled: December 18, 1989Date of Patent: October 8, 1991Assignee: Eastman Kodak CompanyInventors: Sidney J. Bertucci, Hugh S. A. Gilmour
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Patent number: 5049472Abstract: A method of and an apparatus for recording an image on a recording medium. A heat-sensitive sheet having a light-transmissive base sheet provided with a heat-fusible supercooled substance layer is made to abut a copy original such that the heat-fusible supercooled substance layer faces the original image to be copied while flashlight is projected onto the base sheet of the heat-sensitive sheet. Thus, the image portion of the copy original to be copied absorbs the light transmitted through the heat-sensitive sheet and thereby generates heat so that an adhesive area containing a pattern corresponding to the original image is formed on the supercooled substance layer. After the heat-sensitive sheet has been removed from the copy original, such an adhesive area is transferred to the recording medium owing to the adhesiveness of the adhesive area.Type: GrantFiled: October 27, 1989Date of Patent: September 17, 1991Assignee: Canon Kabushiki KaishaInventors: Nagao Hosono, Yukio Nagase, Tatsuo Takeuchi, Hiroshi Satomura, Hidemi Egami, Yuji Sakemi, Yasushi Miura
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Patent number: 5039598Abstract: Processes for preparing ionographic imaging member including providing a flexible, shrinkable tube containing a dielectric film forming polymer having a T.sub.g of at least about -40.degree. C., charge decay of less than about 2 nonocoulombs per cm.sup.2 per second and elastic memory, providing a cylindrical support member having an outer diameter that is less than the inner diameter of the flexible tube, applying a continuous coating on the interior of the tube or on the exterior of the cylindrical support member, the coating comprising a material selected from the group consisting of an electrically conductive material, an adhesive material and mixture thereof, shrinking the tube to bring the inner surface of the tube and the outer surface of the cylindrical support member into intimate physical contact with the continuous coating. This imaging member may be employed in an ionographic imaging process.Type: GrantFiled: December 29, 1989Date of Patent: August 13, 1991Assignee: Xerox CorporationInventors: Dennis A. Abramsohn, John A. Frank, Joseph Mammino, Brendan C. Casey, Donald S. Sypula
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Patent number: 5035977Abstract: A dye-donor element for laser-induced thermal dye transfer comprising a support having thereon a dye layer and an infrared-absorbing material which is different from the dye in the dye layer, and wherein the infrared-absorbing material is an oxonol dye. In a preferred embodiment, the oxonol dye has the following formula: ##STR1## wherein: R.sup.1, R.sup.2 and R.sup.3 each independently represents hydrogen, halogen, cyano, alkoxy, aryloxy, acyloxy, aryloxycarbonyl, alkoxycarbonyl, carbamoyl, sulfonyl, acyl, acylamido, alkylamino, arylamino or a substituted or unsubstituted alkyl, aryl or hetaryl group; or any two of said R.sup.1, R.sup.2 and R.sup.3 groups may be joined together to complete a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; or either R.sup.1 or R.sup.2 may be joined to R.sup.4 or R.sup.6 to complete a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; or R.sup.2 or R.sup.3 may be joined to R.sup.5 or R.sup.Type: GrantFiled: June 16, 1989Date of Patent: July 30, 1991Assignee: Eastman Kodak CompanyInventors: Charles D. DeBoer, Steven Evans
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Patent number: 5035983Abstract: A laser-marking composition characterized by containing a non-black inorganic lead compound and a resin and a laser-marking method characterized by marking the surface of an object comprising said composition by exposure to laser beams having wavelengths falling in the far infrared regions.Type: GrantFiled: May 31, 1989Date of Patent: July 30, 1991Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Toshiyuki Kiyonari, Satoshi Hirabayashi, Naoto Kidokoro
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Patent number: 5034313Abstract: A particulate metastable Group Ib metal colloid is prepared is formed by plating a Group Ib metal onto small nuclei in a suspension to form non-spherical particles of varying color. The preparation is stable below about 100.degree. C., but when coated onto a support, can be used to form a visible image by application of thermal energy.Type: GrantFiled: April 28, 1989Date of Patent: July 23, 1991Assignee: Eastman Kodak CompanyInventor: David C. Shuman
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Patent number: 5034303Abstract: A dye-donor element for laser-induced thermal dye transfer comprising a support having thereon a dye layer and an infrared-absorbing material which is different from the dye in the dye layer, and wherein the infrared-absorbing material is a trinuclear cyanine dye. In a preferred embodiment, the trinuclear cyanine dye has the following formula: ##STR1## wherein: R.sup.1, R.sup.2 and R.sup.3 each independently represents a substituted or unsubstituted alkyl or cycloalkyl group having from 1 to about 6 carbon atoms or an aryl or hetaryl group having from about 5 to about 10 atoms;R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 each independently represents hydrogen, halogen, cyano, alkoxy, aryloxy, acyloxy, aryloxycarbonyl, alkoxycarbonyl, sulfonyl, carbamoyl, acyl, acylamido, alkylamino, arylamino or a substituted or unsubstituted alkyl, aryl or hetaryl group;or any of said R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 groups may be combined with R.sup.1, R.sup.2 or R.sup.Type: GrantFiled: June 16, 1989Date of Patent: July 23, 1991Assignee: Eastman Kodak CompanyInventors: Steven Evans, Charles D. DeBoer
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Patent number: 5034292Abstract: A method of forming visible images on a differentiated background comprises the application of thermal energy to a coating of metastable metal colloid on a support. Thermal energy is able to convert the metastable metal colloid to a stable spheroidal form. Computer control of a laser beam or thermal print head can be employed to provide highly resolved images carrying graphic, digital and textural information.Type: GrantFiled: March 13, 1990Date of Patent: July 23, 1991Assignee: Eastman Kodak CompanyInventors: Hugh S. A. Gilmour, David C. Shuman
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Patent number: 5030551Abstract: A method of laser marking ceramic materials, glazes, glass ceramics and glasses of any desired form, which comprises applying to the material to be marked a 100 to 10,000 .ANG. thick transparent layer of titanium dioxide, then irradiating said oxide layer with a pulsed laser such that the radiation is directed onto said layer in accordance with the form of the marking to be applied, and using laser light of a wavelength which is sufficiently absorbed by the oxide layer, so that a discolouration of said oxide layer is produced at the irradiated areas.Type: GrantFiled: April 2, 1990Date of Patent: July 9, 1991Assignee: Ciba-Geigy CorporationInventors: Fritz Herren, Manfred Hofmann
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Patent number: 5028792Abstract: Photochemical systems for the direct visualization of exposure to ultraviolet radiation that effect visible color changes involving a process in which a photoacid is formed upon irradiation of a nitro-substituted aromatic aldehyde with ultraviolet light and wherein proton transfer to a dye causes the dye to undergo a visible color change. The system undergoes such color change to an extent directly proportional to the cumulative amount of ultraviolet incident thereupon.Type: GrantFiled: April 27, 1989Date of Patent: July 2, 1991Assignee: Xytronyx, Inc.Inventor: Kary B. Mullis
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Patent number: 5026619Abstract: The invention relates to an optical data recording method which comprises addressing a recording device using an infra-red laser modulated with a waveform of the information to be recorded, wherein said recording device comprises an infra-red absorbing material and a photochromic fulgide which is converted into its colored form under the influence of the heat absorbed from the laser, and updating the recording by erasing undesired previously recorded data using a laser operation in the visible region of the spectrum.Type: GrantFiled: March 24, 1989Date of Patent: June 25, 1991Assignee: Plessey Overseas LimitedInventor: Clive Trundle
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Patent number: 5024927Abstract: An information recording medium comprising a substrate, and a recording layer formed thereon which comprises (a) a carbon-based material and (b) an optically reversible material whose optical characteristics can be reversibly changed, with the thermal decomposition temperature of the carbon-based material being higher than the melting point of the optically reversible material.Type: GrantFiled: October 4, 1989Date of Patent: June 18, 1991Assignee: Ricoh Company, Ltd.Inventors: Katsuyuki Yamada, Yukio Ide, Makoto Harigaya, Hiroko Iwasaki
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Patent number: 5019487Abstract: A master disc which is provided on one side with a reflective optical structure and a recording double-layer is exposed to a first laser beam which scans the optical structure and to a second laser beam which is controlled by the first beam, information bits in the form of bulges being formed in the recording layer due to exposure to the second beam, a metal skin being subsequently provided on the recording layer, in which metal skin the surface structure of the recording layer is copied and, finally, the matrix thus obtained being removed from the master disc.Type: GrantFiled: March 28, 1989Date of Patent: May 28, 1991Assignee: U.S. Philips CorporationInventors: Dirk J. Gravesteijn, Josephus M. Wijn, Johannes P. J. G. van Liempd
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Patent number: 5019480Abstract: A dye-donor element for laser-induced thermal dye transfer comprising a support having thereon a dye layer and an infrared-absorbing material which is different from the dye in the dye layer, and wherein the infrared-absorbing material is an indene-bridged-polymethine dye. In a preferred embodiment, the indene-bridged-polymethine dye has the following formula: ##STR1## wherein: R represents a substituted or unsubstituted alkyl or cycloalkyl group having from 1 to about 6 carbon atoms or an aryl or hetaryl group having from about 5 to about 10 atoms; R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each independently represents hydrogen, halogen, cyano, alkoxy, aryloxy, acyloxy, aryloxycarbonyl, alkoxycarbonyl, sulfonyl, carbamoyl, acyl, acylamido, alkylamino, arylamino or a substituted or unsubstituted alkyl, aryl or hetaryly group; or any two of said R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.Type: GrantFiled: June 16, 1989Date of Patent: May 28, 1991Assignee: Eastman Kodak CompanyInventors: Charles D. DeBoer, Steven Evans
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Patent number: 5015548Abstract: An optical recording element comprising a thin film optical recording layer of an alloy is disclosed. The alloy is represented by the formula Sb.sub.x Te.sub.1-x, wherein x is between about 0.58 and 0.75. The alloys have short erasure times (amorphous to crystalline transition) and excellent environmental stability.Type: GrantFiled: June 21, 1990Date of Patent: May 14, 1991Assignee: Eastman Kodak CompanyInventors: Kee-Chuan Pan, Yuan-sheng Tyan, Fridrich Vazan
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Patent number: 5013635Abstract: An information storage medium consists of a polycarbonate substrate and a recording layer formed on the substrate and containing an AgTe eutectic alloy, carbon, and hydrogen. Information is recorded on the medium by forming pits in the recording layer upon radiation of a laser beam, and is reproduced by radiating a reproducing laser beam onto the recording layer in which the pits are formed and detecting reflectances.Type: GrantFiled: November 29, 1989Date of Patent: May 7, 1991Assignee: Kabushiki Kaisha ToshibaInventors: Hideki Ohkawa, Norio Ozawa, Hiroyuki Higashino, Motonari Matsubara
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Patent number: 5006446Abstract: A medium for image formation which comprises a monomolecular film or monomolecular built-up film of a metal chelate compound and a process for image formation which comprises (1) manipulating the adsorption of a gas on a metal chelate compound and the desorption of the gas therefrom or (2) reducing metal ions in molecules of a metal chelate compound.Type: GrantFiled: July 20, 1988Date of Patent: April 9, 1991Assignee: Canon Kabushiki KaishaInventors: Masahiro Haruta, Hiroshi Matsuda, Hirohide Munakata, Yukuo Nishimura
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Patent number: 4985349Abstract: An information storage medium comprises a substrate and a recording layer formed on the substrate containing Te, Ge, C and H. The recording layer is formed by sputtering, with a Ge-Te alloy being used as a target and with a mixed gas of a noble gas and a hydrocarbon being used as a sputtering gas. The hydrocarbon content in the sputtering gas falls within a range of 3 to 35%. The composition of the target is Ge.sub.x Te.sub.100-x (where x is expressed by atomic %, and 5.ltoreq.x.ltoreq.20).Type: GrantFiled: December 22, 1989Date of Patent: January 15, 1991Assignee: Kabushiki Kaisha ToshibaInventors: Kideki Ohkawa, Norio Ozawa, Motonari Matsubara
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Patent number: 4981772Abstract: Antimony-tin alloys including a third element are useful for phase change optical recording. Some preferred alloys have a higher amorphous to crystalline transition temperature and thus, amorphous areas are stable for longer periods. Other preferred alloys exhibit improved CNR or lower noise or other improved performance characteristics.Type: GrantFiled: October 16, 1989Date of Patent: January 1, 1991Assignee: Eastman Kodak CompanyInventors: Kee-Chuan Pan, Yuan-Sheng Tyan, Fridrich Vazan, Donald R. Preuss
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Patent number: 4975355Abstract: An optical disk comprises a polycarbonate substrate, a first protective layer formed on the substrate and made of SiO.sub.2, a recording layer formed on the first protective layer and made of an In-Sb-Te alloy, a second protective layer formed on the recording layer and made of SiO.sub.2, and a surface protective layer formed on the second protective layer and made of an ultraviolet curable resin. The recording layer has a composition of In.sub.50-x Sb.sub.50 Te.sub.x (wherein x is in atomic % and falls within the range of 0<x<20).Type: GrantFiled: June 28, 1989Date of Patent: December 4, 1990Assignee: Kabushiki Kaisha ToshibaInventor: Katsumi Suzuki
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Patent number: 4970137Abstract: This invention concerns a process of mixing a dispersion comprising a substantially crystalline, image receptive polyacetylenic compound in an aqueous non-solvating binder solutions with an effective ripening amount of an organic liquid boiling above 30.degree. C. which is completely miscible with water at least in a proportion of 1:2 part per parts and in which said polyacetylene is soluble for a time and at an elevated temperature sufficient to effect crystalline growth and improved sensitivity to imaging by exposure to a source of radiation.Type: GrantFiled: March 9, 1989Date of Patent: November 13, 1990Assignee: GAF Chemicals CorporationInventors: David F. Lewis, Steward E. Purdy
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Patent number: 4965174Abstract: A recording medium is provided which comprises a recording layer comprising at least one set of image-forming units containing a region holding a photosensitive protein and a color-developing means capable of developing a color according to a change in the hydrogen ion concentration in the region. Each of said image-forming units within the same set having a photosensitive protein sensitive to a different wavelength.Type: GrantFiled: October 24, 1989Date of Patent: October 23, 1990Assignee: Canon Kabushiki KaishaInventors: Ryuichi Arai, Masahiro Haruta, Nobuko Yamamoto, Tetsuya Yano, Hiroyoshi Kishi, Masanori Sakuranaga
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Patent number: 4960680Abstract: Recording and record elements are disclosed. The elements have thin film optical recording layers of the SbInSn alloy. The alloy has a composition within a polygon abcdefg in a ternary SbInSn composition diagram as shown in FIG. 7 herein.Type: GrantFiled: September 25, 1989Date of Patent: October 2, 1990Assignee: Eastman Kodak CompanyInventors: Kee-Chuan Pan, Yuan-Sheng Tyan, Donald R. Preuss
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Patent number: 4950579Abstract: An optical recording medium and a method for preparing the medium in which information can be recorded and read by means of a focused modulated laser beam. The optical recording medium comprises a substrate containing on at least one surface, a layer of organic material having an anisotropic and/or inhomogeneous physical microstructure which gives the layer a non-uniform density gradient along the direction perpendicular to the plane of the layer before exposure to a laser beam, whereby upon exposure to electromagnetic radiation the level of anisotropy and/or inhomogeneity is reduced.Type: GrantFiled: July 8, 1988Date of Patent: August 21, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mark K. Debe, Kam K. Kam, Daniel R. Field
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Patent number: 4906556Abstract: An optical recording medium comprising a substrate and a recording layer made of metal and/or semi-metal and on which data can be recorded with a laser beam, wherein a plasma polymerization layer is formed on at least an upper surface of said recording layer.Type: GrantFiled: July 10, 1989Date of Patent: March 6, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuo Nishikawa, Yonosuke Takahashi
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Patent number: 4894303Abstract: The invention relates to high energy beam-sensitive glass articles exhibiting insensitivity and/or inertness to artinic radiation, i.e., glass articles which are darkened and/or colored within a thin surface layer of, e.g., about 0.1-3 .mu.m upon exposure to high energy beams, electron beams, and ion beams in particular, without a subsequent development step, and which need no fixing to stabilize the colored image, since both the recorded image and the glass article are sensitive to radiation in the spectral range of UV, and longer, wavelengths. More particularly, the instant invention is concerned with Ag+ ion-exchanged glass articles having base glass within alkali metal silicate composition fields containing at least one of the oxides of transition metals which have one to four d-electrons in an atomic state.Type: GrantFiled: June 1, 1987Date of Patent: January 16, 1990Assignee: Canyon Materials Research & EngineeringInventor: Che-Kuang Wu
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Patent number: 4891305Abstract: This invention relate to an optical information recording medium, characterized by having an organic thin film recording layer containing at least one of compounds expressed by the general formula (I), (II), (III) and (IV): ##STR1## (wherein in the above formulas, A, B, D and E represent a substituted or non-substituted aryl group; R.sub.1 to R.sub.8 may be the same or different and represent hydrogen atom, halogen atom or alkyl group; Y represents a divalent residue having atomic groups necessary for forming a five-membered ring or six-membered ring; m, n and l represents 0, 1 or 2; ans X.sup.Type: GrantFiled: July 7, 1988Date of Patent: January 2, 1990Assignee: Ricoh Co., Ltd.Inventors: Hideaki Oba, Tsutomu Sato, Masaakira Umehara, Yutaka Ueda, Tetsu Yamamuro, Michiharu Abe
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Patent number: 4886717Abstract: A photochromic material comprising a thin film of montmorillonite intercalation compound which has as a guest organic metal complex ions exhibiting a property of accepting electrons in a photo-excited state,a photochromic device comprising; (i) a transparent electrode layer 1, (ii) a transparent layer 2 of polycrystalline n-type semiconductor, (iii) the above-mentioned thin film 3 of montmorillonite intercalation compound, (iv) an electrolytic layer 6 containing an electron-donative reducing agent and (v) an opposed transparent electrode layer 4, anda method for recording and erasing information, comprising the steps of forming the above-mentioned thin film 3 of montmorillonite intercalation compound over the transparent layer 2 of polycrystalline n-type semiconductor, irradiating with light the thin film 3 in contact with the electrolyte 6 containing an electron-donative reducing agent to develop color on the irradiated site of the film and applying a bias voltage to the film being exposed to light to removeType: GrantFiled: September 8, 1987Date of Patent: December 12, 1989Inventors: Masafumi Jinno, Ichiro Kake, Yuichiro Nishina, Tsuyoshi Masumoto
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Patent number: 4865948Abstract: This invention provides an optical recording material comprising a base and a thin film formed on the base and composed of oxides which are represented by the formula (V.sub.2 O.sub.5).sub.1-x. (M.sub.y O.sub.z).sub.x wherein M.sub.y O.sub.z is at least one of metal oxides, metalloid oxides and non-metal oxides, and 0.ltoreq.x<1 and which have an amorphous or layer structure and a process for preparing an optical recording material, the process comprising the steps of applying to a base a solution, sol solution or gel solution of amorphous oxides represented by the formula (V.sub.2 O.sub.5).sub.1-x.(M.sub.y O.sub.z).sub.x wherein M.sub.y O.sub.z is at least one of metal oxides, metalloid oxides and nonmetal oxides, and 0.ltoreq.x<1, and evaporating off the solvent.Type: GrantFiled: August 7, 1985Date of Patent: September 12, 1989Assignees: Research Development Corporation of Japan, Otsuka Kagaku Kabushiki Kaisha, Nikon CorporationInventors: Tsuyoshi Masumoto, Kenji Suzuki, Mika Okubo, Akira Matsumoto, Nobuhiro Ota, Shuji Masuda
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Patent number: 4865955Abstract: Optical recording and record elements are provided. The elements comprise a write-once amorphous thin-film optical recording layer of an alloy having a composition within a polygon in a ternary composition diagram of antimony, aluminum, and tin; wherein(a) the composition diagram is according to FIG.Type: GrantFiled: October 11, 1988Date of Patent: September 12, 1989Assignee: Eastman Kodak CompanyInventors: Kee-Chuan Pan, Yuan-Sheng Tyan, Fridrich Vazan
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Patent number: 4847184Abstract: Method for producing a picture on the surface of a substrate by laser-printing comprising the steps of:generating still video information consisting of a series of gradational signals each of which corresponds to each of picture elements within a predetermined frame;preparing a substrate having a surface carbonizable or discolorable with heating;generating a laser beam having a sufficient energy to cause the carbonizing or discoloring of said surface;modulating the laser beam in accordance with said video information;scanning the modulated laser beam in accordance with said video information within said frame; anddirecting and focusing said scanned laser beam to form a sweeping spot over the surface area of said substrate corresponding to said predetermined frame, thereby producing a graphic pattern consisting of picture elements individually gradationally carbonized or discolored.Type: GrantFiled: February 3, 1987Date of Patent: July 11, 1989Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Itaru Taniguchi, Toshiya Katsuragi
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Patent number: 4837127Abstract: A recording medium comprising a substrate and a recording layer arranged on the substrate, said recording layer being removable by irradiation of radiation having high energy density thereto through evaporation or fusion in the area having received said irradiation, which is characterized in that said recording layer comprises indium and at least one metal compound selected from the group consisting of a metal sulfide, a metal fluoride and a metal oxide and contains at least one metal showing a surface tension of not less than 600 dyne/cm within temperatures of the melting point thereof to a temperature higher than the melting point by 300.degree. C.Type: GrantFiled: May 28, 1986Date of Patent: June 6, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinichiro Ohara, Kyoichi Naruo
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Patent number: 4837134Abstract: A data card for optical information featuring a gelatin layer having a thin black crust at the top of the layer. The crust is formed by developed black irregular oblong silver particles within the top 0.5 micron of the gelatin colloid matrix. The remainder of the colloid matrix is substantially clear gelatin and a reflective metallic layer is disposed below the gelatin. The strip is laminated into a wallet-size card and may be pre-patterned during formation of the crust with control indicia or pre-recorded data. User data may be recorded by modifying the black silver particles in the crust with a laser to expose the reflective underlayer. A laser or other light source is used to read data on the medium with optical contrast between the black surface metallic layer underlying the gelatin layer which can be observed in the recorded spots.Type: GrantFiled: April 16, 1987Date of Patent: June 6, 1989Assignee: Drexler Technology CorporationInventors: Eric W. Bouldin, Jerome Drexler
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Patent number: 4818666Abstract: Erasable optical recording element according to FIG. 1 having a substrate 1 and a recording layer 4 which is provided thereon and which satisfies the formula (QSb).sub.100-x M.sub.x, wherein Q is the element Ga or In, M is a metal or chalcogenide element and x has the value 2-15, as well as a method of optically recording and erasing information in which under the influence of pulsated laser light amorphous info areas 10 are formed in the recording layer 4, which areas can be reverted by laser light to the crystalline phase and can be erased.Type: GrantFiled: June 2, 1986Date of Patent: April 4, 1989Assignee: U.S. Philips CorporationInventors: Dirk J. Gravesteijn, Carlus J. Van Der Poel
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Patent number: 4818665Abstract: A medium for image formation which comprises a monomolecular film or monomolecular built-up film of a metal chelate compound and a process for image formation which comprises (1) manipulating the adsorption of a gas on a metal chelate compound and the desorption of the gas therefrom or (2) reducing metal ions in molecules of a metal chelate compound.Type: GrantFiled: March 23, 1987Date of Patent: April 4, 1989Assignee: Canon Kabushiki KaishaInventors: Masahiro Haruta, Hiroshi Matsuda, Hirohide Munakata, Yukuo Nishimura
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Patent number: 4816385Abstract: According to the method a rotating recording element 23 (FIG. 3) having a crystalline recording layer 28 of the composition Q.sub.x Sb.sub.y Te.sub.z, wherein Q=In, Ga; X=34-44 at. %; y=51-62 at. %; Z=2-9 at. %; is exposed to a pulsated laser light spot 29 (FIG. ) in which amorphous information bits are formed which are read by means of weak laser light 30 and which can be erased in real time during one revolution of the element 23 by means of a laser light erasing spot 33 (FIG. 4) and be returned to the crystalline state.Type: GrantFiled: May 4, 1987Date of Patent: March 28, 1989Assignee: U.S. Philips CorporationInventors: Dirk J. Gravesteijn, Carolus J. Van Der Poel
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Patent number: 4816374Abstract: An opacifier substance is added to a plastic material which is naturally transparent to laser radiation. The opacifier substance is added in powder form as a concentration of 2% to 6% by weight of the plastic material. The opacifier substance is preferably antimony oxide and the resulting plastic material is capable of being permanently marked by a laser beam and is suitable for providing animal ear tags. These tags may be marked with an automatically readable bar code and this code continues to be automatically readable over a period of several years use on the animal.Type: GrantFiled: April 9, 1986Date of Patent: March 28, 1989Assignee: Societe d'Applications Plastiques Rhone-Alpes (SAPRA)Inventor: Gilbert Lecomte