Layers Sensitive To Different Spectral Regions Patents (Class 430/503)
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Patent number: 4751174Abstract: A silver halide photographic material is disclosed, comprising a support having provided thereon at least one light-sensitive silver halide emulsion layer and at least one substantially light-insensitive silver halide emulsion layer, wherein the substantially light-insensitive silver halide emulsion layer is present between a layer exhibiting the highest sensitivity among the light-sensitive silver halide emulsion layers and the support. This material is decreased in halation and cross-over light, and is excellent in sharpness.Type: GrantFiled: October 16, 1986Date of Patent: June 14, 1988Assignee: Fuji Photo Film Co., Ltd.Inventor: Ichizo Toya
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Patent number: 4748106Abstract: A color photographic light-sensitive material comprising a support having thereon at least one layer each of a red-sensitive emulsion, a green-sensitive emulsion and a blue-sensitive emulsion, wherein at least 50% of the total projected area of silver halide grains contained in at least one of the emulsion layers is tabular grains of silver bromide, silver iodobromide, silver chlorobromide or silver iodochlorobromide which has a thickness of less than 0.12 micron, a diameter of less than 0.6 micron and a mean aspect ratio of at least 5. The color photographic light-sensitive material has an improved sharpness.Type: GrantFiled: July 17, 1986Date of Patent: May 31, 1988Assignee: Fuji Photo Film Co., Ltd.Inventor: Yasuhiro Hayashi
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Patent number: 4745048Abstract: A quick desilvering process of silver halide color photographic materials is provided, wherein the total amount of coated silver is 5.2 g/m.sup.2 or less, an average iodide content in the whole light-sensitive silver halide grains is 5.5 mol % or less; and a 2-equivalent magenta polymer coupler is included as a magenta coupler, and bleach-fixing treatment, or bleaching treatment at a pH of 5.5 or less, or desilvering treatment in the presence of a specific desilvering accelerator is carried out. Silver halide color photographic materials which permit the quick desilvering are also provided. These contain a specific desilvering accelerator.Type: GrantFiled: June 5, 1986Date of Patent: May 17, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinzo Kishimoto, Kei Sakanoue, Noboru Sasaki
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Patent number: 4705745Abstract: A radiation-sensitive element for half tone color proofing adapted to be exposed by scanning with four independently modulated sources of radiation emitting at different wavelengths within the range 550 to 900 nm, the element comprising a substrate bearing at least four separate imaging media coated thereon, said imaging media including:(1) an imaging medium capable of forming a yellow image upon imagewise exposure and processing,(2) an imaging medium capable of forming a magenta image upon imagewise exposure and processing,(3) an imaging medium capable of forming a cyan image upon imagewise exposure and processing, and(4) an imaging medium capable of forming a black or a balancing black image upon imagewise exposure and processing,each imaging medium having a maximum spectral sensitivity at a wavelength different from that of the maximum sensitivity of the other imaging media such that after exposure and processing super-imposed yellow, magenta, cyan and black or balancing black images are formed, each imageType: GrantFiled: March 3, 1986Date of Patent: November 10, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jonathan P. Kitchin, Stephen R. Powers, Keith A. Penfound, Peter J. Finn, Michael G. Fisher
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Patent number: 4701404Abstract: A silver halide color photographic material having blue-, green- and red-sensitive silver halide emulsion layers coated on a support is provided, each of said layers being composed of a plurality of sub-layers having different sensitivities. In said material, at least a red-sensitive silver halide emulsion sub-layer having high sensitivity is provided between a first green-sensitive silver halide emulsion sub-layer of high sensitivity and a second green-sensitive silver halide emulsion sub-layer having a lower sensitivity than said first green-sensitive sub-layer, said first green-sensitive sub-layer and/or said red-sensitive sub-layer with high sensitivity giving a maximum color density of formed dye in said material higher than 0.6 but not exceeding 1.3.Type: GrantFiled: September 13, 1985Date of Patent: October 20, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Yoshitaka Yamada, Kenji Kumashiro, Takashi Kamio, Shinya Shimura
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Patent number: 4680253Abstract: A silver halide color photographic material which comprises a support having coated thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer, characterized in that the gradation of each of the blue-, green- and red-sensitive layers satisfies the following relation: ##EQU1## wherein .gamma..sub.B (10.sup.-4), .gamma..sub.G (10.sup.-4) and .gamma..sub.R (10.sup.-4) represent gradation of the blue-, green- and red- sensitive layers upon 1/10,000 second exposure, respectively and .gamma..sub.B (10.sup.-2), .gamma..sub.G (10.sup.-2) and .gamma..sub.R (10.sup.-2) represent those upon 1/100 second exposure, respectively, which provides a color picture having good color and tone reproduction in both regular and flash photography.Type: GrantFiled: February 25, 1986Date of Patent: July 14, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshihiko Shibahara, Hideto Ikoma
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Patent number: 4666818Abstract: A method for patterning a photoresist or insulating layer on a printed wiring board utilizes two photoreactive coatings comprising a photoprocessable ultraviolet (UV) sensitive layer overlaid with a thin, unexposed, undeveloped strip base silver film. A white light x-y plotter, preferably employing an octagonal aperture, is driven directly from a CAD system to expose the film on the board in the desired pattern without affecting the underlying UV sensitive layer. The film is then developed on the board and employed as an in situ mask for the underlying UV layer during exposure of the board to a UV flood lamp. After UV exposure the film is peeled off to allow conventional processing of the selectively polymerized layer. This technique produces high resolution, inspectable onboard masks in full registration using reliable low energy plotters.Type: GrantFiled: June 10, 1985Date of Patent: May 19, 1987Assignee: The Foxboro CompanyInventors: Harold Lake, Paul E. Grandmont
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Patent number: 4663271Abstract: A color photographic light-sensitive material comprising a support having provided thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer is disclosed. The green-sensitive silver halide emulsion layer has a spectral sensitivity distribution whose wave-averaged wavelength of sensitivity ranges from 520 nm to 580 nm and the material further contains at least one silver halide emulsion layer which is light-responsive opposite to other layers and forms an image having substantially the same hue as that of the red-sensitive silver halide emulsion layer and whose spectral sensitivity distribution has a wave-averaged wavelength of sensitivity ranging from 500 nm to 560 nm. The material is excellent in both saturation of red and distinction of green colors.Type: GrantFiled: March 4, 1986Date of Patent: May 5, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Nozawa, Noboru Sasaki
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Patent number: 4656122Abstract: Silver halide photographic elements are disclosed capable of producing reversal images including at least one emulsion layer comprised of a blend of tabular silver haloiodide grains and relatively fine grains consisting essentially of a silver salt more soluble than silver iodide.Type: GrantFiled: January 27, 1986Date of Patent: April 7, 1987Assignee: Eastman Kodak CompanyInventors: Allan F. Sowinski, David C. Shuman
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Patent number: 4647527Abstract: A silver halide color photographic light-sensitive material is described, which is of ultra-high-sensitivity and is characterized by having the following light-sensitive layer unit (I), (II) or (III):Unit (I): a light-sensitive layer unit comprising: (a) a blue- and green-sensitive layer containing (a-1) a yellow image-forming coupler, (a-2) a magenta image-forming coupler, and (a-3) a cyan colored coupler; and (b) a green- and red-sensitive layer containing (b-1) a cyan image-forming coupler, (b-2) a magenta image-forming coupler, and (b-3) a yellow colored coupler.Unit (II): a light-sensitive layer unit comprising: (a) a blue- and red-sensitive layer containing (a-1) a yellow image-forming coupler, (a-2) a cyan image-forming coupler, and (a-3) a magenta colored coupler; and (b) a green- and red-sensitive layer containing (b-1) a magenta image-forming coupler, (b-2) a cyan image-forming coupler, and (b-3) a yellow colored coupler.Type: GrantFiled: May 22, 1984Date of Patent: March 3, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinpei Ikenoue, Akikazu Mikawa, Seiji Ichijima
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Patent number: 4645735Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support base having positioned thereon a light-sensitive silver halide emulsion layer, a light-insensitive layer and ultraviolet ray absorbing polymer latex of a polymer having a repeating unit derived from a monomer represented by the general formula (I): ##STR1## within general formula (I) the substituents are defined within the specification. The Q represents an ultraviolet ray absorbing group represented by a general formula (II) or (III): ##STR2## The substituents within the general formulae given above are defined in the specification. By including the particular ultraviolet ray absorbing polymer latex of the invention the resulting photographic material has improved antistatic properties and the photographic characteristics of the material are not deteriorated by the presence of the latex.Type: GrantFiled: March 13, 1985Date of Patent: February 24, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Naohiko Sugimoto, Tetsuro Kojima, Shingo Ishimaru
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Patent number: 4631111Abstract: Process for preparation of conductive circuit utilizing two photohardenable layers on substrate which may contain a conductive circuit, the upper photohardenable layer becoming hardenable and nontacky when exposed to short wavelengths of radiation (ultraviolet) the lower photohardenable layer being tacky and sensitive to long wavelength radiation (visible light). The photohardenable layers are imagewise exposed through a dichromic phototool (black/yellow also having clear areas) and the unhardened image areas are solvent developed revealing tacky areas. The tacky areas are treated with metal or alloy particles or plating catalyst material, and the metallized or catalyzed image is electrolessly plated. Multilayer conductive circuits can be prepared.Type: GrantFiled: November 27, 1984Date of Patent: December 23, 1986Assignee: E. I. Du Pont de Nemours and CompanyInventor: David W. Williston
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Patent number: 4626498Abstract: A color reversal photographic light-sensitive material is described having at least one light-sensitive silver halide emulsion layer, wherein at least one of said emulsion layer and a layer adjacent thereto contains a silver halide emulsion of silver halide grains containing internal fog centers.Type: GrantFiled: May 21, 1984Date of Patent: December 2, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Sadanobu Shuto, Yasuhiro Hayashi, Munehisa Fujita, Kazunori Hasebe
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Patent number: 4607004Abstract: A silver halide color photographic light-sensitive material is disclosed, comprising a support having provided thereon light-sensitive silver halide emulsion layers, wherein on the outside of the light-sensitive silver halide emulsion layer positioned farthest from the support, a layer containing silver halide fine grains of about 0.2.mu. or less in average grain size is provided, and in the silver halide color photographic light-sensitive material at least one compound represented by the following general formula (I) is present: ##STR1## wherein M represents a hydrogen atom, an alkali metal or a quaternary ammonium group, X represents COOM' or SO.sub.3 M' (wherein M' represents a hydrogen atom, an alkali metal or a quaternary ammonium group), n represents 1 or 2, R.sub.1 represents a group capable of substituting on the phenyl group, and m represents 0, 1 or 2.Type: GrantFiled: December 17, 1984Date of Patent: August 19, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinpei Ikenoue, Haruhiko Iwano, Hiroyuki Mifune, Morio Yagihara
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Patent number: 4596764Abstract: A method of processing an image-wise exposed silver halide color photographic material is described, having on a support at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, the total amount of silver iodide contained in the light-senstive silver halides in said light-sensitive silver halide emulsion layers being higher than 4.0.times.10.sup.-3 mole/m.sup.2, which comprises processing the color photographic material further containing in a protective layer thereof a super fine grain silver halide, having a mean grain size of less than 0.2 .mu.Type: GrantFiled: July 3, 1985Date of Patent: June 24, 1986Assignee: Fuji Photo Film Co., Ltd.Inventor: Shingo Ishimaru
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Patent number: 4582778Abstract: A two layer photopolymer film pack is provided for producing a sequence of an intermediate and a final image on a substrate surface adjacent the film pack upon two successive cycles of exposure through a photo image pattern and development to remove soluble photopolymer. The two layers are of different photopolymers, which have differing solubility characteristics providing for both layers to be removed together by a first developing solution and only one layer to be removed by a different developing solution. This permits the process of this invention namely the successive exposure of a multi-layer photopolymer film to two different photo image patterns to develop intermediate and final hard photopolymer patterns for such methods as photomasking a printed wiring board by use of the intermediate step and producing high resolution printed wire traces in the final step covered by the photopolymer as an insulating solder mask layer.Type: GrantFiled: October 25, 1983Date of Patent: April 15, 1986Inventor: Donald F. Sullivan
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Patent number: 4543319Abstract: A method is provided for providing a polystyrene-tetrathiafulvalene (PSTTF)/deep-ultraviolet hydrid system which combines the advantages of E-beam or X-ray lithography systems with those of deep-UV conformable printing to produce low bias, high aspect ratio resist images over the topography of microelectronic devices.Type: GrantFiled: January 15, 1985Date of Patent: September 24, 1985Assignee: International Business Machines CorporationInventors: Vivian W. Chao, Frank B. Kaufman, Steven R. Kramer, Burn J. Lin
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Patent number: 4543323Abstract: There is disclosed a light-sensitive silver halide photographic material having at least one light-sensitive layer constituted of a plural number of silver halide emulsions provided on a support, and a non-light-sensitive intermediate layer containing a diffusion resistant coupler capable of forming a migratable color forming dye or a compound capable of forming a flow-out type coupling product provided at least adjacent to the silver halide emulsion layer with the highest light sensitivity among the plural number of silver halide emulsion layers on its support side.The light-sensitive material according to this invention exhibits excellent photographic characteristics such as sensitivity, graininess, sharpness, storability and gradation.Type: GrantFiled: December 12, 1983Date of Patent: September 24, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Satoshi Nakagawa, Hiroshi Menjo
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Patent number: 4543308Abstract: For electronic image recording in one or more colors a photographic recording material comprising in at least one layer photo-sensitive silver halide and a compound capable of luminescence is image-wise exposed and developed to produce a latent luminescence image. The image information contained in the latent luminescence image is scanned photoselectively by a luminescence spectroscopic process and is recoded electronically in the form of monochromatic luminescence signals. The process provides images in one or more colors and is highly sensitive. Recording materials of extremely low silver application can be used.Type: GrantFiled: April 22, 1983Date of Patent: September 24, 1985Assignee: Agfa-Gevaert AktiengesellschaftInventors: Hans-Joachim Schumann, Hans hlschlager, Helmut Kampfer
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Patent number: 4535053Abstract: Spin castable polymethylmethacrylate photoresist compositions are provided utilizing certain cinnamic acid derivatives as dyes capable of absorbing light at about 436 nm and substantially transparent to light at about 220-250 nm. The spin castable polymethylmethacrylate resist compositions are used in making semiconductor devices by multilayer photoresist methods.Type: GrantFiled: June 11, 1984Date of Patent: August 13, 1985Assignee: General Electric CompanyInventors: Paul R. West, Bruce F. Griffing
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Patent number: 4526862Abstract: Film packages for obtaining x-ray energy-difference images simultaneously by exposing a body to a broad energy spectrum x-ray beam. One package embodiment has two radiographic films joined at at least two edges to form a pocket in which a light-opaque sheet is inserted during the x-ray exposure. The package is disposed between front and rear x-ray intensifying screens during the exposure. The front screen on which the broad energy image is incident is excited to luminescence predominantly by x-ray photons in one energy band and the rear screen by photons in another band to thereby produce the difference images. The opaque sheet may contain x-ray filter material. A reflective sheet is substituted in the pocket for said opaque sheet during readout of the intensities of corresponding picture elements. Another film package embodiment is laminated and unitary and has a double-sided reflective sheet in the middle, a light-opaque coating on each reflective surface and a photosensitive emulsion on each coating.Type: GrantFiled: October 13, 1983Date of Patent: July 2, 1985Assignee: General Electric CompanyInventor: Norbert J. Pelc
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Patent number: 4521507Abstract: There is provided a multi-layer light-sensitive silver halide color photographic material having plural silver halide emulsion layers having respective sensitivities to light at different spectral regions on a support, wherein at least 80% of the total number of silver halide grains contained in at least one of the light-sensitive silver halide emulsion layers having sensitivities to different spectral regions, comprise silver halide grains having grain sizes greater than 0.8 .mu. and silver halide grains smaller than 0.65 .mu..The multi-layer silver halide color photographic material according to this invention exhibits improved sharpness of the color images formed.Type: GrantFiled: December 27, 1982Date of Patent: June 4, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Kiyoshi Yamashita
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Patent number: 4513078Abstract: X-ray energy-difference images are obtained simultaneously by exposing a body to a broad energy spectrum X-ray beam while a radiographic film package is disposed between front and rear X-ray intensifying screens. The film package has two superimposed films with a light-opaque sheet between them. The front screen, on which the polyenergetic image beam emerging from the body is incident, is excited to luminescence by X-ray photons predominantly in one energy band and the rear screen is excited predominantly by photons in another band. The light opaque sheet preferably contains X-ray filter material for additional filtering of photons to increase the fraction of photons at said other band to which the rear screen is sensitive. A shadowgraph of a marker is formed on the film emulsions during X-ray exposure to aid in matching congruent picture elements on each film when the developed films are being read out to obtain signals corresponding to their intensities.Type: GrantFiled: October 13, 1983Date of Patent: April 23, 1985Assignee: General Electric CompanyInventors: John M. Sandrik, Norbert J. Pelc
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Patent number: 4511648Abstract: This invention presents a light-sensitive silver halide color photographic material having at least two silver halide emulsion layers having sensitivities in different spectral regions on the same side of a support, at least one layer of the layers comprising at least two silver halide emulsion layers with different sensitivities, in which each of the at least two silver halide emulsion layers with different sensitivities contains at least one kind of substantially monodispersed silver halide crystals and at least one silver halide emulsion layer of the layers comprises substantially silver iodobromide containing 4 mole % or more of silver iodide, and further the iodine content in the emulsion layer having the highest sensitivity is higher than that of the emulsion layer having a sensitivity second to the highest.Type: GrantFiled: February 24, 1983Date of Patent: April 16, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kiyoshi Yamashita, Toshifumi Iijima
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Patent number: 4504570Abstract: High aspect ratio tabular grain direct reversal silver halide emulsions are disclosed. The emulsions can be incorporated in photographic elements, such as multicolor photographic elements. Image transfer film units incorporating these direct reversal emulsions are specifically disclosed.Type: GrantFiled: December 23, 1983Date of Patent: March 12, 1985Assignee: Eastman Kodak CompanyInventors: Francis J. Evans, Richard L. Daubendiek, Ronald G. Raleigh
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Patent number: 4493889Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support having thereon a red-sensitive silver halide photographic emulsion layer comprising a tetramethine melocyanine dye represented by the general formula (I) and a compound represented by the general formula (II) ##STR1## the substituents within these structural formulae are defined within the specification. The material gives improved results with respect to preventing diffuse sensitization. The material also provides a red-sensitive silver halide photographic emulsion in which a decline of spectro-sensitivity in the lapse of dissolution is relatively small and which has a small amount of dye fog.Type: GrantFiled: January 23, 1984Date of Patent: January 15, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Yuji Mihara, Satoshi Nagaoka, Masaki Okazaki
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Patent number: 4490458Abstract: Multicolor photographic elements are disclosed each containing superimposed emulsion layers for separately recording blue and minus blue light including at least one emulsion layer comprised of a dispersing medium and silver halide grains, wherein at least 50 percent of the total projected area of the silver halide grains is provided by thin tabular silver iodide grains having a thickness of less than 0.3 micron and an average aspect ratio of greater than 8:1. The multicolor photographic elements show advantages in the minus blue recording emulsion layers directly attributable to the thin tabular silver iodide grains.Type: GrantFiled: October 19, 1983Date of Patent: December 25, 1984Assignee: Eastman Kodak CompanyInventor: Gary L. House
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Patent number: 4478930Abstract: A presensitized lithographic printing plate, which comprises a support having a hydrophilic surface. A non-silver light-sensitive layer capable of having formed therein a lipophilic image pattern and a direct positive light-sensitive silver halide emulsion layer are provided on the support in that sequence. The non-silver light-sensitive layer is provided with an adjacent hydrophilic colloid layer in which a resin is dispersed in fine particle form. The resin is a copolymer comprising (A) a recurring unit derived from at least one monomer of acrylic acid and methacrylic acid, and (B) a recurring unit derived from at least one monomer of an aralkyl acrylate and an aralkyl methacrylate.Type: GrantFiled: November 4, 1982Date of Patent: October 23, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Sho Nakao, Shigeo Koizumi
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Patent number: 4477564Abstract: Silver halide grains with high sensitivity are provided with iodobromide grains having at least 12% nominal iodide molar content, the grains including at least three different iodobromide phases having different iodide contents, the most external phase having an iodide content lower than the nominal iodide content.Type: GrantFiled: April 1, 1982Date of Patent: October 16, 1984Assignee: Minnesota Mining and Manufacturing CompanyInventors: Luigi Cellone, Marco Loiacono
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Patent number: 4469779Abstract: Infrared color film is constructed with a particular arrangement of dye sensitized layers so that the film may respond to the entire visible spectrum, including the blue visible band, as well as the infrared band by choosing the appropriate camera lens filter.Type: GrantFiled: March 16, 1983Date of Patent: September 4, 1984Assignee: Environmental Research Institute of MichiganInventor: Gwynn H. Suits
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Patent number: 4461826Abstract: There is disclosed a silver halide light-sensitive color photographic material which comprises a support and coated thereon a light-sensitive layer containing a compound which, upon reaction with an oxidized color developing agent, is capable of releasing a diffusible development inhibitor and a negative type light-sensitive silver halide emulsion containing light-sensitive silver halide crystals essentially consisting of mono-dispersed silver halide crystals of which size distribution satisfies the following relation:S/r.ltoreq.0.15whereinS=.sqroot..SIGMA.(r-r.sub.i).sup.2 n.sub.i.sup.2 /.SIGMA.n.sub.i andr=.SIGMA.n.sub.i r.sub.i /.SIGMA.n.sub.i in which r.sub.i represents the crystal size of individual silver halide crystals and n.sub.i represents the number of crystals.The light-sensitive color photographic material of the present invention provides an image of remarkably improved sharpness.Type: GrantFiled: July 12, 1982Date of Patent: July 24, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kiyoshi Yamashita, Toshifumi Iijima
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Patent number: 4446226Abstract: A light-sensitive color photographic material having a support and, coated thereon, at least two light-sensitive silver halide emulsion layers respectively sensitive to lights of different spectral regions, characterized in that each of the light-sensitive emulsion layers comprises at least two emulsion layers having different light-sensitivities and containing negative type light-sensitive silver halide crystals essentially consisting of silver iodobromide containing silver iodide at a proportion not higher than 4 mole %.This invention provides a silver halide color photographic material, in which the proportion of the silver halide utilized for the information of a color image to the total silver halide used is enhanced remarkably.Type: GrantFiled: July 12, 1982Date of Patent: May 1, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kiyoshi Yamashita, Toshifumi Iijima
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Patent number: 4444865Abstract: Blended emulsions for use in forming a direct-positive image are disclosed. The emulsions are comprised of a first, radiation-sensitive core-shell grain population having a relatively low coefficient of variation and a second, substantially smaller size grain population capable of internally trapping photolytically generated electrons. Photographic elements incorporating the blended emulsions exhibit improved covering power and can exhibit enhanced speed.Type: GrantFiled: September 15, 1982Date of Patent: April 24, 1984Assignee: Eastman Kodak CompanyInventors: Robert A. Silverman, Harry A. Hoyen
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Patent number: 4439520Abstract: High aspect ratio chemically and spectrally sensitized tabular grain silver halide emulsions, photographic elements incorporating these emulsions, and processes for the use of the photographic elements are disclosed. In the tabular grain emulsions the silver halide grains having a thickness of less than 0.3 micron and a diameter of at least 0.6 micron have a high aspect ratio and account for at least 50 percent of the total projected area of the silver halide grains present.Type: GrantFiled: September 30, 1982Date of Patent: March 27, 1984Assignee: Eastman Kodak CompanyInventors: James T. Kofron, Robert E. Booms, Cynthia G. Jones, John A. Haefner, Herbert S. Wilgus, Francis J. Evans
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Radiation-sensitive silver bromoiodide emulsions, photographic elements, and processes for their use
Patent number: 4433048Abstract: Radiation-sensitive emulsions are disclosed comprised of a dispersing medium and silver bromoiodide grains. These emulsions contains tabular silver bromoiodide grains having a lower proportion of iodide in a central region than in a laterally displaced region, a thickness of less than 0.3 micron, and a diameter of at least 0.6 micron. These tubular grains exhibit an average aspect ratio of greater than 8:1 and account for at least 50 percent of the total projected area of the silver bromoiodide grains.Type: GrantFiled: September 30, 1982Date of Patent: February 21, 1984Assignee: Eastman Kodak CompanyInventors: John C. Solberg, Roger H. Piggin, Herbert S. Wilgus -
Patent number: 4409321Abstract: A method for reproducing a color image. A dye image is formed on a photographic light-sensitive material by imagewisely exposing the material and processing to form a dye image. Through the imaged photographic light-sensitive material, an exposure is made on a photographic printing light-sensitive material which is processed in an alkaline activator solution to form a dye image thereon. The photographic light-sensitive material contains a transparent support provided thereon with red-sensitive, green-sensitive, and blue-sensitive silver halide emulsion layers. The layers each contain one of three different nondiffusible couplers capable of forming, by coupling, compounds having spectral absorption maximum wavelength in the wavelength region longer than 340 nm. The spectral absorption maximum wavelength of the compounds differ by at least 30 nm.Type: GrantFiled: January 22, 1982Date of Patent: October 11, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kaoru Onodera, Toshifumi Iijima, Wataru Fujimastu
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Patent number: 4395478Abstract: A radiation-sensitive emulsion for use in forming a direct-positive image is disclosed. The emulsion is comprised of core-shell silver halide grains. The shell portions of the grains contain polyvalent metal ions to reduce rereversal.Type: GrantFiled: November 12, 1981Date of Patent: July 26, 1983Assignee: Eastman Kodak CompanyInventor: Harry A. Hoyen
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Patent number: 4373018Abstract: High-resolution patterning of a device surface is effected by a method which involves the use of a multi-layer resist structure. An organic resist layer is on the surface to be patterned, and an inorganic resist layer is on the organic resist layer. A pattern is produced in the inorganic layer by exposure to actinic radiation and, after development of the inorganic layer, the pattern is replicated in the organic layer by additional exposure to actinic radiation. The pattern is then developed in the organic layer so as to leave exposed surface portions to be affected by a fabrication agent.Type: GrantFiled: June 5, 1981Date of Patent: February 8, 1983Assignee: Bell Telephone Laboratories, IncorporatedInventors: Elsa Reichmanis, Bernard J. Roman, King L. Tai, Cletus W. Wilkins, Jr.
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Patent number: 4362809Abstract: An improved photoetch technique is presented of the portable-conformable-mask type wherein a thin top layer of resist and a thick planarizing layer are deposited on a substrate and the thin layer is exposed and developed to produce a portable-conformable-mask. The improvement involves dissolving a suitable dye in a layer between the thin top layer and the substrate. The dye is preferably selected to absorb light of the wavelengths used to expose the top layer but does not interfere with processing of the other layers.Type: GrantFiled: March 30, 1981Date of Patent: December 7, 1982Assignee: Hewlett-Packard CompanyInventors: Mung Chen, William R. Trutna, Jr., Michael P. C. Watts, Keith G. Bartlett, Gary Hillis
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Patent number: 4345017Abstract: The present invention is concerned with photographic products and processes employing certain pH-sensitive xanthene compounds as light-screening dyes, which compounds may be represented by the formulae ##STR1## wherein A and A', the same or different, are selected from ##STR2## each R is hydrogen or an electron-withdrawing group; each R.sup.1 is hydrogen or alkyl; each R.sup.2 is hydrogen, alkyl or an electron-withdrawing group; R.sup.3 is hydrogen or alkyl; R.sup.4 is alkyl; and n is 0 or 1 and which compounds in their colored, i.e., ring-opened form may be represented by the formulae ##STR3## wherein A, A', R.sup.3, R.sup.4 and n have the same meaning given above and Z is an anion.Type: GrantFiled: October 6, 1980Date of Patent: August 17, 1982Assignee: Polaroid CorporationInventors: Richard L. Cournoyer, James W. Foley
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Patent number: 4341856Abstract: A photosensitive lithographic printing plate precursor comprising a support having a hydrophilic surface and having thereon a non-silver photosensitive layer capable of forming a water-insoluble oleophilic image and a hardened gelatino silver halide photosensitive emulsion layer on the non-silver photosensitive layer.Type: GrantFiled: February 23, 1981Date of Patent: July 27, 1982Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Toyama, Sho Nakao, Keisuke Shiba, Hidefumi Sera, Masasi Ogawa
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Patent number: 4323646Abstract: A photographic material containing protein as binding agent is hardened with a compound which contains at least two free vinyl sulfonyl groups in the molecule and which is a bisulfite addition product of a compound containing up to 6 vinyl sulfonyl groups.Type: GrantFiled: October 27, 1980Date of Patent: April 6, 1982Assignee: AGFA-Gevaert AktiengesellschaftInventors: Peter Bergthaller, Wolfgang Himmelmann, Johannes Sobel
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Patent number: 4320193Abstract: A color photographic element having special chromatic effects is disclosed, the element comprising a support and three emulsion layers. Special chromatic effects are obtained by particular combinations of the sensitizers and couplers contained in the emulsion layers, the combinations being different from conventional.Type: GrantFiled: May 21, 1980Date of Patent: March 16, 1982Assignee: Bristol-Myers CompanyInventor: Jean J. Robillard
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Patent number: 4310612Abstract: Photographically useful compounds such as photographic reagents and photographic dyes are blocked with a grouping which, under alkaline conditions, is cleaved from the compound by an intramolecular nucleophilic displacement reaction. The compounds are resistant to unblocking under storage conditions, but are uniformly unblocked under conditions encountered during photographic processing.Type: GrantFiled: October 10, 1978Date of Patent: January 12, 1982Assignee: Eastman Kodak CompanyInventors: Jared B. Mooberry, William C. Archie, Jr.
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Patent number: 4297431Abstract: A diffusion control layer comprising a polymerization product of a monomer capable of undergoing .beta.-elimination in an alkaline environment is disclosed for use in diffusion transfer film units, as an interlayer or overcoat in photosensitive elements, or as a timing layer or overcoat in image-receiving elements.Type: GrantFiled: March 14, 1980Date of Patent: October 27, 1981Assignee: Polaroid CorporationInventor: Charles I. Sullivan
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Patent number: 4269927Abstract: This disclosure relates to high chloride silver halide emulsions and photographic elements containing silver halide grains which are internally doped with cadmium, lead, zinc or mixtures thereof in concentrations up to 7.times.10.sup.-5 mole/mole of silver halide.Type: GrantFiled: July 16, 1980Date of Patent: May 26, 1981Assignee: Eastman Kodak CompanyInventor: Robert E. Atwell
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Patent number: 4268609Abstract: A process for preparing a photosensitive lithographic printing plate precursor wherein a layer containing a water-insoluble lipophilic resin is disposed on a support having a hydrophilic surface, the coating of a silver halide emulsion is directly applied to said layer and dried, said coating of silver halide emulsion is dried with hot air at 60.degree. to 150.degree. C. without permitting the same to set.Type: GrantFiled: July 16, 1980Date of Patent: May 19, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Tadao Toyama, Sho Nakao
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Patent number: 4262087Abstract: 2-equivalent 5-pyrazolone magenta couplers having a 1,2,4-triazole with a halogen in the 3-position and a hydrogen in the 5-position thereof are particularly useful in color photographic emulsions.Type: GrantFiled: February 5, 1979Date of Patent: April 14, 1981Assignee: Minnesota Mining and Manufacturing CompanyInventor: Andrea Quaglia
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Patent number: 4256825Abstract: A photographic element, comprising a photographic base carrying a light-sensitive photographic silver halide emulsion layer and a photosensitive non-silver halide layer in operative association with said silver halide layer, said non-silver halide layer containing a light-sensitive composition selected from the group consisting of diazotype compositions, vesicular compositions and photosensitive polymers.Type: GrantFiled: June 8, 1979Date of Patent: March 17, 1981Assignee: GAF CorporationInventor: Frank J. Loprest
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Patent number: RE32097Abstract: Blended emulsions for use in forming a direct-positive image are disclosed. The emulsions are comprised of a first, radiation-sensitive core-shell grain population having a relatively low coefficient of variation and a second, substantially smaller size grain population capable of .Iadd.internally forming a latent image by .Iaddend.internally trapping photolytically generated electrons. Photographic elements incorporating the blended emulsions exhibit improved covering power and can exhibit enhanced speed.Type: GrantFiled: July 2, 1984Date of Patent: March 25, 1986Assignee: Eastman Kodak CompanyInventors: Robert A. Silverman, Harry A. Hoyen