Achromatic Image Produced From Chromatic Reproduction Image Patents (Class 430/356)
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Patent number: 8048606Abstract: An imaging method is disclosed. An imaging composition is coated on a work piece followed by applying a sufficient amount of energy from a 3-D imaging system to form an image on the coated work piece. The image may be a logo or marker for alignment of parts.Type: GrantFiled: March 17, 2006Date of Patent: November 1, 2011Assignee: Rohm and Haas Electronic Materials LLCInventors: Robert K. Barr, James T. Fahey, Corey O'Connor, James G. Shelnut
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Patent number: 7887998Abstract: Disclosed is a silver halide photographic light-sensitive material comprising at least one silver halide emulsion layer and at least one hydrophilic colloid layer on a support, wherein silver halide in the silver halide emulsion layer has a silver bromide content of 40 to 90 mol %, and the silver halide emulsion layer is spectrally sensitized with a specific dye.Type: GrantFiled: June 4, 2007Date of Patent: February 15, 2011Assignee: Fujifilm CorporationInventors: Mitsunori Hirano, Kunio Ishigaki
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Patent number: 7270932Abstract: Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be used in methods of marking.Type: GrantFiled: February 6, 2004Date of Patent: September 18, 2007Assignee: Rohm and Haas Electronic Materials LLCInventors: Robert K. Barr, James T. Fahey, Corey O'Connor, James G. Shelnut, John J. Piskorski
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Patent number: 7223519Abstract: Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be applied to a work piece to mark it and removed from the work piece by peeling.Type: GrantFiled: July 13, 2005Date of Patent: May 29, 2007Assignee: Rohm and Haas Electronic Materials LLCInventors: Robert K. Barr, Corey O'Connor
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Patent number: 7144676Abstract: Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be applied to a work piece to mark it and removed from the work piece by peeling.Type: GrantFiled: July 12, 2004Date of Patent: December 5, 2006Assignee: Rohm and Haas Electronic Materials LLCInventors: Robert K. Barr, Corey O'Connor
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Patent number: 7130118Abstract: An enhanced-contrast projection screen and method of controlling such screens are disclosed. An embodiment of a dynamic projection screen includes a passive layer and at least one active layer. The active layer is superimposed on at least a portion of the passive layer and is adapted to selectively toggle between being transparent and being opaque. A method of controlling such a screen includes determining desired dimensions of a reflective region, and activating at least a portion of an active layer superimposed on at least a portion of a passive layer. The active layer is adapted to selectively toggle between being transparent and opaque.Type: GrantFiled: August 6, 2004Date of Patent: October 31, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: Rachel Fillmore Smythe, John A. Devos
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Patent number: 6503670Abstract: A process for restoring the color of faded color negative film, particular for faded color motion pictures. The original faded negative film is used to produce a green enhancement mask and a blue enhancement mask (or a combination green/blue enhancement mask). Standard red, green, and blue separations are also made from the original faded negative. By combining the green and blue enhancement masks with the standard green and blue separations, respectively, (or the combination green/blue enhancement mask with the green separations and blue separations), enhanced green and blue separations are created. The enhanced green separation, the enhanced blue separation, and the red separation are recombined to form the restored color negative or interpositive. Alternately, from the original negative, an enhanced blue mask can be created, and intermediate film stock printed with yellow light passed through the original negative to produce unprocessed intermediate stock can be created.Type: GrantFiled: June 27, 2001Date of Patent: January 7, 2003Assignee: VCE.com, IncInventor: Peter Kuran
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Publication number: 20030003409Abstract: A process for restoring the color of faded color negative film, particular for faded color motion pictures. The original faded negative film is used to produce a green enhancement mask and a blue enhancement mask (or a combination green/blue enhancement mask). Standard red, green, and blue separations are also made from the original faded negative. By combining the green and blue enhancement masks with the standard green and blue separations, respectively, (or the combination green/blue enhancement mask with the green separations and blue separations), enhanced green and blue separations are created. The enhanced green separation, the enhanced blue separation, and the red separation are recombined to form the restored color negative or interpositive. Alternately, from the original negative, an enhanced blue mask can be created, and intermediate film stock printed with yellow light passed through the original negative to produce unprocessed intermediate stock can be created.Type: ApplicationFiled: June 27, 2001Publication date: January 2, 2003Inventor: Peter Kuran
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Patent number: 5728511Abstract: A silver halide photographic material is provided which exhibits nearly equal sensitivities and gamma values with respect to yellow, magenta and cyan to form a black-and-white image of neutral black or sepia tone, even when it is processed with a color developer free from benzyl alcohol.The silver halide photographic material is made up of a substrate and at least one silver halide emulsion layer formed on the substrate. The silver chloride content of silver halide grains constituting the silver halide emulsion layer is 95 mole % or above, the silver halide emulsion is spectrally sensitized by a specific sensitizing dye, and the silver halide emulsion layer contains a yellow coupler, a magenta coupler and a cyan coupler. The image-forming process is characterized by developing the silver halide photographic material with a color developer substantially free from benzyl alcohol.Type: GrantFiled: March 5, 1997Date of Patent: March 17, 1998Assignee: Oriental Photo Industrial Co., Ltd.Inventors: Toshio Hirosawa, Kouji Katsube, Junichi Komiyama, Yoshiro Hayafuchi, Toshiko Nakamura
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Patent number: 5716773Abstract: Blue-black color favored in medical imaging is imparted to black and white photographic emulsions by the addition of a compound of formula I or II: ##STR1## wherein: R.sup.1 and R.sup.2 independently represent one or more carbon atoms necessary to complete a 5, 6 or 7 membered ring;R.sup.3 and R.sup.4 independently represent H, alkyl or aryl groups or together represent the atoms selected from C, N, O and S necessary to complete a 5, 6 or 7 membered cyclic ring but are not both H;R.sup.5 and R.sup.6 independently represent H or alkyl or together represent the atoms selected from C, N, O and S necessary to complete a 5, 6 or 7 membered ring;X represents a bond or a divalent linking group,each Y may be the same or different and is selected from S, Se, O, and NR.sup.7, where R.sup.7 is H or alkyl of up to 5 carbon atoms, andZ is S or Se.Type: GrantFiled: June 10, 1996Date of Patent: February 10, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Robert James Domett Nairne, Julian Mark Wallis, Alexis Sarah Zinn-Warner
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Patent number: 5624792Abstract: The present invention provides a silver halide photographic photosensitive material which has a printability from color negatives and which can be used as a variable contrast printing paper. This silver halide photographic photosensitive material comprises a support and at least one silver halide emulsion layer provided on the support wherein when .gamma. (gamma) values of characteristic curves obtained by exposure through filters having a transmission maximum wavelength at about 430 nm, about 540 nm and about 700 nm are indicated by .gamma..sub.B, .gamma..sub.G and .gamma..sub.R, respectively, the following inequalities 0.3<.gamma..sub.G /.gamma..sub.B <0.7 and 0.3<.gamma..sub.G /.gamma..sub.R <1.0 are satisfied. Furthermore, an exposing method is also provided.Type: GrantFiled: January 11, 1996Date of Patent: April 29, 1997Assignee: Mitsubishi Paper Mills LimitedInventors: Hiroshi Nishinoiri, Masao Okushima
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Patent number: 5536624Abstract: The present invention provides a silver halide photographic photosensitive material which has a printability from color negatives and which can be used as a variable contrast printing paper. This silver halide photographic photosensitive material comprises a support and at least one silver halide emulsion layer provided on the support wherein when .gamma. (gamma) values of characteristic curves obtained by exposure through filters having a transmission maximum wavelength at about 430 nm, about 540 nm and about 700 nm are indicated by .gamma..sub.B, .gamma..sub.G and .gamma..sub.R, respectively, the following inequalities 0.3<.gamma..sub.G /.gamma..sub.B <0.7 and 0.3<.gamma..sub.G /.gamma..sub.R <1.0 are satisfied. Furthermore, an exposing method is also provided.Type: GrantFiled: March 7, 1995Date of Patent: July 16, 1996Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Hiroshi Nishinoiri, Masao Okushima
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Patent number: 5364747Abstract: The invention is accomplished by forming balanced cyan, magenta, and yellow coupler and emulsion mixes. There is at least one layer in which silver halide emulsion has been sensitized to blue light or silver halide emulsion sensitive to green light. Regardless of the color sensitivity of the silver halide layer that contains silver contains a mix of cyan, magenta, and yellow dye-forming couplers. Further, in order to have a black-and-white image that has a lightness such as observed by the human eye in a scene, it is preferred that the ratios of red sensitive emulsion to green sensitive emulsion to blue sensitive emulsion in the photographic element is about 2:3:1.Type: GrantFiled: November 25, 1992Date of Patent: November 15, 1994Assignee: Eastman Kodak CompanyInventors: James L. Edwards, Paul T. Hahm, Joseph E. LaBarca
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Patent number: 5362616Abstract: The invention is accomplished by forming balanced cyan, magenta, and yellow coupler and emulsion mixes. There is at least one layer in which silver halide emulsion has been sensitized to blue light or silver halide emulsion sensitive to green light. Regardless of the color sensitivity of the silver halide layer that contains silver contains a mix of cyan, magenta, and yellow dye-forming couplers. Further, in order to have a black-and-white image that has a lightness such as observed by the human eye in a scene, it is preferred that the ratios of red sensitive emulsion to green sensitive emulsion to blue sensitive emulsion in the photographic element is about 2:3:1.Type: GrantFiled: November 25, 1992Date of Patent: November 8, 1994Assignee: Eastman Kodak CompanyInventors: James L. Edwards, Paul T. Hahm, Mitchell J. Bogdanowicz, Joseph E. LaBarca
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Patent number: 5350651Abstract: A method is disclosed of obtaining from an imagewise exposed photographic element separate records of the imagewise exposure to each of the blue, green and red portions of the spectrum comprising photographically processing an imagewise exposed photographic element comprised of a sequence of superimposed blue, green and red recording silver halide emulsion layer units that produce images of the same hue upon processing (e.g., lacking an incorporated dye-forming coupler). A first interlayer overlies the emulsion layer unit nearest the support for transmitting to it imagewise exposing radiation this emulsion layer unit is intended to record and for absorbing after photographic processing scanning radiation within at least one wavelength region.Type: GrantFiled: July 16, 1993Date of Patent: September 27, 1994Assignee: Eastman Kodak CompanyInventors: Gareth B. Evans, Christopher B. Rider, Michael J. Simons
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Patent number: 5350650Abstract: A method is disclosed of obtaining from an imagewise exposed photographic element separate records of the imagewise exposure to each of the blue, green and red portions of the spectrum comprising photographically processing an imagewise exposed photographic element comprised of a sequence of superimposed blue, green and red recording silver halide emulsion layer units that produce images of the same hue upon processing (e.g., units lacking a dye-forming coupler). A first interlayer unit overlies the emulsion layer unit nearest the support and is capable of transmitting to it imagewise exposing radiation this emulsion layer unit is intended to record. A second interlayer unit underlies the emulsion layer unit farthest from the support and is capable of transmitting to the emulsion layer units lying nearer the support imagewise exposing radiation these emulsion layer units are intended to record.Type: GrantFiled: July 16, 1993Date of Patent: September 27, 1994Assignee: Eastman Kodak CompanyInventors: John Gasper, Gareth B. Evans, Christopher B. Rider, Michael J. Simons
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Patent number: 5350664Abstract: A method is disclosed of obtaining from an imagewise exposed photographic element separate records of the imagewise exposure to each of the blue, green and red portions of the spectrum comprising photographically processing an imagewise exposed photographic element comprised of a sequence of superimposed blue, green and red recording silver halide emulsion layer units at least two of which produce images of the same hue upon processing (e.g., lacking an incorporated dye-forming coupler), and obtaining separate blue, green and red exposure records from the photographic element. The photographic element is additionally comprised of, interposed between the two emulsion layer units, an interlayer unit for transmitting to the emulsion layer unit of the two units which is nearer the support, electromagnetic radiation that this emulsion layer unit is intended to record and capable, after processing, of reflecting electromagnetic radiation within at least one wavelength region.Type: GrantFiled: July 16, 1993Date of Patent: September 27, 1994Assignee: Eastman Kodak CompanyInventor: Michael J. Simons
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Patent number: 5314790Abstract: Monocyclic and polycyclic azoles having the following formula modify the tone of a silver image formed from a fine grain radiation sensitive silver chlorobromide emulsion layer in which the silver chlorobromide grains have a mean equivalent circular diameter of less than 0.3 .mu.m. The azoles have the formula: ##STR1## wherein Z is --N.dbd. or --C(R.sup.5).dbd. where R.sup.5 is hydrogen, --NH.sub.2, aliphatic of 1 to 8 carbon atoms or aromatic of 1 to 8 carbon atoms;R.sup.4 is hydrogen, aliphatic of 1 to 8 carbon atoms or aromatic of 1 to 8 carbon atoms;R.sup.4 and R.sup.5 together complete a 5 or 6 membered heterocyclic nucleus containing 1 to 3 ring nitrogen atoms;L is a divalent aliphatic linking group containing 1 to 8 carbon atoms;T is an aliphatic terminal group containing 1 to 8 carbon atoms;m is 0 or 1;n is an integer of 1 to 4; andp is an integer of 2 to 4.Type: GrantFiled: June 3, 1992Date of Patent: May 24, 1994Assignee: Eastman Kodak CompanyInventors: Stephen A. Hershey, J. Ramon Vargas, Paul A. Burns
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Patent number: 5292627Abstract: Monocyclic and polycyclic azoles having the following formula modify the tone of a silver image formed from a fine grain radiation sensitive silver bromide or silver bromoiodide emulsion layer in which the silver bromide or silver bromoiodide grains have a mean equivalent circular diameter of less than 0.3 .mu.m. The azoles have the formula: ##STR1## wherein Z is --N.dbd. or --C(R.sup.5).dbd. where R.sup.5 is hydrogen, --NH.sub.2, aliphatic of 1 to 8 carbon atoms or aromatic of 1 to 8 carbon atoms;R.sup.4 is hydrogen, aliphatic of 1 to 8 carbon atoms or aromatic of 1 to 8 carbon atoms;R.sup.4 and R.sup.5 together complete a 5 or 6 membered heterocyclic nucleus containing 1 to 3 ring nitrogen atoms;L is a divalent aliphatic linking group containing 1 to 8 carbon atoms;T is an aliphatic terminal group containing 1 to 10 carbon atoms;m is 0 or 1;n is an integer of 1 to 4; andp is an integer of 2 to 4.Type: GrantFiled: June 3, 1992Date of Patent: March 8, 1994Assignee: Eastman Kodak CompanyInventors: Stephen A. Hershey, J. Ramon Vargas, Paul A. Burns
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Patent number: 5154995Abstract: A novel silver halide color photographic material is provided which comprises a support having coated thereon at least three silver halide emulsion layers having maximum spectral sensitivities in at least three sensitive wavelength ranges of 400 nm to 500 nm, 500 nm to 570 nm and 650 nm to 730 nm and is sensitive to said three sensitive wavelength ranges to form yellow, magenta and cyan dye images, respectively, characterized in that said silver halide color photographic material has additionally at least one function to provide a maximum spectral sensitvity in wavelength range other than said three sensitive wavelength ranges and to form any of yellow, magenta or cyan dye image by an exposure to the light of said other range. A color image formation method is also disclosed which comprises exposing said silver halide color photographic material to light in a print exposure process in combination with a scanning exposure process, and then developing said silver halide color photographic material.Type: GrantFiled: June 13, 1990Date of Patent: October 13, 1992Assignee: Fuji Photo Film Co., Ltd.Inventor: Kiyoshi Kawai
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Patent number: 5006449Abstract: A silver halide black and white photographic material for printing a developed transparent color photographic material is disclosed, which comprises a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the emulsion layer is composed of a silver halide emulsion which maintains a spectral sensitivity substantially between 520 nm and 620 nm and contains substantially no iodine.Type: GrantFiled: June 13, 1989Date of Patent: April 9, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Ichizo Toya, Kunioki Ohmura, Masaki Okazaki
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Patent number: 4994345Abstract: A method for making a color proof in a photo-mechanical process. The method comprises a step for exposing a silver halide color photographic light-sensitive material to light through a black-and-white halftone dot image, and a step for developing said silver halide color photographic light-sensitive material with a color developer. The photographic material is comprised of at least three silver halide emulsion layers which are different from each other in spectral sensitivity thereof, and at least one of these silver halide emulsion layers contains a specific yellow coupler and the color developer contains a specific color developing agent. A halftone color image having a color tone similar to that of image printed with printing inks can be obtained by the simplified process.Type: GrantFiled: June 5, 1989Date of Patent: February 19, 1991Assignee: Konica CorporationInventors: Tomomi Yoshizawa, Keiji Ogi, Nariko Kimura
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Patent number: 4943517Abstract: An imaging process which comprises the steps of:(i) providing a first radiation sensitive element comprising a transparent base having coated thereon at least three imaging media each capable of forming a color image upon imagewise exposure and processing, each of said imaging media capable of forming a color image having a maximum sensitivity at a wavelength different from the wavelengths of the maximum sensitivity of the other imaging media capable of forming a color image and the wavelength of the maximum absorption of the color image formed by each imaging medium differing from the wavelength of the maximum absorption of the color image formed by the other imaging media by at least 40 nm;(ii) obtaining color separation information representative of the cyan, magneta and yellow and optionally black content of a color original, or electronically generated image,(iii) exposing said first radiation sensitive element of step (i) to at least three independently modulated sources of radiation, each source beingType: GrantFiled: September 30, 1988Date of Patent: July 24, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Stephen R. Powers, Peter J. Finn, Michael G. Fisher
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Patent number: 4737912Abstract: In a medical image filing apparatus having a store unit, a keyboard, a retrieval device, a display unit and a CPU, case images of various diseases are stored in the store unit together with clinical images, and case indexes corresponding to respective case images and clinical indexes corresponding to respective clinical images are also stored in the store unit. Therefore, the retrieval operation of the case images as well as the clinical images can be effected in an easy and swift manner, and thus it is possible to effect an accurate diagnosis for a patient.Type: GrantFiled: September 3, 1985Date of Patent: April 12, 1988Assignee: Olympus Optical Co., Ltd.Inventor: Kaori Ichikawa
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Patent number: 4728601Abstract: Tetra-aza indene compounds of the formula ##STR1## wherein R.sub.1 is alkyl or a ring system and R.sub.2 and R.sub.3 are hydrogen or alkyl.These compounds are of use as image toners in photographic materials.Type: GrantFiled: April 1, 1986Date of Patent: March 1, 1988Assignee: Ciba-Geigy AGInventors: David Rowland, Michael E. Dale, Geoffrey E. Ficken, William E. Long, Andrew W. Yates
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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: 4678740Abstract: A photographic matte for use in traveling matte photography is formed by recording a separation of a first screen-color separation of an image on a first film layer and recording a separation of a different second color on a second layer. Preferably, the second color is complementary to the screen color. One layer is developed to form a positive image and the other to form a negative image, these images reinforcing each other. One image is formed by black dye, using a coupler and a color developer and the other is formed by a black dye destruct technique in which the developed portion of the silver halide emulsion is removed. According to another aspect of the invention, a matte of increased density can be formed without commensurate image growth by combining a black dye image with a silver image.Type: GrantFiled: April 29, 1985Date of Patent: July 7, 1987Inventor: James N. Catania
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Patent number: 4610949Abstract: Disclosed is a method for the direct making of printing plates for multicolor lithography capable of faithfully reproducing repeatedly continuous gradation multicolor original, which comprises using color separation filters for at least blue, green, and, red and repeating a sequence of the steps of shielding an exposure section against light by a light shielding means; feeding to said exposure section a magazine containing a sensitive material convertible into lithographic printing plate, which material bears a panchromatically sensitized photographic layer; bringing said sensitive material into close contact with a contact screen; exposing said sensitive material through a lens and a color separation filter to the reflected light from a continuous gradation multicolor original; and sending the exposed sensitive material to a processing bath section.Type: GrantFiled: February 1, 1985Date of Patent: September 9, 1986Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Eiji Kanada, Kazunaka Endo, Kyonosuke Yamamoto, Shigeyoshi Suzuki
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Patent number: 4429035Abstract: A black and white photographic material is disclosed. The material contains a black image-forming coupler shown by formula (I) or (II) ##STR1## wherein R represents ##STR2## Y.sub.1 represents a group which prevents the coupler from diffusing away from the layer containing it. Examples of such groups include an aliphatic group, an aryl group, an aralkyl group, or a heterocyclic group. X.sub.1 and X.sub.2 each represents a hydrogen atom or a coupling-off group capable of being released upon oxidative coupling reaction with a developing agent. The material is capable of producing an excellent black image by development after image exposure. In the photographic material, the amount of silver can be effectively reduced and the photographic material give black images even after bleaching the black image formed.Type: GrantFiled: June 20, 1983Date of Patent: January 31, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Eiichi Kato, Nobutaka Ohki, Junkichi Ogawa
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Patent number: 4321321Abstract: An initial step of inspecting a positive color transparency is performed to determine the darkest detail area thereof to be reproduced and is subsequently followed by the superposing of the positive color transparency on a panel of photochromic (light sensitive) glass to form a laminate-type assembly. Thereafter, the assembly has a beam of light directed therethrough from the transparency side thereof. The beam intensity and the duration of illumination is sufficient to cause the more heavily illuminated portions of the glass panel to darken. Thereafter, trial enlarger exposing of a trial color separation negative film sheet through the assembly and a half-tone screen with sufficient light determined to properly expose the area of the trial negative film sheet corresponding to the prior mentioned darkest detail area of the transparency is accomplished.Type: GrantFiled: November 7, 1980Date of Patent: March 23, 1982Inventor: Joseph E. Moore
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Patent number: 4294913Abstract: An original information carrier is disclosed which comprises a recording layer applied to a carrier material. The recording layer contains information in the form of a relief image which is made of relief part-images which border on one another without overlapping. The recording layer further comprises a relief grating of different grating depths superimposed over the areas of said relief part-images.A process for producing an information carrier is disclosed which comprises exposing a recording layer through separate color separation originals, exposing the layer to a grating pattern, and developing the exposed recording layer.A process for forming a matrix containing the information stored on an information carrier is disclosed which comprises forming a layer of material on the original information carrier and then separating the layer from the carrier.Type: GrantFiled: August 7, 1979Date of Patent: October 13, 1981Assignee: Hoechst AktiengesellschaftInventors: Roland Moraw, Renate Schadlich
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Patent number: 4293640Abstract: A process for reducing patient and personnel hazards from exposure to X-radiation during diagnostic procedures, comprising irradiating a photographic emulsion to produce an underexposed radiograph, developing and fixing the radiograph and treating the underexposed processed radiograph in a one-step copper ion image enhancement composition to intensify the image profile to a level at least equivalent to a fully exposed radiograph and subsequently darkening the enhanced image by treatment in a one-step iron ion darkening composition to blacken the image profile. The copper ion image enhancement composition and subsequent iron ion darkening composition produces a darkened or blackened image profile as is found in conventional radiographs and enables a reduction in radiation exposure to patient and personnel up to 50% and more over what is generally regarded as the usual level of radiation for a given diagnostic radiographic examination.Type: GrantFiled: July 21, 1980Date of Patent: October 6, 1981Assignee: Minrad CorporationInventor: Norman L. Weinberg
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Patent number: 4281049Abstract: Disclosed is a color separation transparency of a partial image in one of the primary colors blue, green, yellow or red or in black or white color or in a secondary color, which comprises the partial image in a negative of the color separation transparency being transparent in the particular primary or secondary color, and the areas of the color separation transparency outside the part image being opaque. Also disclosed is a process for preparing the color separation transparencies according to the invention.Type: GrantFiled: June 13, 1979Date of Patent: July 28, 1981Assignee: Hoechst AktiengesellschaftInventor: Roland Moraw
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Patent number: 4241153Abstract: Negative and positive films for use in multi-color printing are prepared by a process which utilizes crystals and interstices therebetween in color-separation negatives for multi-color printing without the use of half-tone screens. Exposure through masks of controlled density ranges relative to the color-separation negatives and positives prepared from the color original result in final negatives and positives as well as duplication negatives and positives which can be utilized in the multi-color printing process.Type: GrantFiled: October 27, 1978Date of Patent: December 23, 1980Assignee: AB Bates a/sInventor: Vjatsjeslev Rovnjev
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Patent number: 4188225Abstract: An improved halftone dot screen for use in reproduction of continuous-tone graphic images is disclosed. The screen comprises a two-dimensional matrix of cells (dots) each cell having a common pattern of transmittance to radiation utilized in the reproduction process. The common pattern of transmittance for each cell is characterized by a finite number of different discrete transmittance level patterns. In a preferred embodiment, these patterns include portions arranged along the respective sides of a parallelogram. In one preferred embodiment, the discrete transmittance level patterns comprise an array of concentric parallelograms. Each parallelogram has a plurality of dot portions arranged along the sides of the parallelogram. The sides of the parallelogram patterns are preferably disposed at a substantial angle to the horizontal to reduce moire and rosette pattern effects and to simplify the reproduction process.Type: GrantFiled: April 10, 1978Date of Patent: February 12, 1980Assignee: Lumin, Inc.Inventor: Hua-Kuang Liu
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Patent number: 4188216Abstract: A method for preparation of the final film used for engraving a flat screen, belt screen or rotary screen for a printing machine. The final film is prepared from a photograph of the image to be reproduced and engraved by known techniques on a screen so as to provide a continuous repetitive pattern on the face of a pile fabric dyed in a continuous print dyeing process.Select areas of photographic images are montaged and put into a repeat pattern within a predetermined outline to establish the basic repeat. Four continuous tone color separations are made of the selected pattern to provide yellow, blue, red and black continuous tone negatives which represent the four colors of the original image. Each color separation is posterized and half toned to provide eight positive films. The films are selectively combined, blown up to the desired repeat size to provide a negative or positive which is used to prepare a flat bed screen or rotary screen for an otherwise conventional printing process.Type: GrantFiled: April 21, 1978Date of Patent: February 12, 1980Assignee: World Carpets, Inc.Inventor: Jon M. Blumenaus