Blocked Developers Patents (Class 430/959)
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Patent number: 7112398Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein: the substituents are as defined in the application.Type: GrantFiled: January 9, 2004Date of Patent: September 26, 2006Assignee: Eastman Kodak CompanyInventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy, Jared B. Mooberry, James J. Seifert, James H. Reynolds, Lyn M. Irving
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Patent number: 7108964Abstract: The invention relates to a novel kind of anthranilic acid compound that releases a UG as a function of chemical bond cleavage according to Formula (I): Q-(AAS)-UG where UG is an useful group and is chemically bonded to (AAS); (AAS) is an anthranilic acid switching group; and Q is a group in which the bond to (AAS) is broken so that the -(AAS)-UG fragment subsequently decomposes to the free UG.Type: GrantFiled: August 5, 2005Date of Patent: September 19, 2006Assignee: Eastman Kodak CompanyInventors: Stephen P. Singer, Philip A. Allway, Trevor J. Wear, Louis E. Friedrich, Siu (Lambert) C. Tsoi, Bernard A. Clark, Paul L. Stanley
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Patent number: 6780575Abstract: The present invention is directed to a method of scanning silver-halide-containing color photographic and photothermographic film. In particular, the present invention comprises record shifting by means by employing at least one infrared dye in a color unit of the film, thereby forming at least one image record in the infrared. This expedient leads to the formation of high quality images, especially when scanning photothermographic elements in which the silver halide, metallic silver, and/or any organic silver salts have not been removed.Type: GrantFiled: March 6, 2002Date of Patent: August 24, 2004Assignee: Eastman Kodak CompanyInventor: Richard P. Szajewski
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Patent number: 6770406Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein PUG is a residue of removing a hydrogen from wherein X, Y, and Z represent substituents selected independently from the groups hydrogen, alkyl group of 1 to 6 carbon atoms, cyclopropyl, aryl, arylalkyl, and heterocyclic groups, wherein at least one of X, Y, and Z is an aryl group and one of X, Y, Z, which may or may not be an aryl group, is attached in the direction of the backbone, and the other substituents are as defined in the specification. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.Type: GrantFiled: January 9, 2003Date of Patent: August 3, 2004Assignee: Eastman Kodak CompanyInventors: James H. Reynolds, Douglas R. Robello, David H. Levy
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Publication number: 20040142255Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: 1Type: ApplicationFiled: January 9, 2004Publication date: July 22, 2004Inventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy, Jared B. Mooberry, James J. Seifert, James H. Reynolds, Lyn M. Irving
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Publication number: 20040137380Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: 1Type: ApplicationFiled: January 9, 2003Publication date: July 15, 2004Applicant: Eastman Kodak CompanyInventors: James H. Reynolds, Douglas R. Robello, David H. Levy
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Patent number: 6699651Abstract: Improved compounds and base precursors that undergo thermal decomposition are disclosed. Thermal-dye-bleach agents, and in particular, a novel class of salts of arylsulfonylacetic acids as bleaching agents for photothermographic use are disclosed. Photothermographic elements employing these thermal-dye-bleach agents are suitable for use as acutance and antihalation systems, bleachable filter dye materials, and in promoting unblocking of various components such as blocked developers, especially in in photothermographic elements.Type: GrantFiled: November 20, 2002Date of Patent: March 2, 2004Assignee: Eastman Kodak CompanyInventors: Ramanuj Goswami, David H. Levy
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Publication number: 20030232272Abstract: Disclosed is a silver halide photographic light-sensitive material comprising at least one silver halide emulsion layer on a support, which contains a compound of which one-electron oxidized derivative produced by one electron oxidation of the compound is capable of releasing two or more electrons with a bond cleavage and has a characteristic curve drawn in orthogonal coordinates of logarithm of light exposure (x-axis) and optical density (y-axis) using equal unit lengths for the both axes, on which gamma is 5.0 or more for the optical density range of 0.3-3.0. This silver halide photographic light-sensitive material shows high contrast and high sensitivity.Type: ApplicationFiled: October 3, 2002Publication date: December 18, 2003Inventors: Shoji Yasuda, Kohzaburoh Yamada
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Patent number: 6645706Abstract: Thermally developable materials include a reducing agent composition that can reduce silver ions and provide high contrast images. The reducing agent composition includes a) a hindered phenol reducing agent, an aromatic di- or tri-hydroxy compound, or mixtures thereof, and b) a thermally-releasable p-phenylenediamine co-developer that is represented by the following Structure I: R—NH-BLOCK (I) wherein R—NH— is a p-phenylenediamine group and BLOCK is a blocking group that is cleaved upon exposure to at least 120° C. for at least 5 seconds and comprises one or more of the following thermally cleavable groups: —CONH—, —COO—, —CONHSO2—, —PO3—, —SO2—, —COCH2NHCO—, or —COS—, and BLOCK is directly linked to R—NH— through one of the thermally cleavable groups.Type: GrantFiled: September 17, 2002Date of Patent: November 11, 2003Assignee: Eastman Kodak CompanyInventors: Sharon M. Simpson, Takuzo Ishida
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Publication number: 20030194638Abstract: Disclosed is a highly sensitive photothermographic material containing on a support a silver salt of an organic acid, a photosensitive silver halide, a reducing agent, a binder and, for example, a compound of which one-electron oxidized derivative produced by one electron oxidation of the compound is capable of releasing two or more electrons with a bond cleavage.Type: ApplicationFiled: October 3, 2002Publication date: October 16, 2003Inventors: Takahiro Goto, Kohzaburoh Yamada, Tomoyuki Ohzeki, Eiichi Okutsu, Shoji Yasuda
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Patent number: 6576414Abstract: The present invention is directed to a photothermographic element comprising silver halide, a blocked developer, a coupler, and core/shell particles, each such particle comprising a mixture of at least two non-photosensitive organic silver salts, which particle comprises a center portion comprising a non-photosensitive first organic silver salt and at least one shell portion covering the center portion, the shell comprising a non-photosensitive second organic silver salt. The organic silver salt in the shell has a lower pKsp relative to the organic silver salt in the core. This invention also provides a composition comprising the core/shell non-photosensitive organic silver salt particles, and a method of making the particles.Type: GrantFiled: November 21, 2001Date of Patent: June 10, 2003Assignee: Eastman Kodak CompanyInventors: Mark E. Irving, David H. Levy, Bernard D. Stich, Mark R. Mis, Stephen Swingley, Donald L. Black
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Patent number: 6551768Abstract: Blocked photographically useful groups decompose thermally via a Lossen rearrangement reaction, including, for example, compounds represented by the following structure: In the above structure, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.Type: GrantFiled: May 25, 2001Date of Patent: April 22, 2003Assignee: Eastman Kodak CompanyInventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
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Publication number: 20030073044Abstract: The present invention is directed to a photothermographic element comprising at least one imaging layer with a pyrrolotriazole coupler and a developing agent, or precursor thereof, the combination of which is capable of forming an image record in the infrared region of the light spectrum in response to a selected hue of visible light. This expedient leads to the formation of high quality images, especially when scanning photothermographic elements in which the silver halide, metallic silver, and/or any organic silver salts have not been removed. Also disclosed is a method for photothermographically forming a developed image comprising an infrared image record.Type: ApplicationFiled: August 13, 2001Publication date: April 17, 2003Inventors: James H. Reynolds, Leif P. Olson, Wojciech K. Slusarek, David H. Levy
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Patent number: 6537712Abstract: This invention relates to a color photothermographic element comprising an imaging layer having associated therewith a compound of Structure I: wherein DEV, LINK, TIME, n, T, t, C*, R12, D, p, X, q, W, and w are defined in the application. Such compounds have good reactivity as developing agents when thermally activated under preselected conditions. The invention is also directed to a method of developing a color photothermographic element, including dry development systems.Type: GrantFiled: November 9, 2000Date of Patent: March 25, 2003Assignee: Eastman Kodak CompanyInventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy, Jared B. Mooberry, James J. Seifert, James H. Reynolds, Lyn M. Irving, Zbyslaw R. Owczarczyk, David K. Southby
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Patent number: 6534252Abstract: A light sensitive silver halide color photographic element having a common chromogenic coupler and a distinct developer associated with each color forming layer unit is disclosed. In a first embodiment, the light sensitive silver halide color photographic element has a red light sensitive silver halide layer unit and a first blocked coupling developer, a green light sensitive silver halide layer unit and a second blocked coupling developer and a blue light sensitive silver halide layer unit having a third blocked coupling developer and wherein each layer unit has the same chromogenic coupler. In a second embodiment, the light sensitive silver halide color photographic element has a red light sensitive silver halide layer unit and a first blocked coupling developer, a green light sensitive silver halide layer unit and a second blocked coupling developer and a blue light sensitive silver halide layer unit having a third blocked coupling developer.Type: GrantFiled: May 31, 2001Date of Patent: March 18, 2003Assignee: Eastman Kodak CompanyInventors: Richard P. Szajewski, Lyn M. Irving
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Patent number: 6534226Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.Type: GrantFiled: November 20, 2000Date of Patent: March 18, 2003Assignee: Eastman Kodak CompanyInventors: Zbyslaw R. Owczarczyk, David T. Southby, Xiqiang Yang
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Patent number: 6531271Abstract: A light-sensitive silver-halide color photographic element comprising at least two different chromogenic couplers including, in reactive association, a multifunctional coupler and a developer precursor that liberates a developing agent enabling cyan color from the multifunctional coupler on development, wherein the multifunctional coupler has the property that it is capable of forming a distinctly colored dye with an oxidized form of the developer 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine. In one embodiment, the multifunctional coupler has the property that it is capable of forming a distinctly colored magenta dye with an oxidized form of the developer 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine. By means of the present invention, light-sensitive color photothermographic elements can form yellow, magenta and cyan dye records of consistent density forming ability and consistent stability in all three color records.Type: GrantFiled: August 16, 2001Date of Patent: March 11, 2003Assignee: Eastman Kodak CompanyInventors: Richard P. Szajewski, Lyn M. Irving
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Patent number: 6528241Abstract: A light-sensitive silver-halide color photographic element comprising a multifunctional coupler enabling formation of an infrared dye on development, wherein the multifunctional coupler has the property that it is capable of forming a distinctly colored cyan dye with an oxidized form of the developer 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine.Type: GrantFiled: August 13, 2001Date of Patent: March 4, 2003Assignee: Eastman Kodak CompanyInventor: Richard P. Szajewski
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Patent number: 6517981Abstract: A light-sensitive silver-halide color photothermographic element comprises a typically magenta dye-forming pyrazolone coupler in the cyan record by rendering the hue of the resultant dye a cyan hue. The use of certain para-phenylenediamine developers, for example, containing a substituent group in both the 2- and 6-positions (ortho, ortho') relative to the coupling nitrogen, along with selected magenta dye-forming couplers, when oxidized, yield cyan dyes with certain couplers, resulting in the superior non-hue characteristics of magenta couplers in the cyan layer. By means of the present invention, light sensitive color photothermographic elements can form image dye records of consistent density forming ability and consistent stability in all three color records. Also disclosed is a method of processing such a color photographic element.Type: GrantFiled: August 16, 2001Date of Patent: February 11, 2003Assignee: Eastman Kodak CompanyInventors: Leif P. Olson, Wojciech K. Slusarek, James H. Reynolds, Richard P. Szajewski
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Patent number: 6506546Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein PUG is a photographically useful group; LINK 1 and LINK 2 are linking groups; TIME is a timing group; T represents t independently selected substituted or unsubstituted alkyl or aryl groups, t is 0, 1, or 2 and if t is 2, the T groups can form a ring; HET is a heterocyclic group which optionally can form a ring with a T group; R12 is hydrogen, substituted or unsubstituted alkyl or substituted or unsubstituted aryl, or R12 can form a ring with a T group or with HET; 1 is 0 or 1; m is 0, 1, or 2; and n is 0 or 1.Type: GrantFiled: December 30, 1999Date of Patent: January 14, 2003Assignee: Eastman Kodak CompanyInventors: Zbyslaw R. Owozarczyk, Xiqiang Yang, David T. Southby
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Patent number: 6506528Abstract: This invention relates to a photothermographic color element containing a mixture of blocked developers in the same emulsion layer, which blocked developers having different onset temperatures. Such a mixture has been found to allow for lower film processing temperatures and/or shorter times of development with respect to the blocked developer having a higher onset temperature. Conversely, improved discrimination can be obtained with respect to the blocked developer having the lower onset temperature.Type: GrantFiled: November 20, 2000Date of Patent: January 14, 2003Assignee: Eastman Kodak CompanyInventors: Zbyslaw R. Owczarczyk, David T. Southby, Xiqiang Yang
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Patent number: 6500590Abstract: The present invention is directed to a method of processing color photographic film that has been imagewise exposed in a camera, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, which method in order comprises: (a) thermally developing the film step without any externally applied developing agent, comprising heating said film to a temperature greater than 80° C.Type: GrantFiled: May 23, 2001Date of Patent: December 31, 2002Assignee: Eastman Kodak CompanyInventors: Mark E. Irving, David T. Southby
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Patent number: 6495299Abstract: This invention relates to packaged photographic film that is capable of being alternately processed, according to individual consumer choice, by either (1) a traditional wet-chemistry process with a developer solution followed by desilvering in one or more subsequent solutions to obtain a color negative film, or (2) a dry thermal process without the use of aqueous solutions in which a blocked developing agent located within the photographic element is thermally activated or unblocked, optionally followed by electronic scanning of the developed film without desilvering. This invention enables a single film stock to be developed in both a conventional deep tank process and in a dry thermal process.Type: GrantFiled: May 25, 2001Date of Patent: December 17, 2002Assignee: Eastman Kodak CompanyInventors: David H. Levy, James H. Reynolds, David T. Southby, Paul D. Zimmerman, Mark E. Irving
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Patent number: 6492076Abstract: This invention relates to a color photothermographic element comprising a support, at least one photothermographic imaging layer, and at least one antihalation layer or filter layer, wherein the antihalation or filer layer comprises an aqueous heat-bleachable composition comprising at least one zwitterionic 1-aminopyridinium dye having a methine linkage terminated by a substituted or unsubstituted heterocyclic nucleus.Type: GrantFiled: August 27, 2001Date of Patent: December 10, 2002Assignee: Eastman Kodak CompanyInventors: Ramanuj Goswami, Mark E. Irving, David H. Levy
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Patent number: 6482582Abstract: Disclosed in an image recording material comprising, on a support, a photosensitive silver halide, a reducing agent, a binder and a compound represented by the following Formula (1): wherein, in Formula (1), R1 and R2 each independently represent a substituent, R1 and R2 may be bonded to each other to form a ring, X represents a halogen atom, L represents a methylene group, m represents an integer of 0-7, Y represents a divalent bridging group, n represents 0 or 1 and Z represents a residue derived from a photographically useful compound. This image recording material exhibits high sensitivity, low fog and good storage stability, and is stable against fluctuation of development conditions.Type: GrantFiled: July 24, 2001Date of Patent: November 19, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Katsuyuki Watanabe, Masaru Takasaki
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Patent number: 6472111Abstract: This invention relates to a photothermographic color element containing a mixture of blocked developers in the same emulsion layers. By having different blocked developers or mixtures of at least two blocked developers in different color layers, it is possible to manipulate the image discrimination (at the processing temperature) in each layer and to balance the density formation or color in the different color layers. Different mixtures of blocked developers can be used in different imaging layers, to balance the Gamma, the Dmin and the Latitude in different imaging layers or color units.Type: GrantFiled: November 20, 2000Date of Patent: October 29, 2002Assignee: Eastmank Kodak CompanyInventors: James H. Reynolds, David H. Levy, David T. Southby
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Patent number: 6455235Abstract: A photographic processing element is disclosed, comprising a color developing agent or its precursor. The element further comprises a base or its precursor. An image forming method is also disclosed, comprising superposing a processing element comprising a color developing agent or its precursor on an exposed silver halide photographic material to perform development of the photographic material to form an image.Type: GrantFiled: December 8, 2000Date of Patent: September 24, 2002Assignee: Konica CorporationInventors: Noriyuki Kokeguchi, Hiromichi Mizukami, Yoshihiko Suda
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Publication number: 20020132175Abstract: The present invention is directed to a method of scanning silver-halide-containing color photographic and photothermographic film. In particular, the present invention comprises record shifting by means by employing at least one infrared dye in a color unit of the film, thereby forming at least one image record in the infrared. This expedient leads to the formation of high quality images, especially when scanning photothermographic elements in which the silver halide, metallic silver, and/or any organic silver salts have not been removed.Type: ApplicationFiled: March 6, 2002Publication date: September 19, 2002Applicant: Eastman Kodak CompanyInventor: Richard P. Szajewski
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Patent number: 6451516Abstract: This invention relates to a photothermographic element comprising a support, at least one photothermographic imaging layer, and at least one antihalation layer or a filter layer, wherein the antihalation or filer layer comprises an aqueous heat-bleachable composition comprising a 1-aminopyridinium filter dye having a methine linkage terminated by a substituted or unsubstituted heterocyclic nucleus of the type contained in cyanine dyes, which filter dye is in the presence of an effective amount of a thermal solvent.Type: GrantFiled: August 27, 2001Date of Patent: September 17, 2002Assignee: Eastman Kodak CompanyInventors: Mark E. Irving, Ramanuj Goswami
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Patent number: 6440618Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application, wherein B is a six-membered heteroaromatic ring. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.Type: GrantFiled: November 13, 2000Date of Patent: August 27, 2002Assignee: Eastman Kodak CompanyInventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
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Publication number: 20020106590Abstract: This invention relates to a photothermographic element comprising a support, at least one photothermographic image-receiving layer, and at least one antihalation layer or a filter layer, wherein the antihalation or filer layer comprises an aqueous heat-bleachable composition comprising at least one dye and at least one hexaarylbiimidazole in the form of particles dispersed in a matrix comprising a hydrophilic or aqueous dispersible polymer.Type: ApplicationFiled: December 6, 2000Publication date: August 8, 2002Inventors: Mark E. Irving, Ramanuj Goswami, Kenneth N. Kilminster
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Patent number: 6426181Abstract: The present invention is directed to the use of a mixture of non-light sensitive organic silver salts in a color photothermographic system comprising a blocked developing agent for color imaging. At least one of the organic silver salts is the sole or primary silver donor during thermal development and at least one other organic silver salt, present at levels in the range of 30,000 to 60,000 mg/mol of silver halide, effectively inhibits fog during thermal development of the photothermographic element. In one embodiment, and the system comprises a mixture of at least two organic silver salts, wherein the first organic silver salts exhibits a cLogP of 0.1 to 10 and a Ksp of 7 to 14 and wherein the second organic silver salt exhibits a cLogP of 0.1 to 10 and a Ksp of 14 to 21.Type: GrantFiled: May 23, 2001Date of Patent: July 30, 2002Assignee: Eastman Kodak CompanyInventors: Lyn M. Irving, David H. Levy, Mark E. Irving
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Publication number: 20020025498Abstract: A color photothermographic element comprising at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, and a blocked developer in the presence of a thermal solvent represented by the following structure: 1Type: ApplicationFiled: May 16, 2001Publication date: February 28, 2002Inventors: Xiqiang Yang, Zbyslaw R. Owczarczyk, David T. Southby, Mark E. Irving, Paul B. Merkel, Lyn M. Irving, David H. Levy
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Patent number: 6350566Abstract: This invention relates to packaged photographic film that is capable of being alternately processed, according to individual consumer choice, by either (1) a traditional wet-chemistry process with a phenylenediamine-containing developer solution followed by desilvering in one or more subsequent solutions to obtain a color negative film, or (2) a thermal process involving the use of a relatively minor amount of an aqueous solution containing a liberating agent such as alkaline base to activate (unblock) a blocked phenylenediamine developing agent located within the photographic element, followed by electronic scanning of the developed film without desilvering. This invention enables a single film stock to be developed in both a conventional deep tank process and in an apparently dry process.Type: GrantFiled: January 11, 2001Date of Patent: February 26, 2002Assignee: Eastman Kodak CompanyInventors: Mark E. Irving, Richard P. Szajewski, Lyn M. Irving
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Publication number: 20020022200Abstract: The present invention is directed to a method of processing color photographic film that has been imagewise exposed in a camera, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, which method in order comprises: (a) thermally developing the film step without any externally applied developing agent, comprising heating said film to a temperature greater than 80° C.Type: ApplicationFiled: May 23, 2001Publication date: February 21, 2002Inventors: Mark E. Irving, David T. Southby
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Publication number: 20020018956Abstract: This invention relates to packaged photographic film that is capable of being alternately processed, according to individual consumer choice, by either (1) a traditional wet-chemistry process with a developer solution followed by desilvering in one or more subsequent solutions to obtain a color negative film, or (2) a dry thermal process without the use of aqueous solutions in which a blocked developing agent located within the photographic element is thermally activated or unblocked, optionally followed by electronic scanning of the developed film without desilvering. This invention enables a single film stock to be developed in both a conventional deep tank process and in a dry thermal process.Type: ApplicationFiled: May 25, 2001Publication date: February 14, 2002Inventors: David H. Levy, James H. Reynolds, David T. Southby, Paul D. Zimmerman, Mark E. Irving
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Publication number: 20020018967Abstract: The present invention is directed to a method of processing color photographic film that has been imagewise exposed in a camera, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, one or more organic silver salts, a binder, and dye-providing coupler, which method in order comprises: (a) thermally developing the film step without any externally applied developing agent, comprising heating said film to a temperature greater than 80° C.Type: ApplicationFiled: May 14, 2001Publication date: February 14, 2002Inventors: Mark E. Irving, Richard P. Szajewski
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Publication number: 20020018944Abstract: This invention relates to a method of processing color photographic film that has been imagewise exposed in a camera, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, which method in order comprises (a) thermally developing the film step without any externally applied developing agent, comprising heating said film to a temperature greater than 80° C.Type: ApplicationFiled: May 14, 2001Publication date: February 14, 2002Inventors: Mark E. Irving, Richard P. Szajewski
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Publication number: 20020015928Abstract: The present invention is directed to the use of a mixture of non-light sensitive organic silver salts in a color photothermographic system comprising a blocked developing agent for color imaging. At least one of the organic silver salts is the sole or primary silver donor during thermal development and at least one other organic silver salt, present at levels in the range of 30,000 to 60,000 mg/mol of silver halide, effectively inhibits fog during thermal development of the photothermographic element. In one embodiment, and the system comprises a mixture of at least two organic silver salts, wherein the first organic silver salts exhibits a cLogP of 0.1 to 10 and a Ksp of 7 to 14 and wherein the second organic silver salt exhibits a cLogP of 0.1 to 10 and a Ksp of 14 to 21.Type: ApplicationFiled: May 23, 2001Publication date: February 7, 2002Inventors: Lyn M. Irving, David H. Levy, Mark E. Irving
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Publication number: 20020012886Abstract: The present invention relates to a novel blocked phenylenediamine developer useful, in reactive association, for enabling, on development, a non-magenta color, for example a cyan color, from a dye-forming coupler. In one embodiment, the developer has the property that the dye color formed with the coupler is distinctly different from the color formed by the same coupler with an oxidized form of the conventional developer 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine. The invention is also directed to a light-sensitive silver-halide color photographic element comprising the blocked developing agent according to the present invention.Type: ApplicationFiled: May 31, 2001Publication date: January 31, 2002Applicant: Eastman Kodak CompanyInventors: Richard P. Szajewski, Lyn M. Irving
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Publication number: 20020012887Abstract: The present invention is directed to a photothermographic element in which the density formed in a thermally processed photothermographic element is limited for the purpose of scanning the element prior to removal of silver halide, metallic silver, and/or any organic silver salts. In one embodiment of the invention, this is accomplished by employing limited quantities of sensitized silver halide in a photothermographic element.Type: ApplicationFiled: May 14, 2001Publication date: January 31, 2002Inventor: Richard P. Szajewski
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Publication number: 20020009677Abstract: A light sensitive silver halide color photographic element having a common chromogenic coupler and a distinct developer associated with each color forming layer unit is disclosed. In a first embodiment, the light sensitive silver halide color photographic element has a red light sensitive silver halide layer unit and a first blocked coupling developer, a green light sensitive silver halide layer unit and a second blocked coupling developer and a blue light sensitive silver halide layer unit having a third blocked coupling developer and wherein each layer unit has the same chromogenic coupler. In a second embodiment, the light sensitive silver halide color photographic element has a red light sensitive silver halide layer unit and a first blocked coupling developer, a green light sensitive silver halide layer unit and a second blocked coupling developer and a blue light sensitive silver halide layer unit having a third blocked coupling developer.Type: ApplicationFiled: May 31, 2001Publication date: January 24, 2002Inventors: Richard P. Szajewski, Lyn M. Irving
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Patent number: 6337170Abstract: This invention provides a color diffusion transfer image forming material comprising a light-sensitive material containing a compound which forms or releases a diffusible dye upon reaction with a developing agent derived from a light-sensitive silver halide, aminopheno derivative or phenylenediamine derivative and an oxidation product of the developing agent supported on a first support, and a dye-fixing material containing a discoloration preventing agent having a specific structure supported on a second support which may be the same as or different from the first support, wherein the light-sensitive material and the dye-fixing material are located so that the diffusible dye formed or released by developing is at least transferred from the light-sensitive material to the dye-fixing material in developing the light-sensitive material, thereby providing the image forming material with excellent properties in terms of dye concentration, image fastness and the like.Type: GrantFiled: June 3, 1998Date of Patent: January 8, 2002Assignee: Fuji Photo Film Co., Ltd.Inventor: Hideaki Naruse
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Patent number: 6319640Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.Type: GrantFiled: November 13, 2000Date of Patent: November 20, 2001Assignee: Eastman Kodak CompanyInventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
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Patent number: 6306551Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein the substituents are as defined in the specification.Type: GrantFiled: December 30, 1999Date of Patent: October 23, 2001Assignee: Eastman Kodak CompanyInventors: Zbyslaw R. Owczarczyk, Xiqiang Yang, David H. Levy, Mark E. Irving
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Patent number: 6303261Abstract: Disclosed are a silver halide color photographic material having on a support a photographic element in which silver halide grains, a developing agent and a coupler capable of forming a dye by reaction with an oxidation product of the developing agent are incorporated, the photographic element further comprising at least one color stain inhibitive compound represented by the following formula (SC-1) or (SC-2) and at least one photographically useful group-releasing compound represented by the following formula (II); and a method of forming color images by the use of the foregoing material: A—[(L1)a—(B)m]p—(L2)n—PUG (II)Type: GrantFiled: March 15, 2000Date of Patent: October 16, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Jun Arakawa, Toshio Kawagishi
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Publication number: 20010024771Abstract: This invention relates to packaged photographic film that is capable of being alternately processed, according to individual consumer choice, by either (1) a traditional wet-chemistry process with a phenylenediamine-containing developer solution followed by desilvering in one or more subsequent solutions to obtain a color negative film, or (2) a thermal process involving the use of a relatively minor amount of an aqueous solution containing a liberating agent such as alkaline base to activate (unblock) a blocked phenylenediamine developing agent located within the photographic element, followed by electronic scanning of the developed film without desilvering. This invention enables a single film stock to be developed in both a conventional deep tank process and in an apparently dry process.Type: ApplicationFiled: January 11, 2001Publication date: September 27, 2001Inventors: Mark E. Irving, Richard P. Szajewski, Lyn M. Irving
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Patent number: 6280919Abstract: The invention provides a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a coupler based on a 1-aryl-3-arylpyrazol-5-one ring and represented by formula I: wherein the substituents are as described in the specification.Type: GrantFiled: December 30, 1998Date of Patent: August 28, 2001Assignee: Eastman Kodak CompanyInventors: Wojciech K. Slusarek, Jerrold N. Poslusny, Zheng Z. Wu
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Patent number: 6261750Abstract: A silver halide color light-sensitive material contains at least one light-sensitive silver halide emulsion layer and at least one non-light-sensitive layer on a support, wherein at least one of the non-light-sensitive layers contains a silver halide emulsion having a previously fogged surface, and the non-light-sensitive layer containing the previously fogged emulsion and/or its adjacent layer contains a compound capable of releasing a photographically useful group or its precursor by a coupling reaction with the oxidized form of a developing agent, wherein the previously fogged emulsion is developed during color development to evenly form the oxidized form of a color developing agent, and the photographically useful group or its precursor is released non-imagewise by the coupling reaction.Type: GrantFiled: March 31, 2000Date of Patent: July 17, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshio Ishii, Takayuki Ito, Fumitaka Ueda, Hiroyuki Yoneyama
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Patent number: 6242166Abstract: This invention relates to packaged photographic film that is capable of being alternately processed, according to individual consumer choice, by either (1) a traditional wet-chemistry process with a phenylenediamine-containing developer solution followed by desilvering in one or more subsequent solutions to obtain a color negative film, or (2) a thermal process involving the use of a relatively minor amount of an aqueous solution containing a liberating agent such as alkaline base to activate (unblock) a blocked phenylenediamine developing agent located within the photographic element, followed by electronic scanning of the developed film without desilvering. This invention enables a single film stock to be developed in both a conventional deep tank process and in an apparently dry process.Type: GrantFiled: December 30, 1999Date of Patent: June 5, 2001Assignee: Eastman Kodak CompanyInventors: Mark E. Irving, Richard P. Szajewski, Lyn M. Irving