摘要:
An aqueous-developable photographic color diffusion transfer element comprising one and only one dimensionally stable support and one or more layers comprising radiation sensitive silver halide, thermal solvent for facilitating the thermal diffusion of dyes through a hydrophilic binder, a dye-releasing coupler, a dye-receiving layer intermediate said support and dye-releasing coupler containing layers, a stripping layer intermediate said dye-receiving layer and any layers containing silver halide or dye-releasing coupler, and hydrophilic binder, wherein said dye is heat diffusible in said binder and thermal solvent, wherein said dye-releasing coupler is of the structureCp--L--DyewhereCp is a coupler radical substituted in the coupling position with a divalent linking group, L;Dye is a dye radical exhibiting selective absorption in the visible spectrum; and where said --L--Dye group couples off upon reaction of said coupler radical with the oxidation product of a primary amine developing agent, and such that said Dye radical is subsequently released from the --L--Dye group;where said stripping layer contains a stripping agent; andwherein said thermal solvent has the structure I: ##STR1## wherein (a) Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, and Z.sub.5 are substituents, the Hammet sigma parameters of Z.sub.2, Z.sub.3, and Z.sub.4 sum to give a total, .SIGMA., of at least -0.28 and less than 1.53;(b) the calculated logP for I is greater than 3 and less than 10, is disclosed.
摘要:
In accordance with this invention a diffusion transfer process is provided for forming a color photographic image comprising the steps of: (a) using an integral element comprising one and only one dimensionally stable layer comprising a coating support, and coated thereon in reactive association a mordant layer comprising a material which binds a diffusible dye, an imaging layer comprising radiation sensitive silver halide, a diffusible dye forming layer comprising a diffusible dye forming compound, and a barrier layer overlaying said diffusible dye forming layer, wherein said support is selected from the group consisting of reflection base and transparent base materials, wherein said diffusible dye forming layer is the same or different than said imaging layer, wherein said barrier layer comprises a polymer that allows the passage of solutions for processing said element when said element is contacted with an external processing bath, and wherein said barrier layer impedes the diffusion out of said element of the diffusible dye formed from said diffusible dye forming compound; (b) exposing said element to actinic radiation; (c) processing said element by contacting said element to an external bath containing compounds selected from the group consisting of conventional color developer compounds of the primary amine type, compounds which activate the release of incorporated color developers, and compounds which activate development by incorporated dye developers; (d) washing said element to remove compounds imbibed in step (c). In a preferred embodiment said integral element further comprises a stripping layer coated intermediate the mordant layer and dye forming layer. In another preferred embodiment said process further comprises the step of stripping said mordant and support from said diffusible dye forming layer.
摘要:
A process for forming an improved dye image in a heat-developable photographic dry dye-diffusion transfer element comprising the steps of:providing a heat-developable chromogenic photographic dry dye-diffusion transfer element comprising radiation sensitive silver halide, an organic silver salt, a heat-developable dye-forming compound wherein said compound forms or releases a heat-transferable dye upon reaction of said compound with the oxidation product of a reducing agent, a reducing agent, a hydrophilic binder, and a thermal solvent wherein said thermal solvent comprises a 3-hydroxy benzamide or a 4-hydroxy benzamide and has the structure I ##STR1## wherein (a) Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, and Z.sub.5 are substituents, the Hammet sigma parameters of Z.sub.2, Z.sub.3, and Z.sub.4 sum to give a total, .SIGMA., of at least -0.28 and less than 1.53;(b) the calculated logP for I is greater than 3 and less than 10;exposing said dye-diffusion transfer element to actinic radiation;heating said dye-diffusion transfer element to develop a heat-diffusible dye image;providing a dye-receiving layer and contiguous dimensionally stable support where said dye-receiving layer is in physical contact with said dye-diffusion-transfer element;heating said element and dye-receiving layer to effect dye-diffusion transfer;, andseparating said dye-receiving layer and contiguous support from said dye-diffusion transfer element is disclosed.
摘要:
A process is disclosed for forming an improved dye image in an aqueous-developable photographic dry dye-diffusion transfer element comprising the steps of:providing an aqueous-developable chromogenie photographic dry dye-diffusion transfer element comprising radiation sensitive silver halide, an aqueous-developable material containing color coupler wherein said coupler forms or releases a heat-transferable dye upon reaction of said coupler with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a thermal solvent wherein said thermal solvent has the structure I ##STR1## wherein (a) Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, and Z.sub.5 are substituents, the Hammer sigma parameters of Z.sub.2, Z.sub.3, and Z.sub.4 sum to give a total, .SIGMA., of at least -0.28 and less than 1.53;(b) the calculated IogP for I is greater than 3 and less than 10;exposing said dye-diffusion transfer element to actinic radiation;contacting said dye-diffusion transfer element with an aqueous-developing solution, wherein said aqueous-developing solution comprises a primary amine developing agent;contacting said dye-diffusion transfer element with an aqueous stop bath;drying said dye-diffusion transfer element;providing a dye-receiving layer and contiguous support, where said dye-receiving layer is in physical contact with said dye-diffusion transfer element;heating said dye-diffusion transfer element and dye-receiving layer to effect dye-diffusion transfer; andseparating said dye-receiving layer and contiguous support from said dye-diffusion transfer element.
摘要:
Pyrazolone magenta dye-forming couplers having a particular arylthio coupling-off group enhance the photographic properties and improve the manufacturing and handling characteristics of materials and processes employing such couplers. The coupler contains an N-phenyl group, a 3-anilino group and a 4-(arylthio) coupling off group containing a particular aryloxymethylacylamino group as an ortho substituent. A broad range of improvements are realized including stability, reactivity, hue, and dye density in addition to simplified and safer manufacture.The coupler may be represented by the following formula where the substituents and variables are as defined in the specification: ##STR1##
摘要:
A method of virtualizing memory through shadow page tables that cache translations from multiple guest address spaces in a virtual machine includes a software version of a hardware tagged translation look-aside buffer. Edits to guest page tables are detected by intercepting the creation of guest-writable mappings to guest page tables with translations cached in shadow page tables. The affected cached translations are marked as stale and purged upon an address space switch or an indiscriminate flush of translations by the guest. Thereby, non-stale translations remain cached but stale translations are discarded. The method includes tracking the guest-writable mappings to guest page tables, deferring discovery of such mappings to a guest page table for the first time until a purge of all cached translations when the number of untracked guest page tables exceeds a threshold, and sharing shadow page tables between shadow address spaces and between virtual processors.
摘要:
An aqueous-developable chromogenic photographic heat-transferable non-aqueous dye-diffusion-transfer photographic element is disclosed, wherein said element comprises radiation sensitive silver halide, a dye-providing compound that forms or releases a heat-transferable image dye upon reaction of said compound with the oxidation product of a primary amine developing agent, a hydrophilic binder, and a thermal solvent for facilitating non-aqueous diffusion transfer according to formula (I) ##STR1## wherein AH is a hydrogen bond donating group with an aqueous pK.sub.a value for proton loss of greater than 6;L.sup.1 and L.sup.2 are each independently divalent linking groups consisting of groups of 1 to 12 atoms or are independently absent;m is 1, 2, or 3;Q comprises a group of 2 to 15 carbon atoms selected from the group consisting of aromatic rings, alkyl chains, alkyl rings, or ring-chain combinations, optionally substituted with substituents, Z, consisting of alkyl groups or halogens;B is a hydrogen bond accepting group with an aqueous pK.sub.a value for proton gain of less than 6;n is 1 or 2;the groups AH and B cannot hydrogen bond to form a ring of either 5 or 6 atoms;R is an alkyl, aryl and alkylaryl group of from 1 to 18 carbon atoms;the calculated log of the octanol/water partition coefficient (clogP) is greater than 3 and less than 10.
摘要:
A photoconductive element having at least two layers, namely a charge-generation layer and a charge transport layer, is disclosed. The charge-generation layer contains a finely divided co-crystalline complex of (i) at least one polymer having an alkylidene diarylene group in a recurring unit and (ii) at least one pyrylium-type dye salt. The charge transport layer contains an organic photoconductive charge transport material exhibiting both kinetic and thermodynamic stability. Either one or both of the charge-generation and charge-transport layers of the element also contains a protonic acid material. The resultant photoconductive element exhibits persistent conductivity.
摘要:
A method of virtualizing memory through shadow page tables that cache translations from multiple guest address spaces in a virtual machine includes a software version of a hardware tagged translation look-aside buffer. Edits to guest page tables are detected by intercepting the creation of guest-writable mappings to guest page tables with translations cached in shadow page tables. The affected cached translations are marked as stale and purged upon an address space switch or an indiscriminate flush of translations by the guest. Thereby, non-stale translations remain cached but stale translations are discarded. The method includes tracking the guest-writable mappings to guest page tables, deferring discovery of such mappings to a guest page table for the first time until a purge of all cached translations when the number of untracked guest page tables exceeds a threshold, and sharing shadow page tables between shadow address spaces and between virtual processors.
摘要:
Magenta image-dye couplers provide photographic elements and processes having superior photographic properties. The couplers are 3-anilino pyrazolone couplers having an aryl thio coupling-off group. The substituents of the coupler are specified to obtain advantageous properties.