摘要:
A photographic element having improved granularity contains a dye-forming coupler containing a carbamic acid precursor capable of being converted into a carbamic acid group during processing, and wherein after processing the carbamic acid group decomposes, leaving the dye substantially non-diffusable.
摘要:
A photographic element including a support bearing a silver halide photographic emulsion, at least one color-forming coupler and a masking coupler, wherein said masking coupler is represented by the formula A:COUP--LINK--DYE (A)wherein COUP is a coupler moiety;LINK is any group releasable or cleavable from COUP by coupling with an oxidized developing agent during photographic processing; and DYE is an azoaniline dye and preferably an azoaniline dye blocked at the nitrogen-inclusive auxochromic site.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
The invention provides a photographic element comprising a substrate bearing a photographic silver halide emulsion layer having associated therewith a high dye-yield coupler having the formula: ##STR1## wherein: COUP is a photographic coupler residue capable of coupling with oxidized color developer to form a first dye;T is a timing group;m is an integer from 0 to 2;L is a linking group selected from the group consisting of --OC(.dbd.O)--, --OC(.dbd.S)--, --SC(.dbd.O)--, --SC(.dbd.S)--, and --OC(.dbd.NSO.sub.2 R) where R is substituted or unsubstituted alkyl or aryl; andDYE is a releasable second dye or dye precursor having a particular formula including a methine dye chromophore.
摘要:
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.
摘要:
Disclosed is a carbamyl chloride of an aminoarylcarbonyl compound having the structural formula I: wherein R is an alkyl, alkenyl, or aryl group; A is an aryl (including heteroaryl) ring group; each R′ is independently an alkyl group which may form a ring with Z or Z′; p is 0, 1, 2, or 3; each Z, Z′, and Y is independently hydrogen or a substituent; and n is 0, 1, or 2.
摘要:
A method of making an alkylaminoarylcarbonyl compound having Formula I: ##STR1## wherein R is an alkyl group;A is an aryl (including heteroaryl) ring;each R' is independently an alkyl group which may form a ring with Z or Z';p is 0, 1, 2, or 3;each Z, Z', and Y is independently hydrogen or a substituent; andn is 0, 1, or 2;comprising:(a) blocking the carbonyl function of an aminoarylcarbonyl compound via condensation with an active methylene compound(b) alkylating this blocked amniocarbonyl compound via reductive alkylation with an alkyl or aryl (including heteroaryl) carbonyl compound, and(c) deblocking of the blocked alkylaminoarylcarbonyl compound via base hydrolysis to regenerate the carbonyl function and give the desired alkylaminocarbonyl compound.
摘要:
Disclosed is a photographic element containing a light sensitive silver halide emulsion layer having associated therewith a coupler represented by Formula I: ##STR1## wherein COUP is a coupler parent group capable of reacting with an oxidized developer to form a first dye and is bonded at a coupling position to the group ##STR2## wherein X is a or NSO.sub.2 R; R is an alkyl or aryl group; and DYE is a releasable second dye that is after release the same color as the first dye and is linked to OC.dbd.X by a moiety of the DYE having Formula (IA): ##STR3## wherein R.sup.2 is a substituent; provided there is contained in the coupler of Formula I at least one group of Formula IB:--L.sub.m --Sol IBwherein L is a divalent linking group and m is 0 or 1; and Sol is a group containing an acidic hydrogen selected from the group consisting of --ArOH, --NHSO.sub.2 R.sup.1 and --SO.sub.2 NHR.sup.1, in which AR is an aromatic group and each R.sup.1 is a substitute; provided further that the pKa of an acidic hydrogen of Sol is less than 8.8.