摘要:
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a “NB coupler” having the formula (I): wherein: the term “NB coupler” represents a coupler of formula (I) that forms a dye for which the left bandwidth (LBW) using spin-coating is at least 5 nm less than that of the same dye in solution form; Y is H or a coupling-off group; each Z* is an independently selected substituent group where p is 0 to 2; V is a substituent group containing a sulfone group; R4 is represented by the formula wherein each of R5, R6 and R7 is hydrogen or an independently selected substituent with no more than one being hydrogen; provided that two or more of R5, R6 and R7 may join to form a ring or rings and provided that the combined sum of the aliphatic carbon atoms in V, R4 and all Z* is at least 8, and provided further that R4 is not a fully fluorinated alkyl group. Such elements provide improved hue.
摘要:
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a “NB coupler” having the formula (I): wherein: the term “NB coupler” represents a coupler of formula (I) that forms a dye for which the left bandwidth (LBW) using spin-coating is at least 5 nm less than that of the same dye in solution form; Y is H or a coupling-off group; each Z* is an independently selected substituent group where p is 0 to 2; V is a substituent group containing a sulfonamido group; R4 is hydrogen or a group bonded to the carbonamido group by an aliphatic carbon atom; provided that the combined sum of the aliphatic carbon atoms in V, R4 and all Z* is at least 8. The element provides a dye of improved hue.
摘要:
Disclosed is a color photographic element comprising at least four imaging layers including: a first light sensitive silver halide imaging layer having associated therewith a cyan image dye-forming coupler; a second light sensitive silver halide imaging layer having associated therewith a magenta image dye-forming coupler; a third light sensitive silver halide imaging layer having associated therewith a yellow image dye-forming coupler; and a fourth light sensitive silver halide imaging layer having associated therewith a fourth image dye-forming coupler for which the normalized spectral transmission density distribution curve of the dye formed by the fourth image dye-forming coupler upon reaction with color developer has a CIELAB hue angle, hab, from 225 to 310°. The element provides improved color gamut.
摘要:
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a cyan coupler having the formula: wherein: V is a sulfone or sulfoxide containing group; Y is H or a coupling-off group; W2 represents the atoms necessary to complete a carbocyclic or heterocyclic ring group; each Z″, Z* and Z# is an independently selected substituent group where n and r are independently 0 to 4 and p is 0 to 2; and X is a halogen atom, and s is 1 to 5; provided that the combined sum of the aliphatic carbon atoms in V, all Z″, all Z#, and all Z* is at least 8. The element exhibits improved cyan dye stability.
摘要:
A color negative photographic element is disclosed containing higher levels of oxidized developer agent scavenging compound in the lowest and intermediate sensitivity layers of a triple-coated image recording unit than in the fast layer. Reduced fog and granularity are obtained, and increased speed and latitude are obtained.
摘要:
An improved color reversal element comprising: a support having thereon at least two light-sensitive silver halide emulsion layers and a compound capable of releasing a development inhibitor, the element comprising a compound having the structural formulaCAR--(TIME).sub.n --INHwherein:CAR is a carrier moiety from which --(TIME).sub.n --INH is released during color development;TIME is a timing group; INH is comprised of a development inhibitor moiety selected from the group consisting of oxazole, thiazole, diazole, oxathiazole, triazole, thiatriazole, benzotriazole, tetrazole, benzimidazole, indazole, isoindazole, mercaptotriazole, mercaptothiadiazole, mercaptotetrazole, selenotetrazole, mercaptothiazole, selenobenzothiazole, mercaptobenzoxazole, selenobenzoxazole, mercaptobenzimidazole, mercaptobenzothiazole, selenobenzimidazole, benzodiazole, mercaptooxadiazole, or benzisodiazole, the INH havina an inhibitor strength greater than 1 (one), andn is 0, 1 or 2.
摘要:
A photographic element comprises a support bearing at least one photographic silver halide emulsion layer and at least one coupler (A) having a water solubilizing group wherein coupler (A) forms a compound that is washed out of the photographic element during photographic processing and forms a coupling-off group represented by the formula:--X--Rel.sup.2 --T.sup.2 --INHwherein;X is selected from oxygen, nitrogen or sulfur;X--Rel.sup.2 contains a photographic ballast and is a releasing group for releasing T.sup.2 --INH from X--Rel.sup.2 by elimination electron transfer reaction during photographic processing without substantial delay of releasing;T.sup.2 is a timing group that releases INH by elimination electron transfer reaction with timing delay during photographic processing;INH is a development inhibitor group.The photographic coupler (A) enables formation of easily removable dyes in photographic elements and processes that provide images having improved acutance, stability and interimage effects.
摘要:
A method of forming a washout photographic coupler comprising a coupler moiety (COUP) containing a substituted or unsubstituted ballasted releasing group (A) selected from aryloxy, thioaryloxy, heterocyclicoxy, and thioheterocyclicoxy releasing groups having attached thereto a phenoxy timing group containing a photographically useful group (PUG), the releasing group capable of intramolecular displacement to release the timing group, the method comprising:(a) providing a coupler moiety (COUP) having the releasing group (A) in a coupling off position, the releasing group (A) having a 2 position containing a carbamyl chloride;(b) reacting the carbamyl chloride with a phenoxy timing group having an amine blocked with a carbamate group, the reacting being carried out in the presence of a base to form a first product;(c) removing the carbamate group using an acid to provide a coupler moiety (COUP) having a releasing group (A) and phenoxy timing group having an amine group; and(d) reacting the amine group to form a carbamyl chloride on the phenoxy timing group before reacting with a photographically useful group to form the washout coupler.
摘要:
The invention provides an OLED device including a cathode, an anode, and having there between a light-emitting layer, further including, between the cathode and the light emitting layer, a first layer containing a fluoranthene compound including one and only one fluoranthene nucleus and having no aromatic rings annulated to the fluoranthene nucleus, the fluoranthene nucleus having independently selected aromatic groups in the 7,10-positions and an azine group in the 8- or 9-position, provided that the azine group is not a phenanthroline group. The OLED device desirably includes a second layer containing an alkali metal or alkali metal compound, located between the cathode and the first layer. The OLED device can also include a polycyclic aromatic hydrocarbon compound in the first layer or in a third layer located between the first layer and the light-emitting layer. Devices of the invention provide improvement in features such as efficiency and drive voltage.
摘要:
The invention provides an OLED device comprising a cathode, an anode, and having there between a light-emitting layer, further comprising, between the cathode and the light emitting layer, a non-luminescent electron transporting layer containing a compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus and desirably comprises still further an additional layer containing an organic alkali metal compound, located between the cathode and the electron transporting layer. Devices of the invention provide improvement in features such as efficiency, drive voltage, and operational stability.