Loading patent…
AssigneeEastman Kodak Company
InventorsJose M. Fernandez, Robert G. Cameron, Edward J. Walsh
Estimating the term…
Fluorinated 1-hydroxy-2-naphthamide couplers which are N-substituted with a lower alkylphenoxybutyl ballasting group are disclosed as well as compositions and photographic elements containing these couplers in coupler solvent particles. The coupler solvent particles are comprised of a combination of a coupler solvent and the coupler capable of permitting the formation of a microcrystalline dye. Surprisingly these microcrystalline dyes exhibit a broadened absorption characteristic in the 750 to 850 nm region of the spectrum. Dye images having such absorption characteristics are particularly suited to forming integral infrared absorbing sound tracks in photographic elements, such as motion picture projection films.
In a silver halide photographic element comprising a support and, coated thereon, at least one layer unit which comprises a photographic silver halide emulsion layer and coupler solvent particles dispersed in a photographically useful amount in said emulsion layer or in an adjacent hydrophilic colloid layer,
In a silver halide photographic element comprising a support and, coated thereon, at least one layer unit which comprises a photographic silver halide emulsion layer and coupler solvent particles dispersed in a photographically useful amount in said emulsion layer or in an adjacent hydrophilic colloid layer,
A photographic element adapted to form an integral infrared absorbing dye sound track capable of producing a maximum density in excess of 1 throughout the spectral region of from 750 to 850 nm comprising
A composition which can be coated to form a layer of a photographic element comprising a hydrophilic colloid and coupler solvent particles dispersed therein in a photographically useful amount comprised of a combination, capable of permitting the formation of a microcrystalline dye, of a coupler solvent and a coupler of the formula ##STR10## wherein R is a coupling-off group and
A composition which can be coated to form a layer of a photographic element comprising a hydrophilic colloid and coupler solvent particles dispersed therein a photographically useful amount comprised of a combination, capable of permitting the formation of a microcrystalline dye, of
A gelatino-silver halide emulsion which can be coated to form a layer of a photographic element comprising coupler solvent particles dispersed therein in a photographically useful amount comprised of a combination, capable of permitting the formation of a microcrystalline dye, of
A gelatino-silver halide emulsion which can be coated to form a layer of a photographic element comprising coupler solvent particles dispersed therein in a photographically useful amount comprised of N-(2,4-diamylphenoxybutyl)-5,6,7,8-tetrafluoro-1-hydroxy-2-naphthamide and dibutyl phthalate in a weight ratio of from 2.5:1 to 1.5:1.
Dependencies are inferred from the claim text.