| Patent Number |
Title Of Patent |
Date Issued |
| T998006 |
Nondiffusive compounds comprised of a sensitizing dye moiety and an image dye moiety joined by a |
September 2, 1980 |
| Radiation-cleavable nondiffusible compounds for providing a transfer dye image are comprised of a spectral sensitizing dye moiety and a diffusible image dye moiety joined by a linkage in the spectral sensitizing dye moiety which is cleaved upon absorption of radiation by the spectral |
| RE29168 |
Photographic elements with light absorbing layers |
April 5, 1977 |
| Novel photographic materials comprising a light-sensitive layer and a light-absorbing material are described. The light-absorbing materials comprise colored components which are decolorized by various forms of energy, such as, for example heat. The novel light-absorbing materials are |
| 6727055 |
High bromide cubic grain emulsions |
April 27, 2004 |
| A radiation-sensitive emulsion is disclosed comprised of cubic silver iodochlorobromide grains comprising 0.25 to about 1.5 mol % iodide, 1 to about 25 mol % chloride, and from about 73.5 to 98.75 mol % bromide, each based on total silver in the emulsion, wherein the grains have an avera |
| 6312884 |
Photographic element |
November 6, 2001 |
| This invention comprises a photographic element comprising a light sensitive silver halide emulsion layer which contains a sensitizing dye of the formula: ##STR1##wherein:n is 0 or 1;X, Y, and Z are independently O, N, S, Se, or C;X' is O, NR.sub.13, S, or Se;R.sub.1 and R.sub.2 are acid |
| 5563021 |
Photographic elements with tetra-nuclear merocyanine sensitizers |
October 8, 1996 |
| A photographic element comprising a light sensitive silver halide emulsion sensitized with a dye of formula (I) and a nucleating agent or amine booster associated with the silver halide emulsion: ##STR1## wherein: R.sub.3 is an alkyl group, alkenyl group, or aryl groupR.sub.4 and R.s |
| 5464736 |
Photographic elements containing particular sensitizing dyes |
November 7, 1995 |
| A photographic element having a silver halide emulsion sensitized by dye of the formula I: ##STR1## wherein: R.sup.1 represents a substituted or unsubstituted aromatic or heteroaromatic group, a substituted or unsubstituted alkyl or H;R.sup.2 represents a substituted or unsubstituted |
| 5091298 |
Sensitizing dyes for photographic materials |
February 25, 1992 |
| Dyes according to formulas (I), (II), (III), (IV), and (V) below are described. The dyes are useful as low-staining sensitizing dyes for photographic materials. ##STR1## Z.sub.1, Z.sub.2, Z.sub.3, R.sub.1, R.sub.2, L, D, G, X, n, P, and q are defined herein. |
| 5079139 |
Silver halide photographic material |
January 7, 1992 |
| A photosensitive photographic material is described comprising a support bearing a silver halide emulsion layer sensitized with a dye of the general formula: ##STR1## wherein Y is S or Se,L.sup.1, L.sup.2, L.sup.3, L.sup.4 and L.sup.5 are each independently substituted or unsubst |
| 4965183 |
Tri-nuclear dyes for photographic compositions and method of prepartion |
October 23, 1990 |
| Compounds of the formulaa: ##STR1## where Z.sub.1, Z.sub.2, L.sub.1 -L.sub.5, R.sub.1, R.sub.2, R.sub.3, m, and n are as defined herein are disclosed. A method of making the componds is also disclosed. the compounds are useful as sensitizing dyes in photographic elements. |
| 4578348 |
Hydrolyzed azolium speed enhancing/fog-inhibiting agents for silver halide photography |
March 25, 1986 |
| Radiation sensitive silver halide photographic elements are disclosed which are protected from fog by hydrolyzed quaternized chalcogenazolium salts of middle chalcogens, wherein the quaternizing substituent contains a ##STR1## group in which T and T.sup.1 are carbonyl or sulfonyl and |
| 4575483 |
Photographically useful chalcogenazolium polymethine dyes |
March 11, 1986 |
| Polymethine dyes are disclosed containing a tellurazolium nucleus which is substituted at its 2-position with methine chain which is in turn substituted at its .beta. position with a dye property modifier. These dyes can be used in photographic elements to facilitate image formation. |
| 4197080 |
Radiation-cleavable nondiffusible compounds and photographic elements and processes employing th |
April 8, 1980 |
| Radiation-cleavable nondiffusible compounds for providing a transfer dye image are comprised of a spectral sensitizing dye moiety and a diffusible image dye moiety joined to a linkage in the spectral sensitizing dye moiety which is cleaved upon absorption of radiation by the spectal |
