Abstract:
A color imaging element comprising a dye formed upon a reaction of an oxidation product of a compound represented by formula (I) shown below together with at least one water-soluble compound represented by formula (II) shown below on a support: wherein Z represents a carbamoyl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfonyl group or a sulfamoyl group; and Q represents an atomic group necessary for forming an unsaturated ring together with the carbon atom; wherein X represents a hydrogen atom, a hydroxy group, an aliphatic group, an acyl group, an aliphatic oxy group, an aliphatic oxycarbonyl group or an aryloxycarbonyl group; Y1 and Y2, which may be the same or different, each represents a hydrogen atom or a substituent, or Y1 and Y2 may be combined with each other to form a 5-membered or 6-membered ring; Z1 represents a simple bond, a methylene group which may be substituted or an ethylene group which may be substituted; Z2 represents a methylene group which may be substituted; and R1, R2, R3 and R4, which may be the same or different, each represents an aliphatic group, or R1 and R2 and R3 and R4 each may be combined with each other to form a 5-membered or 6-membered ring. A method of forming a color diffusion transfer image is also disclosed.
Abstract:
This invention relates to photographic light-sensitive silver halide emulsions wherein the silver grains are spectrally sensitized to near infrared radiation at wavelengths above 700 nm with a particular class of cyanine dyes and to photographic elements and film units employing such emulsions.
Abstract:
There is described a multicolor diffusion transfer film unit having a plurality of different color image components, each of which includes a color-sensitive silver halide emulsion in association with a corresponding image dye-providing material and a first silver halide developer which takes part in photographic development to provide an imagewise pattern of diffusible image dye-forming material as a function of photoexposure. At least one of said color image components includes a second silver halide developer, or a precursor thereof, which is capable of developing silver halide indiscriminately and which is made available after photographic development in the color image component in which it is located is substantially completed.
Abstract:
A color diffusion transfer light-sensitive material is described including a support having thereon at least one light-sensitive emulsion layer associated with a dye image-forming material and an electron donor, wherein the dye image-forming material comprises at least one reducible dye-providing compound represented by formula (I) which releases a diffusible dye upon being reduced and tabular silver halide grains having a mean grain diameter of at least about 0.3 .mu.m, a mean grain thickness of less than about 0.5 .mu.m, and a mean aspect ratio of at least about 2 account for at least about 50% of the total projected area of the silver halide grains contained in at least one light-sensitive emulsion layer;PWR - (Time).sub.t - Dye (I)wherein PWR represents a group capable of releasing -(Time).sub.t -Dye upon being reduced; Time represents a group capable of releasing Dye through a subsequent reaction after being released as -(Time).sub.t -Dye from PWR; t represents 0 or 1; and Dye represents a dye or a dye precursor.
Abstract:
An internal latent image type positive silver halide emulsion has improved sensitivity reduction in low illuminance exposures. A color diffusion transfer light-sensitive material incorporates the emulsion and has reduced sensitivity reduction. The internal latent image type positive silver halide emulsion is prepared using a polymer having a repetitive unit derived from an ethylenically unsaturated monomer having at least one thioether structure on a side chain as a deflocculating agent to form silver halide grains and subjecting the grain surfaces to a chemical sensitization in the presence of a polymer having a repetitive unit represented by the following Formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a substituted or unsubstituted alkyl group and Q represents a group selected from the group consisting of groups represented by the following Formula (1) to Formula (4): ##STR2## wherein q represents an integer of 2 to 4; ##STR3## wherein R.sup.2 and R.sup.3 each independently represents a hydrogen atom or a substituted or unsubstituted alkyl group; ##STR4## wherein Z.sup.1 represents a group of atoms necessary to form a substituted or unsubstituted lactam ring, a substituted or unsubstituted oxazolidone ring, or a substituted or unsubstituted pyridone ring; and A represents a single bond, a --C(.dbd.O)-- group, or a group represented by the following Formula (3a): ##STR5## wherein B represents an --O-- group or an --N(R.sup.4)-- group, in which R.sup.4 represents a hydrogen atom or a substituted or unsubstituted alkyl group; and k represents an integer of 1 to 6; ##STR6## wherein A has the same meaning as A in the above Formula (3); D represents a single bond, an --O-- group or an --N(R.sup.5)-- group; m and n each represents an integer of 1 to 6, which satisfy the relationship of m+n.dbd.4 to 7, in which R.sup.5 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a group represented by the following Formula (4a): ##STR7## wherein R.sup.6 represents a substituted or unsubstituted alkyl group.
Abstract:
Disclosed is a color diffusion transfer photosensitive material containing a compound represented by a color diffusion transfer photosensitive material containing at least one compound represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom, an aliphatic group or an aryl group; and R.sub.3 represents an aliphatic group or a group represented by the following general formula (Ab): ##STR2## wherein R.sub.4 represents a hydrogen atom, an aliphatic group or an aryl group and R.sub.5 represents an aliphatic group, an aryl group or an amino group; and further, R.sub.1 and R.sub.2, R.sub.1 and R.sub.3, R.sub.2 and R.sub.3, or R.sub.4 and R.sub.5 may combine with each other to form a 5- to 7-membered ring, or R.sub.1, R.sub.2 and R.sub.3 may combine with one another to form a bicyclo ring; wherein the total number of carbon atoms contained in R.sub.1, R.sub.2 and R.sub.3 is not smaller than 10, at least either R.sub.1 or R.sub.2 is an aliphatic group, and R.sub.3 is a group represented by general formula (Ab) when one of the groups R.sub.1 and R.sub.2 is an aliphatic group and the other is an aryl group.
Abstract:
A heat-developable color photographic material comprising a support having thereon at least a light-sensitive silver halide, a binder, at least one of an electron-donating agent and a precursor thereof, a reducible dye-forming compound which releases a diffusible dye by reduction and an electron-transferring agent, wherein an electron-transferring agent precursor co-exists together with the electron-transferring agent.
Abstract:
Diffusion transfer color films and processes are disclosed which use dye developer chemistry to form at least one color record and which use image dye-releasing thiazolidine chemistry to form at least one of the other color records.
Abstract:
A silver halide photographic light-sensitive material containing, in at least one layer thereof, a compound capable of releasing a fogging agent upon an oxidation-reduction reaction with an oxidation product of a developing agent under an alkaline condition. The material has an increased sensitivity, an increased contrast and an accelerated development rate.
Abstract:
A silver halide photographic light-sensitive material comprising a support having provided thereon at least one internal latent image type direct positive silver halide emulsion layer is disclosed, wherein(1) said internal latent image type direct positive silver halide emulsion layer comprises at least two layers having substantially the same color sensitivity, or(2) at least said internal latent image type direct positive silver halide emulsion and a solid pigment-containing layer contiguous thereto, which is positioned on the side opposite to the side of the silver halide emulsion layer to be exposed, are provided,and wherein at least one internal latent image type direct positive silver halide emulsion in (1) or (2) has a binder/silver halide (calculated as silver) ratio by weight of more than 1.25.