Abstract: A radiation responsive composition containing a compound represented by the following formula (I) and a photoreducing agent capable of forming a redox couple together with said compound for many uses, e.g., image formation, etching, plating, etc.: ##STR1## wherein N represents a nitrogen atom; X represents an oxygen atom (--O--), a sulfur atom (--S--), or a nitrogen-containing group of formula, ##STR2## R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represents a mere bond, a substituted or unsubstituted alkyl, aryl, heterocyclic, acyl, aralkyl, alkenyl, alkynyl or carbamoyl group, or a sulfonyl group into which a substituted or unsubstituted alkyl or aryl group has been introduced, provided that at least one of the substituents R.sup.1 to R.sup.3 be a substituted or unsubstituted aryl or heterocyclic group and that two or more of R.sup.1, R.sup.2 and R.sup.3, or of R.sup.1, R.sup.2, R.sup.3 and R.sup.

Abstract: A light-sensitive element for the diffusion transfer process which comprises a support having thereon a light-sensitive silver halide emulsion layer having associated therewith a yellow dye providing compound represented by the following general formula (I): ##STR1## wherein CAR represents a carrier moiety which is capable of releasing a diffusible dye from the compound in correspondence or counter-correspondence to development under alkaline conditions; Link represents a group connecting CAR with a diffusible dye; m represents 0 or 1; the dotted lines mean that at least one of the dotted lines is a bond; R.sup.1 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group or a carbamoyl group; R.sup.2 represents an alkyl group or an aryl group; and R.sup.3 represents an aryl group excepting an aryl group having the Hammett's .sigma..sub.p value less than 0.01.

Abstract: A novel silver halide light-sensitive material is provided, comprising a compound represented by the general formula (I): ##STR1## wherein EAG represents an aromatic group which receives electrons from a reducing substance; R.sup.1 represents hydrogen atom or a substituent; R.sup.2 represents an electrophilic group, with the proviso that R.sup.1 and R.sup.2 may be in the position of cis or trans to each other; R.sup.3 and R.sup.4 each represents hydrogen atom or a hydrocarbon group; ETG represents a group capable of transferring electrons; e represents an integer 0 or 1; Time represents a group which undergoes reaction triggered by the cleavage from the carbon carrying R.sup.3 and R.sup.4 to release PUG; t represents an integer 0 or 1; and PUG represents a photographically useful group.In a preferred embodiment, R.sup.1 represents an aromatic group, heterocyclic group or group represented by --Y.sup.1 --R.sup.5 in which Y.sup.1 represents a hetero atom or hetero atomic group and R.sup.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, said emulsion layer or at least one of other hydrophilic colloid layers containing a compound represented by formula (I):PWR--Time--.sub.T LA (I)wherein PWR represents a group which undergoes reduction to release (Time).sub.t LA; Time represents a group which release LA upon reaction following release of (Time).sub.t LA from PWR; t represents an integer of 0 or 1; and LA represents a group having a maximum light absorption in a wavelength range of 310 nm or more.

Abstract: A heat-developable color light-sensitive material is disclosed, comprising a support having thereon at least one layer containing a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A), and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a nondiffusible form, said compound of formula (A) being represented by ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an acylamino group, an alkylthio group, an arylthio group, or a halogen atom, provided that at least one of R.sub.1, R.sub.2, and R.sub.

Abstract: A silver halide photographic material having at least one silver halide emulsion layer on a support, comprising a compound of formula (I):PWR--(Time).sub.t --FWA (I)in which PWR represents a group capable of releasing (Time).sub.t --FWA upon reduction; FWA represents a group which functions as a brightening agent; Time represents a group capable of releasing FWA through a reaction which follows the release of (Time).sub.t --FWA from PWR; and t represents an integer of 0 or 1.

Abstract: A color diffusion transfer photographic material comprises a base having thereon at least one silver halide emulsion layer and a dye image-receiving layer, at least one layer thereof containing a dye-releasing redox compound and at least one layer thereof containing a development inhibitor-releasing compound represented by the following general formula (I):A--Time).sub.t DIG (I)wherein A represents ##STR1## linked to --Time).sub.t DIG through at least one of R.sup.1, R.sup.2 and EAG; R.sup.1 and R.sup.2, which may be the same or different, each represents a single bond or a substituent other than a hydrogen atom, provided that R.sup.1 and R.sup.2 may be linked to form a ring; EAG represents an electron-accepting group; Time represents a group capable of releasing DIG after EAG accepts an electron; DIG represents a development inhibitor precursor; and t is an integer of 0 or 1.

Abstract: A silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, and containing a compound containing a repeating unit, said compound containing a repeating unit being connected at the repeating unit to a compound represented by formula (I) at the position of the PWR or Time moiety:PWR--Time.sub.t PUG (I)wherein PWR represents a moiety capable of releasing (Time.sub.t PUG upon reduction, and PUG represents a group which can fulfil a photographically useful function after the release; Time represents a moiety capable of releasing PUG through a reaction subsequent to the release from PWR in the form of --Time.sub.t PUG; and t represents 0 or 1.

Abstract: A heat-developable color light-sensitive material is disclosed, comprising a support having thereon at least one layer containing a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A), and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a non-diffusible form, said compound of formula (A) being represented by ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an acylamino group, an alkylthio group, an arylthio group, or a halogen atom, provided that at least one of R.sub.1, R.sub.2, and R.sub.

Abstract: A photographic light-sensitive material comprising a support having provided thereon at least one silver halide emulsion layer, wherein said light-sensitive material contains:(1) a compound represented by formula (I):PWR--Time--.sub.t PUG (I)wherein PWR represents a group capable of releasing (Time--.sub.t PUG upon being reduced; PUG represents a photographically useful group; Time represents a group capable of releasing PUG through a reaction subsequent to the release from PWR in the form of --Time--.sub.t PUG; and t represents 0 or 1, and(2) a polymer comprising at least 10 repeating units derived from the same monomer and having a molecular weight of 1000 or more. The photographic light-sensitive material exhibits both high activity of a compound capable of releasing a photographically useful group during development processing and preservation stability before development processing.