Silver halide photographic material

A method for obtaining an image according to the DTR-process comprising the steps of:

• information-wise exposing a photographic material comprising on a support photosensitive silver halide particles, and substantially light insensitive silver salt particles having a speed at least a factor 10 less under the same conditions of exposure and development of said photosensitive silver halide particles than said photosensitive silver halide particles and a releasing compound of formula (I) or (II) capable of image-wise releasing a sulphide or sulphide under conditions for image-wise development of said photosensitive silver halide particles to silver:
• ##STR9## wherein CARRIER represents a carrier moiety that upon reaction with either the reduced or oxidized form of a developing agent or upon reaction with silver ions is capable of releasing under the conditions of development of said photosensitive silver halide the moiety -(TIME).sub.n -S-A, -S-A or sulphide, TIME represents a timing group which releases -S-A or sulphide subsequent to the release of -(TIME).sub.n -S-A from CARRIER, A represents an organic group that renders the bond between S and A readily splittable under the development conditions of said photosensitive silver halide and n represents 0 or 1,
• contacting said information-wise exposed photographic material with an image-receiving material comprising on a support a layer containing physical development nuclei,
• developing said information-wise exposed photographic material whilst in contact with said image-receiving material in an alkaline processing solution in the presence of (a) developing agent(s) and (a) silver halide solvent(s), separating said image-receiving material from said photographic material.

A method for obtaining an image according to the DTR-process comprising the steps of:

• information-wise exposing a photographic material comprising on a support (i) photosensitive silver halide particles, (ii) substantially light insensitive silver salt particles having a speed at least a factor 10 less under the same conditions of exposure and development of said photosensitive silver halide particles than said photosensitive silver halide particles, (iii) an image receiving layer containing physical development nuclei and (iv) a releasing compound of formula (I) or (II) capable of image-wise releasing a sulphide or sulphide under conditions for image-wise development of said photosensitive silver halide particles to silver:
• ##STR11## wherein CARRIER represents a carrier moiety that upon reaction with either the reduced or oxidized form of a developing agent or upon reaction with silver ions is capable of releasing under the conditions of development of said photosensitive silver halide the moiety -(TIME).sub.n -S-A, -S-A or sulphide, TIME represents a timing group which releases -S-A or sulphide subsequent to the release of -(TIME).sub.n -S-A from CARRIER, A represents an organic group that renders the bond between S and A readily splittable under the development conditions of said photosensitive silver halide and n represents 0 or 1,
• and developing said information-wise exposed photographic material in an alkaline processing solution in the presence of (a) developing agent(s) and (a) silver halide solvent(s).

A method for preparing a lithographic printing plate according to the DTR-process comprising the steps of:

• information-wise exposing a photographic material comprising on a support photosensitive silver halide particles, and substantially light insensitive silver salt particles having a speed at least a factor 10 less under the same conditions of exposure and development of said photosensitive silver halide particles than said photosensitive silver halide particles and a releasing compound of formula (I) or (II) capable of image-wise releasing a sulphide or sulphide under conditions for image-wise development of said photosensitive silver halide particles to silver:
• ##STR12## wherein CARRIER represents a carrier moiety that upon reaction with either the reduced or oxidized form of a developing agent or upon reaction with silver ions is capable of releasing under the conditions of development of said photosensitive silver halide the moiety -(TIME).sub.n -S-A, -S-A or sulphide, TIME represents a timing group which releases -S-A or sulphide subsequent to the release of -(TIME).sub.n -S-A from CARRIER, A represents an organic group that renders the bond between S and A readily splittable under the development conditions of said photosensitive silver halide and n represents 0 or 1,
• contacting said information-wise exposed photographic material with an image-receiving material comprising on a support a layer containing physical development nuclei and having a hydrophilic surface,
• developing said information-wise exposed photographic material whilst in contact with said image-receiving material in an alkaline processing solution in the presence of (a) developing agent(s) and (a) silver halide solvent(s),
• separating said image-receiving material from said photographic material.