Photographic materials with two-dimensionally distributed precipitation nuclei
AssigneeMitsubishi Paper Mills Limited
InventorsYasuo Tsubai, Yoshikazu Takaya, Takao Senga
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Abstract
Transfer images of high contrast, high density and high sharpness can be obtained by DTR process wherein all of the physical development nucleus particles are covered with a water permeable colloid having a thickness of at least 10 times the average diameter of the nucleus particles and all of the physical development nucleus particles are substantially two-dimensionally distributed at such intervals as capable of forming a continuous transfer developed silver.
Claims13
A photographic material free from silver halide emulsion layer for use in silver complex diffusion transfer process which comprises a support having thereon at least a non-light sensitive water permeable colloid layer containing physical development nucleus particles, wherein all of the physical development nucleus particles are covered with a non-light sensitive water permeable colloid having a thickness of at least 10 times the average diameter of the nucleus particles and all of the physical development nucleus particles are substantially two-dimensionally distributed at such intervals as capable of forming a continuous transfer developed silver.
A photographic material for use in silver complex diffusion transfer process which comprises a support having thereon a non-light sensitive water permeable colloid layer containing physical development nucleus particles and a silver halide emulsion layer between the support and the nuclei, wherein all of the physical development nucleus particles are covered with a non-light sensitive water permeable colloid having a thickness of at least 10 times the average diameter of the nucleus particles and all of the physical development nucleus particles are substantially two-dimensionally distributed at such intervals as capable of forming a continuous transfer developed silver.
A process of forming an image comprising:
- imagewise-exposing a light sensitive material comprising a support and silver halide emulsion layer which is in contact with a non-light sensitive water permeable colloid layer at the time of development with a processing solution and then developing the light sensitive material with a processing solution, wherein the silver halide emulsion layer contains up to 4 millimols/m.sup.2 of silver and is present between the support and the nuclei, all of the physical development nucleus particles are covered with a non-light sensitive water permeable colloid having a thickness of at least 10 times the average diameter of the nucleus particles and all of the physical development nucleus particles are substantially two-dimensionally distributed at such intervals as capable of forming a continuous transfer developed silver.
Dependencies are inferred from the claim text.