Abstract: A photographic photosensitive element containing copolymers comprising(a) 30 to 70 mole % of the recurring unit represented by the formula (I) ##STR1## wherein R.sub.1 is a hydrogen atom or a methyl group; and (b) 70 to 30 mole % of the recurring unit represented by the formula (II) ##STR2## wherein R.sub.2 is a hydrogen atom or a methyl group and M is selected from the group consisting of hydrogen, lithium, sodium, potassium and NH.sub.4 ; in the most upper layer of the element, suitable for processing at temperatures of at least about 27.degree. C. to form an image.

Abstract: A process for producing an image which comprises the steps of:(1) applying to the surface of a substrate the surface of a photosensitive layer, the other surface of the photosensitive layer being adhered to a substantially transparent film support which is soluble or dispersible in a developer consisting essentially of a liquid capable of substantially dissolving or dispersing therein the areas of the layer other than those having a polymeric image produced by imagewise exposure in the step (2) below;(2) exposing the photosensitive layer, imagewise, to actinic radiation to form a polymeric image in the layer; and(3) washing away with the developer the film support and the areas of the layer other than those having the polymeric image to form an image of a polymeric material on the substrate.

Abstract: A print-out image can be produced with certain internally photosensitive silver halide materials by a high intensity exposure to provide a print-out image that is resistant to background print-up under ambient illumination. The photographic silver halide material with which the process is useful comprises photosensitive silver halide grains in which the sensitivity sites where a latent image can be formed on light exposure are predominantly inside the grains. Also, at least one electron-accepting compound having a polarographic reduction potential within the range of about -0.8 volt to about -0.01 volt is required on the photosensitive silver halide in the process. The photosensitive silver halide is imagewise exposed to illumination having an intensity greater than about 3 watts per square centimeter. Following imagewise exposure, a print-out image can be observed; if the exposed element is not exposed to ambient light, the print-out image can be intensified by developing in a surface developer.

Abstract: Silver-precipitating nuclei are prepared by partially oxidizing a stannous salt reducing agent and then reducing a noble metal salt or complex with said reducing agent.