Abstract: An imaging sheet useful in forming images on plain paper, said sheet comprising a support having a plurality of photosensitive microcapsules and a developer-containing resin on the surface thereof, said microcapsules and said developer-containing resin being present in the same layer or in contiguous layers on the surface of said support, said microcapsules containing an internal phase which includes a photosensitive composition which changes in viscosity in response to exposure to actinic radiation and a color former which is capable of reacting with said developer and forming a visible dye image, said imaging sheet being useful in forming images by a process which comprises image-wise exposing said imaging sheet to actinic radiation, assembling said imaging sheet with a sheet of plain paper, heating said assembly, subjecting the assembly to a uniform rupture and transfer force, and separating said imaging sheet from said paper such that said image areas are area-wise transferred to said plain paper.

Abstract: The present invention relates to an image recording process which comprises a step of (i) imagewise exposing a layer containing at least silver halide of an image recording material comprising (a) silver halide, (b) a reducing agent capable of developing silver halide, (c) a photopolymerization sensitizing dye capable of being reduced into a leuco substance by said reducing agent, and (d) a polymerizable vinyl monomer, to light to form a latent image, a step of (ii) uniformly heating said recording material to form a photopolymerization sensitizing dye image in a part corresponding to said latent image, and thereafter a step of (iii) uniformly exposing a layer containing at least said formed photopolymerization sensitizing dye image and said polymerizable vinyl monomer to light to form a polymer image in the part where said photopolymerization sensitizing dye image is present, by photopolymerization.

Abstract: An image forming method which comprises copying an original on a photosensitive material employing a direct reversal photographic emulsion is disclosed. The method comprises conducting ordinary exposure when the original image is a positive image and conducting exposure at high illuminance when the original image is a negative image. Thereby, it is possible to obtain a direct positive image from either the original positive or original negative image. The process is greatly advantageous with respect to forming positive images since the process can be utilized to obtain positive images regardless whether the original image is positive or negative.

Abstract: Photographic materials which comprise, on a base, at least one layer containing an azo dyestuff of the formula ##STR1## in which R.sub.1 is hydrogen, an alkylsulfone, halogen, cyano or nitro, R.sub.2 is hydrogen, halogen, cyano or nitro, R.sub.3 is hydrogen, alkyl, halogen, cyano or nitro, B.sub.1 is an aromatic ring system, K.sub.1 is an aromatic amine and m.sub.1 is 1 or 2.

Abstract: A transfer imaging system is disclosed wherein images are formed by image-wise exposing a layer comprising a chromogenic material and pressure rupturable capsules containing, as an internal phase, a photosensitive composition. In a preferred embodiment, the chromogenic material is encapsulated with the photosensitive composition. Upon exposure and capsule rupture the chromogenic material is image-wise transferrable to a developer or copy sheet where the chromogenic material reacts with a developer to form an image. Preferred systems are sensitive to U.V. or blue light in the wavelength range of 380 to 480 nm.

Abstract: An imaging system in which images are formed by image-wise exposing a layer containing a chromogenic material and a photosensitive composition in which at least the photosensitive composition is encapsulated in a layer of pressure rupturable capsules. Exposure and capsule rupture renders the chromogenic material image-wise accessible to the developer for a patterned image forming reaction.

Abstract: An imaging material in which images are formed by exposing a sheet having on a surface a layer of microcapsules containing a radiation sensitive internal phase, and rupturing the microcapsules; wherein images in the form of transparent windows are formed in an opaque image-receiving layer containing a light-scattering pigment by rendering the pigment transparent with the internal phase released from the ruptured microcapsules.

Abstract: A photosetting microcapsule containing a photosetting resin and a photopolymerization initiator can be controlled in rupture thereof. By utilizing such characteristics of said microcapsule and by using in combination said photosetting microcapsules containing a reactant such as an electron donative compound and the microcapsules containing a co-reactant such as an electron receptive compound capable of forming a colored material by reacting with said reactant or finely powdered co-reactant per se, there is provided a photo- and pressure-sensitive recording sheet which is capable of copying even a positive type original to provide a copy or copies with excellent keeping quality without causing any coloration or discoloration in the portion other than the characters, etc., of the original.

Abstract: A capsular imaging system wherein the imaging material comprises a support coated on one surface with a layer of capsules containing, as an internal phase, a radiation sensitive composition and a decolorizing agent; images are formed by a dry process wherein the aforesaid sheet is image-wise exposed; exposure of the sheet controls release of the decolorizing agent from the capsules which image-wise reacts with a dye layer and causes a color change. Embodiments are also disclosed in which the decolorizing agent inhibits or reverses the color forming reaction between a dye precursor and a dye developer.

Abstract: A process for forming color images which comprises providing a light absorbing dye layer or a dye containing layer on a base, at least the surface of which is composed of a transparent dye accepting polymer through which dyes are capable of thermally diffusing, imagewise exposing the dye layer or the dye containing layer to light having a high energy density such that a dye image is formed in the dye accepting polymer in the exposed area by thermal diffusion of the dye, and thereafter removing the dye or the dye containing layer in the unexposed areas.

Abstract: The invention relates to a dry transfer process which employs ultraviolet light and photosensitive materials.The transfer materials used comprise a donor complex layer (c) and a receptor layer (c1). The donor complex layer (c) comprises a carrier (1), a priming layer (2), signs or imprints (3) produced by means of a colorless color-producing material, and a barrier layer (4) which is degradable under the action of ultraviolet light. The receptor layer (c1) comprises a carrier 6 coated with a layer (5) comprising a color developer.The transferred symbols or images (7) are obtained without the physical passage of an element or of an image from the donor layer to the receptor layer; their quality is comparable to that of printed characters.

Abstract: An image-forming element is disclosed comprised of a support and a coating thereon containing a cobalt(III)complex and a compound containing a conjugated .pi. bonding system capable of forming at least a bidentate chelate with cobalt(III). The coating is predominantly free of anions which will form conjugate acids by deprotonation of a cobalt(II)complex containing the chelating compound. In one preferred form the image-forming element is radiation-sensitive. In this form the image-forming element can contain a photoactivator capable of initiating reduction of the cobalt(III)complex. An imaging process is disclosed in which the coating is exposed to actinic radiation to produce an image. Images can be recorded directly within the image-forming coating or in a separate image-recording element or layer by use of the residual cobalt(III)complex or by use of one or more of the reaction products produced by exposure.

Abstract: Radiation-cleavable nondiffusible compounds for providing a transfer dye image are comprised of a spectral sensitizing dye moiety and a diffusible image dye moiety joined to a linkage in the spectral sensitizing dye moiety which is cleaved upon absorption of radiation by the spectal sensitizing dye moiety, thereby releasing the diffusible dye. Such compounds are useful in radiation-sensitive elements and processes.