Developing Latent Image Using Radiant Energy Or Heat Patents (Class 430/336)
  • Patent number: 4320039
    Abstract: A heat-sensitive recording composition with an improved image stability comprises 3-(N-methylcyclohexylamino)-6-methyl-7-anilinofluorane, 4,4'-isopropylidenediphenol capable of color-developing the fluorane through reaction by heating, fatty acid amide as a sensitizer and water-insoluble modified phenol resin having a softening point of 80.degree. to 190.degree. C., where at least 20% by weight of N-monosubstituted fatty acid amide is contained on the basis of total fatty acid amide, and 5 to 50% by weight of the water-insoluble, modified phenol resin is contained on the basis of the 4,4'-isopropylidenediphenol.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: March 16, 1982
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Sadao Morishita, Fumio Okumura, Masahiro Higuchi, Masahiro Miyauchi, Syun Kamei
  • Patent number: 4318977
    Abstract: There is disclosed an image-forming composition and element comprising a cobalt(III) complex containing amine ligands, an aromatic dialdehyde which forms, in the presence of reduction products of the complex, a reducing agent for the complex, and an organic oxidizing agent to improve the image properties of the composition.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: March 9, 1982
    Assignee: Eastman Kodak Company
    Inventor: Thap DoMinh
  • Patent number: 4308341
    Abstract: There are disclosed an imaging composition, element and method featuring an aromatic dialdehyde that reacts with an exposure-generated amine to form a dye. The photographic speed of the reaction is improved by incorporating into the composition an imide capable of providing an ##STR1## moiety when heated.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: December 29, 1981
    Assignee: Eastman Kodak Company
    Inventor: Thap DoMinh
  • Patent number: 4288531
    Abstract: An imaging element which relies upon an aromatic dialdehyde to produce a dye provides improved maximum neutral densities when certain polymers are superimposed over the element. Such polymers seal the element to reduce loss of the dialdehyde during development. An imaging method is also disclosed.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: September 8, 1981
    Assignee: Eastman Kodak Company
    Inventors: Anthony Adin, Richard C. Sutton, Joseph A. Verdone
  • Patent number: 4252884
    Abstract: Negative-working diazography material is comprised of (i) at least one diazonium compound, (ii) at least one acid labile enolic, preferably phenolic blocked-coupler adapted to be converted in the presence of acid to an active azo-coupling component, and (iii) at least one light-sensitive acid progenitor. The diazonium compound can itself concurrently function as the acid progenitor, e.g., when complexed with a Lewis acid. Upon imagewise exposure to light, acid catalyst is photochemically liberated, thus unblocking coupler molecules such that dye image forms under alkaline developing conditions only where the material has been irradiated.
    Type: Grant
    Filed: August 14, 1979
    Date of Patent: February 24, 1981
    Assignee: James River Graphics, Inc.
    Inventor: Everett W. Bennett
  • Patent number: 4247613
    Abstract: A process is disclosed for increasing the radiation sensitivity of a layer containing a polyacetylenic material while at the same time extending its radiation sensitivity towards longer wavelengths. The process comprises applying a substantially uniform electric field across the polyacetylenic containing layer and imagewise exposing the layer while the electric field is uniformly applied. Novel elements capable of recording images from two different portions of the electromagnetic spectrum are also disclosed.
    Type: Grant
    Filed: July 23, 1976
    Date of Patent: January 27, 1981
    Assignee: Eastman Kodak Company
    Inventor: Robert J. Ott
  • Patent number: 4247625
    Abstract: An imaging composition and element are disclosed wherein an aromatic dialdehyde reacts with amines generated in response to activating radiation. Improved binders are used to insure sufficient retention of the volatile dialdehyde prior to imaging.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: January 27, 1981
    Assignee: Eastman Kodak Company
    Inventors: George L. Fletcher, Wojciech M. Przezdziecki, John C. Wilson, Paul D. Yacobucci, Richard C. Van Hanehem
  • Patent number: 4235957
    Abstract: In a dry physical development photothermographic element for a dry thermal silver-dye bleach process wherein the element comprises a silver halide complexing concentration of a silver halide complexing agent improvements are provided when the complexing agent is an organic ammonium chloride, bromide or iodide. After imagewise exposure of the element, a dye image can be produced by uniformly heating the element. Improvements are also produced by providing a dry activator element for producing a dye image in a separate photographic element by means of a dry physical development thermal dye-bleach process, wherein the activator element comprises a support having thereon a layer comprising a synthetic hydrophobic polymeric binder, a silver halide complexing concentration of a silver halide complexing agent, as described, a bleachable dye and a thermal solvent.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: November 25, 1980
    Assignee: Eastman Kodak Company
    Inventors: Carl F. Kohrt, Roland G. Willis
  • Patent number: 4220708
    Abstract: Photochromic compounds are disclosed which are 3-furyl or 3-thienyl alkylidene succinic anhydrides or the corresponding succinimides. The compounds undergo reversible photocyclization on exposure to U.V. light in high yield and their cyclic forms are deeply colored making them suitable for a wide range of recording and display devices.
    Type: Grant
    Filed: October 27, 1977
    Date of Patent: September 2, 1980
    Inventor: Harold G. Heller
  • Patent number: 4201583
    Abstract: A photographic speed-increasing concentration of a certain organic photographic speed-increasing electron acceptor provides increased photographic speed in a charge-sensitive recording composite material having an ohmic resistivity of at least about 1.times.10.sup.10 ohm-cm. The charge-sensitive recording material can comprise (a) a first electrically conducting layer in association with (b) a photoconductor layer, (c) an electrically activated recording layer comprising an image-forming combination of (i) an organic, heavy metal salt oxidizing agent with (ii) a reducing agent and (iii) the described speed-increasing electron acceptor, and a binder, and (d) a second electrical conducting layer. This recording material can be room light handleable and can provide a developed image with increased speed by dry development subsequent to electrical exposure.
    Type: Grant
    Filed: November 17, 1978
    Date of Patent: May 6, 1980
    Assignee: Eastman Kodak Company
    Inventor: Raymond F. Reithel
  • Patent number: 4187105
    Abstract: A non-silver photosensitive image forming composition containing at least one substituted bis-diaryl vinylidene compound and/or at least one substituted bis-diaryl imine compound and tetraiodoethylene in a dried photosensitive layer thickness not exceeding 3 microns in layer thickness, the nature of the substitution being such that substantially any high extinction absorption peak or combination of high extinction absorption peaks is available from a family of compositions covering the range of 350 to 900 nm in wavelength, said composition being placed on a transparent or reflective substrate fitted with a compatible adhesive for the photosensitive layer not more than 0.
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: February 5, 1980
    Assignee: Horizons Research Incorporated
    Inventors: Eugene Wainer, James M. Lewis
  • Patent number: 4187108
    Abstract: In a heat developable photographic material and process for providing a dye enhanced silver image, an element comprising a support having thereon in reactive association: (A) at least one heat developable photographic layer comprising (i) photosensitive silver halide, (ii) at least one active silver halide developing agent, (iii) an activating concentration of a development activator precursor, and (iv) a polymeric binder and (B) at least one layer comprising an azoaniline dye that is bleached in the non-image areas of the described element upon development of a latent image in the layer (A) by uniformly heating, can provide an improved image. After imagewise exposure of the described heat developable material, a dye enhanced silver image can be provided by heating the element containing the described combination of layers and materials.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: February 5, 1980
    Assignee: Eastman Kodak Company
    Inventor: Roland G. Willis
  • Patent number: 4184874
    Abstract: A photosensitive composition containing a .beta.-diketonato-metal chelate compound as an image-forming material with or without a sensitizer, and suitable for use as a direct print-out image recording material, a photochromic material, a heat-developable image recording material or a heat-developable and photo-fixable image recording material.
    Type: Grant
    Filed: February 5, 1975
    Date of Patent: January 22, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Keiji Takeda