Patents Examined by David Klein
  • Patent number: 4081279
    Abstract: Certain radiation sensitive quinone compounds and nitrobenzylidene dyes in photothermographic elements, compositions and processes on exposure to activating radiation, release a species which catalyzes the reduction of silver salt oxidizing agents in the presence of non-light sensitive reducing agents upon heating. The elements, after imagewise exposure, are heated to develop the image.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: March 28, 1978
    Assignee: Eastman Kodak Company
    Inventors: Charles A. Goffe, deceased, Donald W. Heseltine, Robert E. Bernard
  • Patent number: 4081274
    Abstract: An imaging member comprising a first layer of electrically active charge transport material contained on a supporting substrate, a photoconductive layer overlying said active layer, and a second layer of electrically active charge transport material overlying said photoconductive layer, said photoconductive layer exhibiting the capability of photogeneration of charge carriers and injection of said charge carriers, one of said electrically active layers which comprises an electrically inactive resinous material made electrically active by the addition of certain activating compounds thereto exhibits the capability of facile hole injection and transport and the other electrically active layer exhibits the capability of facile electron injection and transport.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: March 28, 1978
    Assignee: Xerox Corporation
    Inventor: Anthony M. Horgan
  • Patent number: 4081309
    Abstract: There are disclosed various embodiments of a composite web of pressure sensitive labels, method and apparatus for making such embodiments of the composite web, and method and apparatus by which a composite web of labels is advanced and by which labels are successively printed and applied to merchandise.
    Type: Grant
    Filed: August 19, 1976
    Date of Patent: March 28, 1978
    Assignee: Monarch Marking Systems, Inc.
    Inventor: William A. Jenkins
  • Patent number: 4081600
    Abstract: Improvements are disclosed in the conventional process for the laminated packaging of etched circuitry consisting of:(1) A unitized form tool which is produced by photomasking a metal plate, with the same pattern master transparency that is used for producing the photoetched circuitry, followed by chemical milling of the exposed areas to a depth equal to the thickness of the circuitry,(2) the manufacturer's low pressure dwell cycle in the press for prepreg containing epoxy resin or polyimide resin is for either resin changed to 210.+-. 15 secs. at 10.+-. 1 psi and 340.degree. F.
    Type: Grant
    Filed: July 28, 1976
    Date of Patent: March 28, 1978
    Assignee: Buss Systems, Inc.
    Inventors: Joseph A. Kueneman, Kenneth W. Nestor, Adolph J. Miera
  • Patent number: 4081275
    Abstract: A photographic film unit comprises a support having coated thereon at least one photosensitive silver halide emulsion, said layer having associated therewith a dye image-providing material, a dye image-receiving layer, means for discharging an alkaline processing composition within the film unit and at least one layer containing at least one para-nitrobenzylidene dye-forming compound. Some of the para-nitrobenzylidene dye-forming compounds are a dark color at moderately and highly alkaline conditions and are colorless at neutral or only slightly alkaline conditions such as at ambient conditions.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: March 28, 1978
    Assignee: Eastman Kodak Company
    Inventors: Derek Davis Chapman, Thomas Irving Abbott
  • Patent number: 4080207
    Abstract: Heterocyclic N-(acylhydrazinophenyl)thioamide nucleating agents are disclosed as well as radiation-sensitive compositions and elements containing such nucleating agents in combination with silver halide grains capable of forming an internal latent image. The elements can be used to form direct-positive photographic images. Dye image transfer photographic elements are specifically contemplated.
    Type: Grant
    Filed: June 29, 1976
    Date of Patent: March 21, 1978
    Assignee: Eastman Kodak Company
    Inventors: Ronald E. Leone, James K. Elwood
  • Patent number: 4080210
    Abstract: A method and apparatus for preparing uniformly-sized particles wherein a first liquid reactant is chemically reacted with a second liquid reactant to form precipitated particles of substantially uniform particle size which comprises forming substantially uniformly-sized droplets of one of said reactants and directing said droplets against the falling flow of the other of said reactants.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: March 21, 1978
    Assignee: Shoei Chemical Incorporated
    Inventors: Eiichi Asada, Hiromu Sasaki, Toshio Matsuhashi
  • Patent number: 4080211
    Abstract: A process of making a color photographic material comprising a support and a layer comprising gelatin and as a color-coupling agent a water-insoluble homopolymer of a solid water-insoluble ethylenically unsaturated color coupling monomer or a water-insoluble copolymer of said monomer with a water-insoluble ethylenically unsaturated monomer, wherein the color-coupling agent is made by:Polymerizing an emulsion in water of a solution of a solid water-insoluble ethylenically unsaturated color coupling monomer capable of undergoing free radical addition polymerization at a temperature below the melting point of said monomer or a mixture thereof with a water-insoluble ethylenically unsaturated monomer, said solution being in a solvent for said monomer selected from the group consisting of organic solvents substantially inert with respect to said color coupling monomer and the free radical polymerization products thereof, liquid water-insoluble copolymerizable monomers and mixtures of such organic solvents and such
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: March 21, 1978
    Assignee: AGFA-GEVAERT N.V.
    Inventors: August Jean Van Paesschen, Jan Jozef Priem
  • Patent number: 4080206
    Abstract: Diffusion transfer products and processes are disclosed wherein the processing composition includes, as the viscosity increasing component thereof, a polymer containing recurring groups of the formula: ##STR1## wherein R is hydrogen, alkyl or halogen; R.sub.1 is alkyl; R.sub.2 and R.sub.3 each are alkyl, aryl or alkaryl or R.sub.2 and R.sub.3 together may comprise an alkylene group to form a heterocyclic ring with the nitrogen.
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: March 21, 1978
    Assignee: Polaroid Corporation
    Inventors: Henry S. Kolesinski, Lloyd D. Taylor
  • Patent number: 4078925
    Abstract: An imaging member comprising a first layer of electrically active charge transport material contained on a supporting substrate, a photoconductive layer overlying said active layer, and a second layer of electrically active charge transport material overlying said photoconductive layer, said photoconductive layer exhibiting the capability of photogeneration of charge carriers and injection of said charge carriers, one of said electrically active layers which comprises an electrically inactive resinous material made electrically active by the addition of certain activating compounds thereto exhibits the capability of facile hole injection and transport and the other electrically active layer exhibits the capability of facile electron injection and transport.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: March 14, 1978
    Assignee: Xerox Corporation
    Inventor: Anthony M. Horgan
  • Patent number: 4078929
    Abstract: A charge pattern of a single polarity and having at least three different levels of potential is developed in two colors by utilizing relatively negatively charged toner particles of one color and relatively positively charged toner particles of a second color.
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: March 14, 1978
    Assignee: Xerox Corporation
    Inventor: Robert W. Gundlach
  • Patent number: 4078958
    Abstract: Method of manufacture of a hand-towel strip to be used in roll form in an automatic distributor with re-winding of the used portion, wherein a composite web comprising a flexible grid covered on each face with a layer of cellulose wadding, is dry creped and said creping is completely removed by stretching the composite web to a length superior to its initial length.
    Type: Grant
    Filed: August 2, 1976
    Date of Patent: March 14, 1978
    Assignee: Cie des Ets. de la Risle-Papeteries de Pont-Audemer
    Inventor: Claude Patin
  • Patent number: 4076530
    Abstract: A method for producing an image comprising image-wise exposing a light-sensitive layer containing a sensitizing agent and an image forming compound which can be transferred at non-exposed areas to an image receiving layer upon heating at about 80.degree. to about 200.degree. C, and which can be changed to a non-transferable compound at exposed areas, contacting the light-sensitive layer with the image receiving layer containing a compound which forms a colored image upon reaction with the image forming compound, and heating the light-sensitive layer to transfer the image forming compound to the image receiving layer at non-exposed areas, wherein the image receiving layer comprises an organic tellurium compound and a binder formed on a support.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: February 28, 1978
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Takeda, Kenji Matsumoto, Hiroshi Tamura, Masayoshi Nagata, Masayoshi Tsuboi
  • Patent number: 4076527
    Abstract: Photosensitive composition for use in photoelectrophoretic imaging systems. The particulate component of this composition includes vanadyl phthalocyanine pigment particles which have been treated with a phenazine-type dye and a mixture of polymeric materials consisting essentially of at least one polymer having structural units of the formula ##STR1## WHEREIN Z is a pendant group of the formula ##STR2## X is a substituent substantially incapable of withdrawing electrons from the electron rich pyridinyl moiety;m is a whole number from 0 to 3; andn is a whole number in excess of 25;And, at least one polymer having structural units of the formula ##STR3## wherein X is vinyl, alpha alkyl substituted vinyl, or alkyl of 1 to 4 carbon atoms, andY is vinyl, alpha alkyl substituted vinyl or alkyl of 1 to 4 carbon atoms with the proviso that when only one of either X or Y is vinyl or alpha alkyl substituted vinyl per structural unit.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: February 28, 1978
    Assignee: Xerox Corporation
    Inventor: Richard H. Nealy
  • Patent number: 4076534
    Abstract: A heat developable light-sensitive material comprising a support having thereon at least one light-sensitive layer containing (1) an oxidation-reduction image-forming combination of (a) a silver salt oxidizing agent and (b) a reducing agent and (2) a catalytic amount of a light-sensitive silver halide or a compound capable of reacting with the silver salt (a) to form a light-sensitive silver halide, the light-sensitive layer further containing (3) at least one specific phthalazinone compound. The development of the above light-sensitive material is carried out simply by heating the material at a temperature of about 90.degree. to 180.degree. C. for 1 to 60 seconds after imagewise exposure. An image of black tone can be obtained without contaminating the developing machine.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: February 28, 1978
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasuhiro Noguchi, Nobuyoshi Sekikawa, Kenji Sashihara, Takao Masuda
  • Patent number: 4076528
    Abstract: A photoconductive member for xerographic applications comprising a mixture of particles of at least two photoconductive pigments capable of generating and injecting holes and electrons dispersed in an insulating binder, capable of transporting holes and electrons in response to imagewise radiation. The photoconductors which are preferred also have a coefficient of absorption between 1/L and 8/L wherein L is the thickness of the photoconductive member in microns. The photoconductive member thus formed is capable of continuous tone reproduction and has improved xerographic characteristics. In a particularly preferred embodiment, one of the photoconductive materials is cadmium sulfoselenide.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: February 28, 1978
    Assignee: Xerox Corporation
    Inventors: Lloyd F. Bean, Robert W. Gundlach
  • Patent number: 4075012
    Abstract: Method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group. Copolymers prepared according to this method can be represented by the following formula: ##STR1## WHEREIN R is hydrogen or methyl;R' is hydrogen or methyl;R" is hydrogen or methyl;R'" is alkyl of 1-10 carbon atoms;R'.sup.v is selected from the group consisting of --NO.sub.2, halogen, --CN and --CF.sub.3 ;X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl of 1-4 carbon atoms and phenyl;Z is oxygen or dicyanomethylene;a and b can range from 0-4; andn and m can range from about 5 to about 95 percent.The polymeric compositions prepared according to this method are suitable for use in electrophotography either alone as the primary photoresponsive entity or in combination with other photoconductive materials.
    Type: Grant
    Filed: August 20, 1976
    Date of Patent: February 21, 1978
    Assignee: Xerox Corporation
    Inventors: Sam R. Turner, Milan Stolka
  • Patent number: 4075017
    Abstract: A photothermographic element comprises a combination of certain energy sensitive organic dyes capable of forming or destroying an active spcies upon selective exposure to actinic radiation to give a positive or negative image after heat development of the element. The element also comprises an oxidation-reduction image-forming composition comprising a silver salt oxidizing agent and a non-radiation sensitive organic reducing agent.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: February 21, 1978
    Assignee: Eastman Kodak Company
    Inventors: Charles A. Goffe, deceased, Donald W. Heseltine
  • Patent number: 4075013
    Abstract: A method for forming an electrophotographic imaging member comprising electrochemically depositing amorphous selenium on a conductive substrate while simultaneously illuminating the substrate with electromagnetic radiation through a periodic spatial light modulating means. The deposited selenium layer has a periodically varying thickness. The selenium layer is then overcoated with a layer of a charge carrier transport material which is capable of transporting at least one species of charge carrier. The resulting imaging member has extended range and solid area reproduction capability.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: February 21, 1978
    Inventors: Anthony T. Ward, Aleksandar Damjanovic, Michael L. Hair
  • Patent number: 4073649
    Abstract: An improved process is given whereby an imaging surface is treated with compositions which include dicarboxylic acid bis-amides.
    Type: Grant
    Filed: June 3, 1976
    Date of Patent: February 14, 1978
    Assignee: Xerox Corporation
    Inventors: Charles G. Scouten, Willard C. Hamilton