Patents Examined by Janis Dote
  • Patent number: 5376495
    Abstract: A light-sensitive heat-sensitive recording material is disclosed, which contains microcapsules resulting from a solution containing at least one component capable of undergoing color development or achromatization as a core material of the microcapsules and a volatile solvent which has a water solubility of 10% by volume or less and has a low boiling point such that it volatilizes during a process for preparing said light-sensitive heat-sensitive recording material leaving substantially no trace of the solvent in the resulting recording material. As the microcapsules, ones having a mean particle size of 2 .mu.m or less are preferred, and ones prepared using a modified gelatin as a protective colloid are also preferred. Further, as the support of the light-sensitive heat-sensitive recording material, a polyester support filled with a white pigment can preferably be used.
    Type: Grant
    Filed: November 29, 1991
    Date of Patent: December 27, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shintaro Washizu, Jun Yamaguchi, Kazuyuki Koike, Keiichiro Ozawa, Tetsuro Fuchizawa
  • Patent number: 5366852
    Abstract: The present invention comprises methods for treating photoresists and forming photoresist relief images, including a method comprising providing a photoresist coating having a crosslinked surface layer, treating the photoresist coating with an organometallic material, and developing the photoresist coating to provide a relief image comprising an etch resistant effective amount of organometallic material.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: November 22, 1994
    Assignees: Shipley Company, Inc., Digital Equipment Corporation
    Inventors: Edward K. Pavelchek, Peter W. Freeman, John F. Bohland, Susan K. Jones, Bruce W. Dudley
  • Patent number: 5364739
    Abstract: An X-Ray sensitive composition including one or several photopolymerizable monomer or photocrosslinkable polymer systems and thermochromic substances which can be used in a dry X-Ray reproduction process. The process is based on the different dielectric constants and dielectric losses exhibited by a monomer and the corresponding polymer or a polymer and the crosslinked polymer and the reaction of certain thermochromic substances which exhibits a specific threshold temperature above which these substances change from a colorless form to a color stable form. The X-Ray sensitive element is exposed according to a pattern of X-Ray with spatial modulation providing an X-Ray image to form a latent image of polymerized or crosslinked zones and unpolymerized or non crosslinked zones.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: November 15, 1994
    Assignee: Board of Regents, The University of Texas System
    Inventor: Jean J. Robillard
  • Patent number: 5356753
    Abstract: A positive resists material for high energy-sensitive positive resists which can be developed in aqueous alkali solution, said material comprising (A) a polyhydroxystyrene resin wherein some hydroxyl groups are substituted by t-butoxycarbonyloxy groups, (B) a solution blocking agent, and (C) an onium salt, and being characterized in that said solution blocking agent contains at least one t-butoxycarbonyloxy group per molecule, said onium salt is bis(p-t-butylphenyl) iodinium trifluormethylsulfonate represented by the following formula (1): ##STR1## and the weight proportions of (A), (B), (C) are given by the relations: 0.07.ltoreq.B-.ltoreq.0.40, 0.005.ltoreq.C.ltoreq.0.15, 0.55.ltoreq.A, A+B+C=1. As the resist has low absorption at the exposure wavelength of a KrF exima laser, a fine pattern having vertical walls is easily formed.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: October 18, 1994
    Assignees: Shin-Etsu Chemical Co., Ltd., Nippon Telegraph and Telephone Corp.
    Inventors: Motoyuki Yamada, Osamu Watanabe, Akinobu Tanaka, Hiroshi Ban, Yoshio Kawai
  • Patent number: 5316892
    Abstract: A negative-working lithographic printing plate having a radiation-sensitive layer comprising a diazo resin, an acid-substituted ternary acetal polymer and an unsaturated polyester is developed with an aqueous developing composition comprising an organic solvent, an anionic surface active agent, sodium oxalate, sodium nitrate or an alkali metal tetraborate an aliphatic monocarboxylic acid, an aliphatic dicarboxylic acid and sufficient alkaline buffering system to provide an alkaline pH. The method effectively avoids problems of blinding and background sensitivity which are of critical concern in the printing art.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: May 31, 1994
    Assignee: Eastman Kodak Company
    Inventors: John E. Walls, Gary R. Miller, Raymond W. Ryan, Jr.
  • Patent number: 5310634
    Abstract: A p-phenylenediamine series color developing agent or a precursor thereof having a substituent A at the ortho-position; Substituent A: ##STR1## wherein R.sup.1 represents a hydrogen atom or an alkyl group and X represents --O--R.sup.7 or ##STR2## wherein R.sup.7 represents an alkyl group, an aryl group, or a heterocyclic ring and R.sup.8 and and R.sup.9, which may be the same or different, each represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic ring, R.sup.8 and R.sup.9 may combine with each other to form a heterocyclic ring, and a process for forming an image which comprises imagewise exposing a silver halide color photographic material and thereafter color developing the color photographic material in the presence of a p-phenylenediamine series color developing agent or a precursor thereof having the aforesaid substituent A.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: May 10, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisashi Mikoshiba, Mitsugu Tanaka, Kei Sakanoue
  • Patent number: 5035986
    Abstract: A silver halide color photographic material comprising photographic constituent layers containing at least one light-sensitive silver halide emulsion layer and at least one light-insensitive layer on a reflective support, wherein at least one of the photographic constituent layers comprises at least one dye represented by formula (I), at least one of the light-sensitive silver halide emulsion layers comprises silver halide grains substantially comprising silver chloride and the reflective support comprises 3.0 g/m.sup.2 or more of titanium oxide: ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group, an aryl group, a cyano group, --COOR.sub.5, --CONR.sub.5 R.sub.6, --COR.sub.7, --SO.sub.2 R.sub.7, --SOR.sub.7, --SO.sub.2 NR.sub.5 R.sub.6, --OR.sub.5, --NR.sub.5 R.sub.6, --NR.sub.6 COR.sub.7, --NR.sub.5 CONR.sub.5 R.sub.6 or --NR.sub.6 SO.sub.2 R.sub.7 in which R.sub.5 and R.sub.6 each represents a hydrogen atom, an alkyl group or an aryl group, R.sub.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: July 30, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Sakai, Shigeru Ohno