Patents Examined by John L. Goodrou
  • Patent number: 5885739
    Abstract: Toners comprised of a cyan toner, a magenta toner, a yellow toner, an orange toner, or a red toner, and a black toner, each of said toners being comprised of resin and pigment; and wherein the pigment for the orange toner is Orange 13, Cl 21110, Orange 34, Cl 21115, Orange 5, Cl 12075, Orange 16, Cl 21160, Orange 36, Cl 11780, Orange 46, Cl 15602, Orange 67, or Orange 69, and wherein the pigment for the red toner is Red 53:1, Cl 15585, Red 48:1, Cl 15865:1, Red 122, Cl 12370, or Red 254; and wherein said pigment for each toner is prepared by flushing said wet pigment, wherein a cyan, magenta, orange, or red and yellow pigment water wet cake is mixed with toner resin, and the water is substantially removed to generate pigmented resin, or wherein said pigment for each toner is prepared by dispersing said pigment with a polymeric alcohol.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: March 23, 1999
    Assignee: Xerox Corporation
    Inventors: Edul N. Dalal, Sue E. Blaszak, Kristen M. Natale-Hoffman, Jacques C. Bertrand, Roger N. Ciccarelli, Denise R. Bayley
  • Patent number: 5300386
    Abstract: A developer for developing an electrostatic image is disclosed which has a toner including toner particles each containing a polymer, a copolymer or a mixture thereof and from 5 to 30% by weight of a low softening point material, and each having a plurality of concavities on its surface; the toner particles being prepared by suspension polymerization. Also, an image forming method and a heat fixing method using the developer are disclosed.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: April 5, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kanbayashi, Takayuki Nagatsuka, Takashige Kasuya, Tatsuya Nakamura, Tatsuhiko Chiba
  • Patent number: 4429031
    Abstract: A color diffusion transfer photographic element is disclosed, comprising (a) a photosensitive component containing at least one photosensitive silver halide emulsion layer combined with a DRR compound, (b) a dye image receiving component and (c) an alkaline processing composition component, wherein the improvement comprises at least one of said components (a), (b), and (c) containing a compound represented by the formula (I) ##STR1## wherein R represents a substituted or unsubstituted alkyl group having from 1 to 18 carbon atoms.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: January 31, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Motohiko Tsubota, Masakazu Morigaki, Tsutomu Hamaoka, Nobutaka Ohki
  • Patent number: 4422405
    Abstract: A single magnetic brush developing unit is disposed adjacent to a photoconductive drum for applying toner thereto. Three applicator units are selectively actuatable to apply three toners of respective primary colors to the developing unit.
    Type: Grant
    Filed: November 8, 1978
    Date of Patent: December 27, 1983
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuo Kasahara, Tosio Nakahara, Hidetoshi Yano