Patents Represented by Attorney John R. Everett

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  • Pigmented ink jet inks containing modified polysaccharide resin
    Patent number: 5753021
    Abstract: A liquid ink jet ink comprising a carrier, a pigment and a polysaccharide resin having a number average molecular weight of 500,000 to 2,500,000 is disclosed.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: May 19, 1998
    Assignee: Eastman Kodak Company
    Inventor: Thomas William Martin
  • Multiactive electrostatographic elements having a support with beads protruding on one surface
    Patent number: 5753401
    Abstract: A method of making a multiactive photoconductive elements is disclosed. The method uses a knurl free planar polymeric support having beads protruding from one surface. An element comprising such supports is also disclosed.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: May 19, 1998
    Assignee: Eastman Kodak Company
    Inventors: David Michael Woytek, Douglas Edward Garman
  • Bis?(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)acetates! charge-control agents
    Patent number: 5750715
    Abstract: Bis?(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)acetates! are disclosed. They have the general structure (I): ##STR1## R is defined in the specification.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: May 12, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields
  • Photoconductor cleaning brush to prevent formation of photoconductor scum
    Patent number: 5750307
    Abstract: A brush having synthetic fibers that are inert to paper fillers is disclosed. The brush is effective in preventing scumming on photoconductive elements.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: May 12, 1998
    Assignee: Eastman Kodak Company
    Inventors: James C. Maher, Dinesh Tyagi, John R. Locke
  • Poly?(2-(sulfonamidomethylene)-2-cyanoacetamido)phenyl acrylate! charge-control agents for electrostatographic toners and developers
    Patent number: 5750305
    Abstract: An electrostatographic toner comprising a poly?(2-(sulfonamidomethylene)-2-cyanoacetamido)phenyl acrylate! charge-control agent is disclosed.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: May 12, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields
  • Electrostatographic toners and developers containing (1,2-benzisothiazol-3-(2H)-ylidene 1,1-dioxide) acetate-terminated polymer charge-control agents
    Patent number: 5744277
    Abstract: Electrostatographic toners and developers containing (1,2-benzisothiazol-3-(2H)-ylidene 1,1-dioxide)acetate-terminated polymer charge-control agents are disclosed. The agents have the structure (I): ##STR1## wherein n can be as high as the number of hydroxyl groups in the polymer from which structure I is derived.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: April 28, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields
  • N-(2-cyanoethenyl)sulfonamides having two functionalities and toner compositions containing them
    Patent number: 5744274
    Abstract: There is provided an electrostatographic toner comprising a polymeric binder and a charge-control agent having the general structure: ##STR1## wherein A, B, R.sup.2, and R.sup.3 are defined in the specification.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: April 28, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Peter S. Alexandrovich
  • Screen-printable ink-receptive compositions
    Patent number: 5741836
    Abstract: This invention is a screen-printable ink receptive composition. It contains (a) a hydrophilic polymer and (b) a thickener and has (c) a viscosity of 10 to 1,000 poise at shear rates less than 10.degree. s.sup.-1 and exhibits (d) a shear thinning behavior defined by the following relationship:log(viscosity)=A ?log(shear rate)!wherein A represents (e) the slope of the line obtained by plotting log(viscosity) against log(shear rate) and has (f) a value of up to -0.1 when calculated over shear rates ranging from 10.degree. to 10.sup.-2 s.sup.-1.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: April 21, 1998
    Assignee: Eastman Kodak Company
    Inventors: Mary A. Krenceski, Kevin J. Swallow, Douglas Eugene Bugner, Alfred John Amell
  • (2-(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)-2-cyanoacetamido)phenyl acrylate compounds and polymers
    Patent number: 5739235
    Abstract: Novel (2-(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)-2-cyanoacetamido)-phenyl acrylates are disclosed. They are useful in making novel poly?(2-(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)-2-cyanoacetamido)phenyl acrylate! charge-control agents. The charge-control agents are useful for electrostatographic toners and developers.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: April 14, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields
  • Color pigmented ink jet ink set
    Patent number: 5738716
    Abstract: A color ink jet ink set for color printing is disclosed. The set comprises:(a) a first ink comprises a carrier and a bridged aluminum phthalocyanine pigment as a cyan colorant;(b) a second ink comprising a carrier and a quinacridone pigment as a magenta colorant; and(c) a third ink comprising a carrier and a non-benzidine yellow pigment.A fourth ink comprising pigment black 7 may also be included in the set.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: April 14, 1998
    Assignee: Eastman Kodak Company
    Inventors: Domenic Santilli, Douglas Eugene Bugner, Alexandra DeLauro Bermel, David Joseph Oldfield
  • Electrophotographic elements with generating layers containing polyester ionomers
    Patent number: 5733695
    Abstract: A multiactive electrophotographic element comprising an electrically conductive support, a photoconductive pigment containing charge generation layer and a charge transport layer wherein the charge generation layer contains a polyester-ionomer binder having a weight average molecular weight of 2,500 to 75,000 and a glass transition temperature of 20.degree. to 150.degree. C.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: March 31, 1998
    Assignee: Eastman Kodak Company
    Inventors: Michel F. Molaire, Louis Joseph Sorriero
  • Overcoated charge transporting elements and glassy solid electrolytes
    Patent number: 5731117
    Abstract: Glassy solid electrolytes and charge transporting elements including antistatic elements and charge generating elements. The charge generating element has an electrically conductive layer, a charge generating layer overlying the electrically conductive layer, and a layer of glassy solid electrolyte overlying the electrically conductive layer. The glassy solid electrolyte includes a complex of silsesquioxane and a charge carrier. The complex has a surface resistivity from about 1.times.10.sup.10 to about 1.times.10.sup.17 ohms/sq. The complex has a T.sup.2 -silicon:T.sup.3 -silicon ratio of less than 1 to 1. The complex has a ratio of carbon atoms to silicon atoms of greater than about 1.2 to 1.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: March 24, 1998
    Assignee: Eastman Kodak Company
    Inventors: Wayne Thomas Ferrar, Jane Robin Cowdery-Corvan, Edward T. Miskinis, Catherine Newell, Donald S. Rimai, Louis Joseph Sorriero, John Anthony Sinicropi, David Steven Weiss, Nicholas Zumbulyadis
  • Mixtures of low K metallized formazan dyes with symmetrical and unsymmetrical cyanine dyes
    Patent number: 5731054
    Abstract: A mixture of low k metallized formazan dye with symmetrical and unsymmetrical cyanine dyes is disclosed. The mixture is useful in optical recording layers of optical recording elements.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: March 24, 1998
    Assignee: Eastman Kodak Company
    Inventors: Derek David Chapman, Michael Paul Cunningham, Ramanuj Goswami
  • Process for the electro-oxidation of photographic solutions
    Patent number: 5725751
    Abstract: The invention concerns a process and a device for the treatment by electrolysis of used photographic solutions containing developers in an electrolytic cell comprising at least one platinum anode. The invention enables the corrosion of the platinum anode to be minimized by using an efficient quantity of antifoaming agent and keeping the pH constant at a value equal to or above 10.5 at the beginning of electrolysis. The invention enables the quantity of platinum coming from the anode in solution to be reduced.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: March 10, 1998
    Assignee: Eastman Kodak Company
    Inventor: Philippe Gerald Robert
  • Electrostatographic toners and developers containing bis ?1,2-benzisthiazol-3(2h) -ylidene 1,1-dioxide) acetates!charge-control agents
    Patent number: 5723248
    Abstract: Electrostatographic toners and developers containing bis?(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)acetate! charge-control agents are disclosed. The charge-control agents have the general structure (I): ##STR1## R is defined in the specification.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: March 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields
  • (1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide) cyanoacetate charge-control agents for electrostatographic toners
    Patent number: 5723249
    Abstract: An electrophotographic toner having polymeric binder and a (1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)cyanoacetate charge-control agent is disclosed the agent has the general structure: ##STR1## R is defined in the specification.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: March 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields
  • Ink-jet printer recording element
    Patent number: 5723211
    Abstract: An image-recording element for an ink-jet printer comprising, in the following order:(a) a substrate;(b) a solvent-absorbing gelatin layer and(c) a single image-forming layer of porous, pseudo-boehmite having an average pore radius of 10 to 80 .ANG..
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: March 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: Charles Eugene Romano, Wayne Thomas Ferrar, Jeanne Ellen Kaeding
  • Amorphous fluoropolymer coated fusing member
    Patent number: 5720703
    Abstract: A fuser member for fusing a thermoplastic resin toner image to a substrate having:(a) a rigid metal core;(b) a base cushion layer covering the metal core wherein the base cushion comprises a condensation cured polydimethylsiloxane or an addition cured silicone rubber;(c) a cured fluoroelastomer layer covering the base cushion layer;(d) an aminosilane adhesive coveting the fluoroelastomer layer; and(e) an amorphous fluoropolymer covering the aminosilane adhesive layer.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: February 24, 1998
    Assignee: Eastman Kodak Company
    Inventors: Jiann Hsing Chen, Lawrence Paul Demejo, Gary Frederick Roberts
  • (1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)methylene sulfone charge-control agents for electrostatographic toners
    Patent number: 5719001
    Abstract: Charge-control agents (1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)methylene sulfones are disclosed for use in electrostatographic toners and developers. They have the general structure: ##STR1## R and Z are defined in the specification.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: February 17, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields
  • Bis?1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide cyanoacetates! for electrostatographic toners and developers
    Patent number: 5719000
    Abstract: The invention provides bis?(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)cyanoacetates! having the general structure: ##STR1## R is defined in the specification. The compounds are useful as charge-control agents in electrostatographic toners and developers.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: February 17, 1998
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Robert D. Fields