Patents by Inventor Franklin Jossel

Franklin Jossel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Color electrophotographic developer system employing one carrier having a coating of resin and copper tetra-4-(octadecylsulfonomido)phthalocyanine
    Patent number: 4147540
    Abstract: A color electrophotographic process is provided which employs magenta, cyan and yellow toners, each in combination with a carrier coated with a resin containing copper tetra-4-(octadecylsulfonomido) phthalocyanine. Thus, for the first time a developer package is provided which is capable of producing prints of sharp quality employing a common carrier. The various magenta, cyan and yellow toners employed in connection with the newly provided coated carrier are also disclosed.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: April 3, 1979
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Franklin Jossel
  • Developer compositions comprising toner and carrier
    Patent number: 4078930
    Abstract: Novel developers in which the toner and carrier or toner and a carrier coating comprise substantially the same composition. Methods of using the novel developers are also disclosed.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: March 14, 1978
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Franklin Jossel
  • Yellow developer employing a coated carrier and imaging process using same
    Patent number: 4073965
    Abstract: A novel yellow developer system is provided which employs a Yellow 97 toner in combination with a carrier coated with resin containing copper tetra-4-(octadecylsulfonomido) phthalocyanine. This developer is found to yield prints of exceptional quality and provides long developer life. Processes employing this developer in a color electrophotographic process are also disclosed.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: February 14, 1978
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Franklin Jossel
  • Copper-tetra-4-(octadecylsulfonomido) phthalocyanine electrophotographic carrier
    Patent number: 4066563
    Abstract: A color electrophotographic process is provided which employs magenta, cyan and yellow toners, each in combination with a carrier coated with a resin containing copper tetra-4-(octadecylsulfonomido) phthalocyanine. Thus, for the first time a developer package is provided which is capable of producing prints of sharp quality employing a common carrier. The various magenta, cyan and yellow toners employed in connection with the newly provided coated carrier are also disclosed.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: January 3, 1978
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Franklin Jossel
  • Yellow developer employing a coated carrier
    Patent number: 4058397
    Abstract: A novel yellow developer system is provided which employs a Yellow 29 toner in combination with a carrier coated with resin containing copper tetra-4-(octadecylsulfonomido) phthalocyanine. This developer is found to yield prints of exceptional quality and provides long developer life. Processes employing this developer in a color electrophotographic process are also disclosed.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: November 15, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Franklin Jossel
  • Magenta toner with a coated carrier
    Patent number: 4057426
    Abstract: A novel magenta developer system is provided which employs a 2,9-dimethylquinacridone pigment and a resin toner in combination with a carrier coated with resin containing copper tetra-4-(octadecylsulfonomido) phthalocyanine. Thus, a magenta developer is provided for the first time which is capable of employing a coated conventional carrier, thereby simplifying the color electrophotographic process. Color electrophotographic process employing this developer are also disclosed.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: November 8, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Franklin Jossel
  • Electrostatographic imaging process
    Patent number: 4052207
    Abstract: A novel yellow electrostatographic colorant is disclosed. This colorant may be employed as an electrostatographic toner or developer material. Electrophotographic processes are disclosed employing this colorant. When employed as an electrophotographic developing material, this colorant is found to possess superior triboelectric properties among others which result in superior electrophotographic machine life than known yellow colorants.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: October 4, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Franklin Jossel
  • Yellow developer
    Patent number: 4035310
    Abstract: A novel yellow electrostatographic colorant is disclosed. This colorant may be employed as an electrostatographic toner or developer material. Electrophotographic processes are disclosed employing this colorant. When employed as an electrophotographic developing material, this colorant is found to possess superior triboelectric properties among others which result in superior electrophotographic machine life than known yellow colorants.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: July 12, 1977
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Franklin Jossel
  • Photoreceptor solvent cleaner
    Patent number: 3937665
    Abstract: A photoreceptor cleaning composition is provided which includes a solvent blend that is capable of dissolving toner polymers and paper tars. This composition cleans effectively and efficiently without damage to the photoreceptor and without leaving residue. This solvent employs a blend of halogenated hydrocarbons having specific physical and chemical properties. These compositions are superior to known cleaners by virtue of their minimizing potential for fire explosion and hazard resulting from toxicity and volatility.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: February 10, 1976
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Franklin Jossel