Patents by Inventor Jean-Philippe Voirin

Jean-Philippe Voirin 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).

  • Powder for developing latent images and a method of producing the powder
    Patent number: 4514484
    Abstract: A powder suitable for developing latent magnetic images comprising magnetic particles coated with a mixture of a thermoplastic resin and a silane. A method for producing the said powder comprising hot-forming a mixture of magnetic particles, a thermoplastic resin and a silane, cooling and reducing the cooled mass to a fine powder.
    Type: Grant
    Filed: January 6, 1981
    Date of Patent: April 30, 1985
    Assignee: Compagnie Internationale Pour L'Informatique Cii/Honeywell Bull (Societe Anonyme)
    Inventors: Francois Pon, Jean-Philippe Voirin, Andre Lucan
  • Apparatus for applying solid developer particles to the recording element of a non-impact printer
    Patent number: 4492178
    Abstract: The invention relates to magnetic printers and, more particularly, to an apparatus for applying solid developer particles to the recording drum of a non-impact printer. This apparatus comprises, on the one hand, a conveyor roller (22) which brings the developer particles from a particle storage or supply tank (15) to the vicinity of the recording drum (10) and, on the other hand, a baffle plate or deflector (23) positioned between the roller (22) and the drum (10). The roller (22) is coated with magnetized strips having on their outer surfaces magnetic helicoidal lines such that on two adjacent strips the pitch of the magnetic lines of one strip is opposed to that of the other strip.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: January 8, 1985
    Assignee: Cii Honeywell Bull (Societe Anonyme)
    Inventors: Jean-Philippe Voirin, Bernard Cherbuy