Patents by Inventor Tatsuhito Taniguchi

Tatsuhito Taniguchi 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).

  • Patent number: 5202219
    Abstract: The present invention provides an image receiving material used for silver complex diffusion transfer process in combination with a photosensitive material. This image receiving material comprises a support and, provided thereon at least an image receiving layer containing physical development nuclei and an uppermost layer containing substantially no physical development nuclei, wherein the uppermost layer contains at least 0.8 g/m.sup.2 of hydrophilic colloid in terms of solid content and ratio of solid content of hydrophilic colloid in the uppermost layer to solid content of hydrophilic colloid in the image receiving layer is more than 1.0. Preferably, the image receiving layer contains substantially no hardener and the uppermost layer contains a hardener.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: April 13, 1993
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Tatsuhito Taniguchi, Hiroaki Nagamatsu, Susumu Baba, Kazuhiko Sunada
  • Patent number: 5200296
    Abstract: Provided is an image receiving material for silver complex diffusion transfer process which comprises a support, an image receiving layer provided on the support and an upper layer provided on the image receiving layer wherein physical development nuclei are distributed densely in the vicinity of the surface of the support and gradually diminishing towards the upper layer and a color toning agent is contained densely in the upper layer and gradually diminishing towards the surface of the support and the physical development nuclei and the color toning agent are thus mutually distributed. The image receiving material is produced by coating on a support a hydrophilic colloid coating solution for image receiving layer which contains physical development nuclei and contains substantially no color toning agent and thereon at least one hydrophilic colloid coating solution which contains at least one color toning agent and contains substantially no physical development nuclei.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: April 6, 1993
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Hiroaki Nagamatsu, Susumu Baba, Tatsuhito Taniguchi