Patents by Inventor Tatsumi Ito

Tatsumi Ito 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).

  • Gravure printing plate with angled and offset hole pattern and smear preventing slots adjacent the holes
    Patent number: 5213034
    Abstract: A printing plate formed of a thermoplastic resin sheet for gravure printing has the holes corresponding to pixels of image information arranged in rows and columns, with the rows being at an angle to the bottom edge of the sheet. The holes in the rows are aligned in columns and adjacent columns are offset by one half of one pixel. Slots are provided next to each hole to prevent ink from smearing between adjacent holes in the columns.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: May 25, 1993
    Assignee: Sony Corporation
    Inventors: Sohichi Kuwahara, Shigeyoshi Hirashima, Tatsumi Ito