Seiko Epson Corporation

Hideki Horiuochi

Hiroshi Kuriyama

Haruyuki Miyasaka

Youichi Kodaira

A stamp unit and a method of preparing the same are provided in which a liquid photosensitive resin is used as the base material for stamp formation and the ease with which the material is handled during transportation, storage and stamp formation is facilitated. The stamp unit uses a liquid photosensitive resin which changes from liquid to solid upon receiving rays of light as the base material for stamp face formation. The stamp unit also includes a stamp stock, a liquid resin encapsulating section which is provided on the stamp face formation side of the stamp stock and which serves to encapsulate the liquid photosensitive resin in a state in which the resin can be exposed, an injection hole having one end open to the encapsulating space of the liquid resin encapsulating section and a second end open to the exterior, and a stopping member for stopping the injection hole to seal the liquid photosensitive resin in the liquid resin encapsulating section, wherein the liquid resin encapsulating section is constructed such that at least that portion thereof which covers the stamp face can be removed after stamp face formation.

Growing community of inventors

Suwa, Japan

Hideki Horiuochi