The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2026
Filed:
Apr. 15, 2024
Seiko Epson Corporation, Tokyo, JP;
Kazuhide Nakamura, Asahi-mura, JP;
Taki Hashimoto, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A plasticizing device includes a screw having a groove formation surface with a groove and rotating around a rotation axis, a barrel having an opposed surface opposed to the groove formation surface in a direction along the rotation axis, with a communication hole for the plasticization material, a heater heating the material supplied, and a case housing the screw, wherein a first through hole communicating with the groove from an opposite surface to the groove formation surface and surrounded by a wall surface is formed in the screw, the material is supplied to the groove through a supply path and the first through hole, and a space is provided between an entrance of the first through hole and a material feed port provided in a terminal end portion closer to the screw of a terminal end of the supply path in the direction along the rotation axis.