US 12,319,065 B2
Ink refill container
Tadahiro Mizutani, Shiojiri (JP); Yoshihiro Koizumi, Shiojiri (JP); Taku Ishizawa, Matsumoto (JP); Shun Oya, Kiso-machi (JP); Tadashi Watanabe, Matsumoto (JP); and Seigo Miyazawa, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Mar. 28, 2023, as Appl. No. 18/127,048.
Claims priority of application No. 2022-053043 (JP), filed on Mar. 29, 2022; and application No. 2022-207876 (JP), filed on Dec. 26, 2022.
Prior Publication US 2023/0311522 A1, Oct. 5, 2023
Int. Cl. B41J 2/175 (2006.01)
CPC B41J 2/17506 (2013.01) [B41J 2/17596 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An ink refill container for refilling a printer having an ink inlet flow-path member with ink, the ink refill container comprising:
a container body portion configured to store ink; and
an ink-outlet forming portion coupled to the container body portion and having a cylindrical portion forming an ink outlet,
the ink-outlet forming portion including:
a valve disposed in the cylindrical portion, the valve being configured to be opened by the ink inlet flow-path member inserted in the cylindrical portion and closed by withdrawal of the ink inlet flow-path member from the cylindrical portion;
a sealing member disposed at the ink outlet, the sealing member configured and arranged to be in contact with the valve in a closed state of the valve;
a holder member configured to hold at least one of the valve and the sealing member; and
a fixing portion configured to fix the holder member to the cylindrical portion, wherein
the fixing portion includes a first engagement portion between the holder member and an inner circumferential surface of the cylindrical portion,
the holder member includes a second engagement portion disposed in an inner circumferential surface of the holder member to be engaged with the sealing member, and a stopper projection that is configured to be in contact with a distal end of the sealing member to restrict the withdrawal of the sealing member, and
the stopper projection is positioned between a center of the ink outlet and a distal-end face of the cylindrical portion in a radial direction of the ink outlet when viewed in an insertion direction opposite to the withdrawal from the ink outlet.