US 11,724,507 B2
Ink refilling container
Noriyuki Fukasawa, Matsumoto (JP); Seigo Miyazawa, Shiojiri (JP); and Tadashi Watanabe, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Oct. 22, 2021, as Appl. No. 17/507,944.
Claims priority of application No. 2020-178059 (JP), filed on Oct. 23, 2020.
Prior Publication US 2022/0126592 A1, Apr. 28, 2022
Int. Cl. B41J 2/175 (2006.01); B41J 2/13 (2006.01)
CPC B41J 2/17506 (2013.01) [B41J 2/13 (2013.01); B41J 2/17596 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An ink refilling container, comprising:
a bottle; and
a cap configured to be put on the bottle detachably;
the bottle including
an ink outlet forming portion that includes an ink outlet, a valve provided inside the ink outlet and an outer circumferential portion, the ink outlet having a cylindrical shape, the outer circumferential portion having a first thread portion, wherein the valve is made of an elastic material and includes valve segments segmented by at least one slit extending in a radial direction from a center of the ink outlet toward an outer circumference;
the cap including
a barrel portion having a cylindrical shape and including an inner circumferential portion on which a second thread portion configured to engage with the first thread portion is formed; and
a top portion configured to face the ink outlet when the cap is put on the bottle; wherein
a protruding portion extending in a direction of a central axis of the barrel portion is provided at a center of the top portion,
a sealing portion having an annular shape is provided on the top portion outside the protruding portion in the radial direction,
a radius of the protruding portion is set to be less than a length of the slit as viewed in a direction of a central axis of the ink outlet when the valve is closed, and
in a sealed state in which the cap is in thread engagement with the bottle and in which the sealing portion seals the ink outlet, a tip end of the protruding portion penetrates the valve and is inserted in an inside of the bottle through the slit at a center region of the ink outlet as viewed in the direction of the central axis of the ink outlet.