Granted Patent B2

US 12,280,601 · App. 18/434,459 · Granted Apr 22, 2025

Inventors: Tadahiro Mizutani (Shiojiri, JP); Taku Ishizawa (Matsumoto, JP); Noriyuki Fukasawa (Shiojiri, JP); Naomi Kimura (Okaya, JP); Shoma Kudo (Shiojiri, JP); Manabu Akahane (Tatsuno-machi, JP)

Assignee: SEIKO EPSON CORPORATION

B41J2/17506B41J2/17509B41J2/17523B41J2/17553B41J2/17596B41J29/13

Abstract

Claims (21)

1. An ink refill container configured to refill ink into a printer that has an ink inlet in which a needle having a flow path is arranged,

the ink refill container comprising:

an ink chamber configured to contain the ink;

an ink outlet forming portion having an ink outlet in fluid communication with the ink chamber;

a positioning portion located at a leading end face of the ink outlet forming portion, the positioning portion configured to come into contact with a part of the ink inlet;

a male threaded portion located lower than the positioning portion in a state where the ink outlet faces upward; and

a cap having a female threaded portion formed in an inner circumferential face thereof,

wherein the cap is configured to cover the ink outlet and the leading end face by screwing the female threaded portion with the male threaded portion.

2. The ink refill container according to claim 1 , further comprising a valve that is disposed in the ink outlet.

3. An ink refill container configured to refill ink into a printer that has: an ink tank chamber; a needle that communicates with the ink tank chamber to introduce the ink into the ink tank chamber; and a pair of recesses arranged on both sides across the needle,

the ink refill container comprising:

a container main body including an ink chamber configured to contain the ink;

a cylindrical portion having an ink outlet configured to allow the ink to flow out from the ink chamber;

a pair of projections extending in a center axial direction of the ink outlet and configured to be inserted into the pair of recesses;

a male threaded portion located lower than the pair of projections in a state where the ink outlet faces upward; and

a cap having a female threaded portion formed in an inner circumferential face thereof and configured to screwed with the male threaded portion,

wherein a clearance is formed between each of the pair of projections and the cylindrical portion.

4. The ink refill container according to claim 3 , wherein the cap is configured to cover the ink outlet and the pair of projections by screwing the female threaded portion with the male threaded portion.

5. The ink refill container according to claim 3 , wherein the clearance is slit-like.

6. The ink refill container according to claim 3 , further comprising a valve configured to be opened by insertion of the needle into the ink outlet and to be closed by removal of the needle from the ink outlet.

7. The ink refill container according to claim 6 , wherein the valve has at least one slit in an elastic body.

Priority Claims (4)

Continuity (6)

References Cited (186)