Liquid container and liquid-ejecting apparatus

Abstract

A liquid container includes a liquid-containing bag filled with liquid and having a supply port that discharges the liquid; an outer frame accommodating the liquid-containing bag; a detecting plate fixed on the liquid-containing bag for detection of a liquid-exhausted state; and at least one protrusion disposed on the outer frame. The protrusion regulates transfer of the detecting plate in a direction along which the liquid-containing bag is compressed when the amount of the liquid remaining in the liquid-containing bag becomes small, and ensures a space through which the liquid can flow in the liquid-containing bag.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements.

FIG. 1 is a longitudinal sectional view of a cartridge according to an embodiment of the invention.

FIG. 2 is a plan view of the cartridge when a cover thereof is removed.

FIG. 3 is a plan view of a case constituting the cartridge.

FIGS. 4A and 4B are enlarged views of a first protrusion and a second protrusion, respectively.

FIG. 5 is a plan view of the case having double-sided adhesive tape pieces stuck thereon.

FIG. 6 is a cross-sectional view of a first principal part of the cartridge.

FIG. 7 is a cross-sectional view of a second principal part of the cartridge.

FIG. 8 is a longitudinal sectional view of the cartridge during an out-of-ink state.

FIG. 9 is a cross-sectional view of the first principal part of the cartridge during the out-of-ink state.

FIGS. 10 is a cross-sectional view of the second principal part of the cartridge during the out-of-ink state.

FIG. 11 is an exploded perspective view of a slender cartridge according to a conventional technology.

Claims

1. A liquid container comprising: a liquid-containing bag filled with liquid and having a supply port that discharges the liquid;an outer frame accommodating the liquid-containing bag;a detecting plate fixed on the liquid-containing bag for detection of a liquid-exhausted state; andat least one protrusion disposed on the outer frame, whereinthe protrusion regulates transfer of the detecting plate in a direction along which the liquid-containing bag is compressed when the amount of the liquid remaining in the liquid-containing bag becomes small, and ensures a space through which the liquid can flow in the liquid-containing bag.

2. The liquid container according to claim 1, wherein the protrusion includes a first protrusion and a second protrusion.

3. The liquid container according to claim 2, wherein the detecting plate includes a detection projection that protrudes to the exterior of the outer frame via a window formed in the outer frame according to the inclination of the detecting plate when the liquid-containing bag is in the liquid-exhausted state;the first protrusion is more adjacent to the detection projection than the second protrusion in a first direction substantially parallel to a side end of a fixed portion of the detecting plate fixed on the liquid-containing bag, the side end having the detection projection; andthe second protrusion is more adjacent to the detection projection than the first protrusion in a second direction substantially orthogonal to the first direction.

4. The liquid container according to claim 3, wherein the first protrusion is located at a position remote from the side end of the fixed portion of the detecting plate by a distance larger than half the width of the fixed portion and smaller than or equal to three fourths of the width of the fixed portion.

5. The liquid container according to claim 3, wherein the width of the second protrusion projected in the second direction is in a range of half the width of the fixed portion of the detecting plate to four fifths of the width of the fixed portion.

6. The liquid container according to claim 3, wherein the second protrusion is inclined with respect to the second direction such that a first end of the second protrusion is more adjacent to the supply port of the liquid-containing bag than a second end of the second protrusion in the first direction and such that the second end is more adjacent to the detection projection than the first end in the second direction.

7. The liquid container according to claim 3, wherein the height of the first protrusion is smaller than the height of the second protrusion.

8. The liquid container according to claim 1, wherein the length of the detecting plate is in a range of a quarter to half the length of the liquid-containing bag.

9. The liquid container according to claim 1, further comprising: adhesive portions disposed on the outer frame for fixing the liquid-containing bag.

10. A liquid-ejecting apparatus comprising: an ejecting head for ejecting liquid;a liquid-supplying path for supplying the liquid contained in a liquid-containing bag to the ejecting head, a detecting plate being fixed on the liquid-containing bag for detection of a liquid-exhausted state; andat least one protrusion disposed at a position where the liquid-containing bag is installed, whereinthe protrusion regulates transfer of the detecting plate in a direction along which the liquid-containing bag is compressed when the amount of the liquid remaining in the liquid-containing bag becomes small, and ensures a space through which the liquid can flow in the liquid-containing bag.

11. The liquid container according to claim 2, wherein the second protrusion is located at a position remote from a front end of the detecting plate by a distance approximately larger than half of a length of the detecting plate, and approximately smaller than or equal to the length of the detecting plate.

12. The liquid container according to claim 2, wherein the second protrusion is inclined with respect to a first direction substantially parallel to a side end of a fixed portion of the detecting plate by a predetermined angle A, wherein the angle A is in a range of approximately 20° to approximately 60°.

13. The liquid container according to claim 3, wherein the first protrusion is disposed to be more remote from the detection window than the second protrusion in a lateral direction of the outer frame.

14. The liquid container according to claim 9, wherein the liquid container includes two to four adhesive portions.