Abstract: An ink cartridge includes a bottom wall, a first surface having a first intersection with the bottom wall, a second surface having a second intersection with at least one of the bottom wall and the first surface, an ink chamber bounded, at least in part, by the bottom wall, the first surface and the second surface, and an ink supply opening for supplying ink in the ink chamber to a location outside of the ink chamber, the ink supply opening being provided in the bottom wall. The first intersection has a first curvature and the second intersection has a second curvature and the first curvature is greater than the second curvature, and at least a portion of the first intersection is closer to the ink supply opening than at least a portion of the second intersection.

Abstract: An ink cartridge includes a case which includes a first case member. The first case member includes a first wall, and the first wall includes an air intake portion extending from the first wall in a predetermined direction. The case also includes a second case member which is connected to the first case member, and the first case member and the second case member define an ink chamber therein. The second case member includes a second wall which is opposite to the first wall, and a support member connected to an interior surface of the second wall. The ink cartridge also includes a movable member which is connected to the support member.

Abstract: A fluid cartridge includes a fluid container, with the fluid container having a fluid chamber configured to store a fluid, a first passage configured to supply a fluid from an interior of the fluid chamber to an exterior, a first flexible sheet portion with first and second surfaces, and a second flexible sheet portion with third and fourth surfaces. The first flexible sheet portion deforms when a pressure difference is greater than or equal to a first value, and the second flexible sheet portion deforms when a pressure difference is greater than or equal to a second value. The fluid cartridge may also be used in a fluid amount detection system, with a light emitting portion, and a light receiving portion, where the second flexible sheet reflects light so that the reflected light reaches the light receiving portion.

Abstract: An ink cartridge includes an ink chamber, a communication path configured to dispense ink from an interior of the ink chamber to an exterior of the ink chamber, and a valve member disposed within the communication path. The valve member is configured to selectively open and close the communication path. The ink cartridge also includes an elastic, and the elastic member has a first opening formed therethrough. Moreover, the ink cartridge includes a cap member connected to the elastic member, such that the elastic member is positioned between the cap member and the valve member, and the cap member has a second opening formed therethrough and a chamber formed therein. In addition, a portion of the chamber is aligned with the first opening.

Abstract: A liquid container includes a liquid chamber configured to store liquid, and a float positioned in the liquid chamber and configured to move according to a change in a level of a liquid surface in the liquid chamber. The float includes a liquid-retaining portion configured to retain liquid therein, and at least a portion of the liquid-retaining portion is positioned above the liquid surface when a portion of the float is positioned above the liquid surface.

Abstract: A liquid container includes an air introduction portion including an air introduction chamber, a first path through which the air introduction chamber is configured to communicate with a liquid chamber, a second path extending from the air introduction chamber and is opened to an exterior of an container body, an air communication path through which the air introduction chamber is configured to communicate with the exterior of the container body, a valve member comprising a first valve and a second valve, the valve member being movable, such that when the first valve closes the first path the second valve opens the second path, and when the second valve closes the second path the first valve opens the first path, and an urging member configured to urge the valve member in such a direction that the first valve closes the first path and the second valve opens the second path.

Abstract: An ink cartridge has an ink tank in which the ink is stored, and a shutter mechanism which is arranged in the ink tank. The shutter mechanism includes a lever which is supported swingably and which has one end provided with a shutter and the other end provided with a float. The mass and the volume of the float are set so that the first direction, in which the lever moves by the buoyancy and the gravity generated when the entire shutter mechanism is positioned in the ink, is opposite to the second direction in which the lever moves by the buoyancy and the gravity when a part of the float protrudes from the ink liquid surface. A residual amount of an ink is indicated without being excessively affected by any disturbance such as the surface tension of the ink.

Abstract: A method of forming a cartridge includes the steps of positioning a movable member within a chamber, enclosing the chamber, and dispensing a liquid within at least a portion of the chamber. The method also includes the steps of positioning a first portion of the enclosed chamber within a first case member, positioning a second portion of the enclosed chamber within a second case member, and bonding the first case member to the second case member.

Abstract: An ink cartridge includes a particular wall, a protruding member extending from the particular wall in a particular direction, a protrusion extending from the particular wall in the particular direction, and an ink chamber configured to store ink therein. The ink cartridge also includes a translucent portion defining an enclosure, an ink supply portion configured to supply ink from an interior of the ink chamber to an exterior of the ink chamber, in which the ink supply portion and the translucent portion are each positioned between the protrusion and the protruding member. The ink cartridge further includes a signal blocking member positioned within the enclosure. Moreover, the signal blocking member is configured to move within the enclosure based at least on an amount of ink disposed within the ink chamber, and the signal blocking member is sandwiched between the at least one pair of wall surfaces.

Abstract: An ink cartridge includes a first surface, second surface opposite the first surface, an ink chamber, and a grip part extending from the second surface. The ink cartridge includes a first communication chamber extending from the ink chamber toward the first surface, a first valve device disposed within the first communication chamber, a second communication chamber extending from the ink chamber toward the first surface, and a second valve device disposed within the second communication chamber.

Abstract: An ink cartridge includes a case, and the case includes a first case member. The first case member includes a first wall, and the first wall includes a translucent portion extending from the first wall in a predetermined direction. The translucent portion has an inner space formed therein. The case also includes a second case member connected to the first case member. The first case member and the second case member define an ink chamber therein, and the second case member includes a second wall which is opposite to the first wall, and a support member connected to an interior surface of the second wall. Moreover, the ink cartridge includes a movable member which includes a signal blocking portion. The signal blocking portion is positioned within the inner space of the translucent portion, and the movable member is connected to the support member.

Abstract: An ink cartridge includes a movable member which includes a sliding member and a float portion. The sliding member includes a signal blocking portion, and the signal blocking portion is configured to move in a first direction from a first position within a translucent portion to a second position based on the amount of ink within the ink chamber. Moreover, the float portion is operationally coupled to the sliding member, and the float portion is disposed within the ink chamber. The float portion is configured to move independent of the first portion in a second direction from a third position to a fourth position based on the amount of ink within the ink chamber. For example, the second direction may be substantially perpendicular to the first direction or may be slanted with respect to the first direction.

Abstract: An ink cartridge includes a cartridge case enclosing an ink chamber; an ink supply path extending from the ink chamber to an exterior of the ink cartridge; an ink filling path extending from the ink chamber to an area outside of the ink chamber; and a plug member provided in the ink filling path, the plug member sealing the ink filling path. The ink filling path adjoins the area outside of the ink chamber at a location enclosed by the cartridge case.

Abstract: An ink cartridge includes a particular wall, a protruding member extending from the particular wall in a particular direction, a protrusion extending from the particular wall in the particular direction, and an ink chamber configured to store ink therein. The ink cartridge also includes a translucent portion defining an enclosure, an ink supply portion configured to supply ink from an interior of the ink chamber to an exterior of the ink chamber, in which the ink supply portion and the translucent portion are each positioned between the protrusion and the protruding member. The ink cartridge further includes a signal blocking member positioned within the enclosure. Moreover, the signal blocking member is configured to move within the enclosure based at least on an amount of ink disposed within the ink chamber, and the signal blocking member is sandwiched between the at least one pair of wall surfaces.

Abstract: An ink cartridge includes a cartridge case enclosing an ink chamber; a path extending from the ink chamber to an exterior of the ink cartridge; a valve member provided in the path, the valve member having a first state in which communication between the ink chamber and the exterior of the ink cartridge along the path is permitted and a second state in which communication between the ink chamber and the exterior of the ink cartridge along the path is prevented; and an urging member provided on an ink chamber-side of the valve member in the path, the urging member being capable of urging the valve member along the path toward the exterior of the cartridge. The urging member is formed of a resin or rubber material having elasticity; and when the valve member is in the first state, the urging member is compressed in a direction of the path.

Abstract: An ink cartridge includes a cartridge case enclosing an ink chamber; and a path extending from the ink chamber to an exterior of the ink cartridge. The path varies in diameter at different locations along the path; a first diameter of the path in one or more narrow sections is smaller than diameters in all other sections of the path; and the path has a polygonal cross sectional shape in at least one of the narrow sections.

Abstract: An ink cartridge includes a cartridge case enclosing an ink chamber; a path extending from the ink chamber to an exterior of the ink cartridge; a valve member provided in the path, the valve member having a first state in which communication between the ink chamber and the exterior of the ink cartridge along the path is permitted and a second state in which communication between the ink chamber and the exterior of the ink cartridge along the path is prevented; and an extraction receiving member comprising an insertion port that forms a portion of the path, the extraction receiving member being capable of receiving a hollow ink extraction member of an inkjet recording device when the ink cartridge is installed in the inkjet recording device.

Abstract: An ink cartridge includes a cartridge case enclosing an ink chamber; a path extending from the ink chamber to an exterior of the ink cartridge; a valve member provided in the path, the valve member having a first state in which communication between the ink chamber and the exterior of the ink cartridge along the path is permitted and a second state in which communication between the ink chamber and the exterior of the ink cartridge along the path is prevented; an urging member provided in the path, the urging member being capable of urging the valve member; a path chamber at least partially enclosed by a path wall through which the path extends, at least a portion of the urging member being situated in the path chamber; and a sliding member at least partially interposed between the urging member and the path wall.

Abstract: An ink cartridge includes a case having an ink chamber for storing ink, and a face that faces an exterior of the case and has a first opening formed therethrough, and a wall comprising a chamber formed therein. The wall extends from a portion of the face, and the portion surrounds the first opening. The wall supplies ink from the ink chamber to the exterior of the case via the chamber. The ink cartridge also has a cap having a second opening formed therethrough. The cap has an inner surface covering an outer surface of the wall, and a groove formed in the inner surface of the cap and extending to the second opening. The chamber is in fluid communication with the exterior of the case via the second opening.

Abstract: An ink cartridge includes an ink chamber including a wall, a translucent portion positioned at the wall, in which the translucent portion has an inner space formed therein, and a movable member. The movable member includes a first portion disposed within the inner space of the translucent member, and the first portion includes a first protrusion portion formed on a first surface of the first portion. The movable member also includes a second portion disposed within the ink chamber, and a portion of the first portion of the movable member has a surface having a first surface roughness, and portion of the second portion of the movable member has a surface with a second surface roughness. Moreover, the first surface roughness is greater than the second surface roughness, and the first protrusion portion extends further towards a first interior surface of the translucent portion than the portion of the first portion having the first surface roughness.