Abstract: A liquid discharge head including a liquid storage chamber capable of holding a liquid, a liquid communication pipe communicating with the liquid storage chamber and being configured to supply the liquid from a liquid tank to the liquid storage chamber by installing the liquid tank to the pipe to communicate with the liquid tank, a discharge port communicating with the liquid storage chamber to discharge the liquid, an electrode pair each having an outside end portion located outside the liquid storage chamber and detecting a liquid level of the liquid storage chamber, and an electric contact portion connected to the outside end portion of each of the electrode pair. The electric contact portion is located above the liquid communication pipe with a discharge port surface on which the discharge port opens taking a position facing perpendicularly downward.

Abstract: To provide an ink cartridge in which a satisfactory electrical connection with a printer main assembly can be established An ink cartridge 1 detachably mountable to a cartridge mounting portion 33 including an ink receiving tube 52, an electrical connecting portion 55 and a locking lever 58, the ink cartridge 1 includes a tube inserting portion 8 into which an ink receiving tube 52 is inserted and which is provided in a lower portion at a front surface 2c of a casing 2, an electrical contact 4 provided above the tube inserting portion 8 and electrically connectable with the electrical connecting portion 55, and an engaging portion 24 provided in a position closer to the electrical contact than to the tube inserting portion 8 and engageable with the locking lever 58.

Abstract: To provide an ink cartridge capable of accomplishing satisfactory electrical connection relative to a printer main assembly An ink cartridge 1 detachably mountable to a cartridge mounting portion 33 provided with an ink receiving tube 52 and a plurality of electrical connecting portions 55, the ink cartridge 1 including a tube inserting portion 8 into which the receiving tube 52 is insertable, a substrate 3 provided on a front side 2c in a position above the tube inserting portion 8, a plurality of electrical contacts 4 electrically connectable with the plurality of electrical connecting portions 55, the electrical contacts 4 being arranged on the substrate 3 in a direction crossing with a direction from a bottom surface 2b toward an upper surface 2a

Abstract: The ink cartridge has a communication unit for allowing an ink storage chamber to communicate with a space outside a housing. The communication unit includes a communication port formed on an outside surface of the housing, a merging channel having an end which communicates with the communication port, and a plurality of branch channels, each having an end which communicates with the merging channel and the other end which communicates with the ink storage chamber. In the branch channel, while ink flows backward, the ink flowing from the merging channel branches into the first branch channel and the second branch channel. At the same time, a ratio (Q1/Q2) between an ink flow rate in the first branch channel and an ink flow rate in the second branch channel while the ink is supplied is smaller than that while the ink flows backward.

Abstract: A liquid discharge head includes a liquid storage chamber capable of holding a liquid, a liquid communication pipe communicating with the liquid storage chamber and being configured to supply the liquid from a liquid tank to the liquid storage chamber by installing the liquid tank to the pipe to communicate with the liquid tank, a discharge port communicating with the liquid storage chamber to discharge the liquid, an electrode pair each having an outside end portion located outside the liquid storage chamber and detecting a liquid level of the liquid storage chamber, and an electric contact portion connected to the outside end portion of each of the electrode pair. The electric contact portion is located above the liquid communication pipe with a discharge port surface on which the discharge port opens taking a position facing perpendicularly downward.

Abstract: There is provided a liquid storage container capable of keeping a negative pressure therein more reliably. An ink cartridge includes a negative pressure generation unit configured to generate a negative pressure in an ink storage chamber and a filter attached to an atmosphere communication channel opening and allowing air to pass from the outside to the inside of the liquid storage chamber depending on the negative pressure in the ink storage chamber. The ink cartridge has a capillary groove configured to supply ink from a portion in which ink is stored in the ink storage chamber to the filter.

Abstract: The ink cartridge has a communication unit for allowing an ink storage chamber to communicate with a space outside a housing. The communication unit includes a communication port formed on an outside surface of the housing, a merging channel having an end which communicates with the communication port, and a plurality of branch channels, each having an end which communicates with the merging channel and the other end which communicates with the ink storage chamber. In the branch channel, while ink flows backward, the ink flowing from the merging channel branches into the first branch channel and the second branch channel. At the same time, a ratio (Q1/Q2) between an ink flow rate in the first branch channel and an ink flow rate in the second branch channel while the ink is supplied is smaller than that while the ink flows backward.

Abstract: There is provided a liquid storage container capable of keeping a negative pressure therein more reliably. An ink cartridge includes a negative pressure generation unit configured to generate a negative pressure in an ink storage chamber and a filter attached to an atmosphere communication channel opening and allowing air to pass from the outside to the inside of the liquid storage chamber depending on the negative pressure in the ink storage chamber. The ink cartridge has a capillary groove configured to supply ink from a portion in which ink is stored in the ink storage chamber to the filter.

Abstract: A ink tank includes a casing having a partition wall configured to divide from each other an absorber storage chamber for storing an absorber capable of retaining ink and an ink storage chamber for storing ink to be supplied to the absorber storage chamber, and an ink supply port provided at the bottom surface of the absorber storage chamber and configured to supply the ink in the absorber storage chamber to an outside, wherein the sectional configuration when the absorber storage chamber is cut by a plane parallel to the partition wall and passing through the ink supply port is substantially T-shaped.

Abstract: In a state in which a liquid container is mounted on a recording device, a liquid ejection head communicates with a liquid chamber through a first liquid channel and a second liquid channel, an opening of the first liquid channel at a side far from the liquid ejection head and an opening of the second liquid channel at a side far from the liquid ejection head are made at the liquid chamber, the opening of the first liquid channel is located at an upper side in a gravitational direction as compared with the opening of the second liquid channel, and an air-liquid interface in the first liquid channel is held by a meniscus force so that the air-liquid interface in the first liquid channel is located at the upper side in the gravitational direction as compared with an air-liquid interface in the second liquid channel.

Abstract: A liquid storage unit including a first liquid storage chamber having a constant volume and being capable of holding liquid supplied from a liquid tank; a second liquid storage chamber communicating with the first liquid storage chamber; a pressure control chamber configured to change a pressure of the pressure control chamber through actuation of a pressure control unit; and an elastic member being configured to tightly partition the second liquid storage chamber and the pressure control chamber from each other and being deformable so as to increase and decrease a volume of the second liquid storage chamber in accordance with the pressure of the pressure control chamber. The elastic member is capable of removing bubbles in the first liquid storage chamber by increasing and decreasing the volume of the second liquid storage chamber through the deformation.

Abstract: A liquid discharge head including a liquid storage chamber capable of holding a liquid, a liquid communication pipe communicating with the liquid storage chamber and being configured to supply the liquid from a liquid tank to the liquid storage chamber by installing the liquid tank to the pipe to communicate with the liquid tank, an discharge port communicating with the liquid storage chamber to discharge the liquid, an electrode pair each having an outside end portion located outside the liquid storage chamber and detecting a liquid level of the liquid storage chamber, and an electric contact portion connected to the outside end portion of each of the electrode pair. The electric contact portion is located above the liquid communication pipe with an discharge port surface on which the discharge port opens taking a position facing perpendicularly downward.

Abstract: In a state in which a liquid container is mounted on a recording device, a liquid ejection head communicates with a liquid chamber through a first liquid channel and a second liquid channel, an opening of the first liquid channel at a side far from the liquid ejection head and an opening of the second liquid channel at a side far from the liquid ejection head are made at the liquid chamber, the opening of the first liquid channel is located at an upper side in a gravitational direction as compared with the opening of the second liquid channel, and an air-liquid interface in the first liquid channel is held by a meniscus force so that the air-liquid interface in the first liquid channel is located at the upper side in the gravitational direction as compared with an air-liquid interface in the second liquid channel.

Abstract: A liquid container and an apparatus in which the liquid container is mountable are provided, the liquid container and the apparatus enabling the presence or absence of remaining liquid to be checked without the need for a power source and even after the liquid container is removed. The pressure in a communication path is maintained while ink in a containing section is not supplied to the exterior. Thus, the displacement state of a detection valve which is displaced depending on the pressure in the communication path can be maintained even after removal of an ink tank.

Abstract: The invention is to prevent positional deviation of a sealing valve, improve bubble releasability during atmosphere introduction, and stably supply ink to a recording head. The configuration is provided with an opening 270 on an upper portion of a cylindrical regulating body 165 of a joint base 140 in a state where an ink tank 100 is mounted on a connection unit 10 of a printer.

Abstract: A liquid container and an apparatus in which the liquid container is mountable are provided, the liquid container and the apparatus enabling the presence or absence of remaining liquid to be checked without the need for a power source and even after the liquid container is removed. The pressure in a communication path is maintained while ink in a containing section is not supplied to the exterior. Thus, the displacement state of a detection valve which is displaced depending on the pressure in the communication path can be maintained even after removal of an ink tank.

Abstract: A liquid container enables a liquid contained in a liquid containing chamber to be supplied to an exterior through a supply port. The liquid container includes a first channel, a second channel, and a communication path. The first channel is in communication with a first opening which opens into the liquid containing chamber. The second channel is in communication with a second opening which opens into the liquid containing chamber, the second opening being positioned above the first opening in a direction of gravitational force. The communication path allows the first channel and the second channel to communicate with each other outside the liquid containing chamber to permit a flow of the liquid.