Abstract: A tank includes a storage chamber, a bottom wall, a top wall, a peripheral wall connecting the bottom and top walls to each other, and an outlet in communication with the storage chamber. The bottom wall extends in a lateral direction crossing an up-down direction and has an inner surface including: a flat part extending in the lateral direction and defining a bottom of the storage chamber; and a protruding part protruding downward from the flat part and defining an extra space in communication with the storage chamber. The outlet is positioned in the extra space. Either the bottom wall or the top wall is integrally molded with the peripheral wall to constitute an integrally-molded wall structure having an aperture, and the other one of the bottom wall and the top wall is liquid-tightly connected to the integrally-molded wall structure while covering the aperture to define the storage chamber.

Abstract: There is provided a tank for storing ink to be supplied to an ink consuming device, including: a casing; an ink chamber; an ink inlet; an ink outlet; and an atmosphere communication part, the atmosphere communication part having first and second parts, and an atmosphere port, the first part having a labyrinth channel, the atmosphere port providing fluid communication between the ink chamber and an outside of the casing through the first part and the second part. The labyrinth channel and the second part share a common wall. The common wall defines a bottom of the labyrinth channel and a bottom of the second part. The ink inlet is different from the ink outlet and is located above the ink outlet. The entire labyrinth channel overlaps the second part in a horizontal direction orthogonal to an up-down direction and a front-rear direction when viewed in the horizontal direction.

Abstract: For an image forming apparatus including first and second storage chambers, an inequality expression of “R2>A×R1” is met. R1 is a sum of a passage resistance value obtained by flowing air through a first air communication portion and a passage resistance value obtained by flowing liquid through a supply portion. R2 is a passage resistance value obtained by flowing air through a second air communication portion. A is a cross-sectional area ratio obtained by dividing a first average cross-sectional area of a first space of the first storage chamber taken along a plurality of horizontal planes by a second average cross-sectional area of a second space of the second storage chamber taken along the plurality of horizontal planes. The first space contains at least a portion adjacent to the supply portion and accumulating the liquid. The second space contains at least a portion accumulating the liquid.

Abstract: There is provided a liquid supplying apparatus including: a liquid container including an internal space, and a tank having a storing chamber. The liquid container has: an upper surface, a nozzle, and a circular wall projecting upward from the upper surface. The tank has: a body; a projecting wall defining a tank recessed part, and a communicating tube positioned in the tank recessed part and having first and second channels which communicate the storing chamber with outside. The circular wall is inserted into the tank recessed part, and the communicating tube is inserted into the opening of the nozzle so as to allow the liquid to flow out from the internal space to the storing chamber. In a case that the liquid container is connected to the tank, the circular wall is positioned inside the projecting wall.

Abstract: An inspection signal output circuit including an electrode. The inspection signal output circuit outputs an inspection signal indicating an electrical change in the electrode when a head is driven to eject liquid from a nozzle toward the electrode. A controller performs an inspection operation sequentially for a plurality of nozzles. The inspection operation includes driving the head to eject liquid from the nozzle toward the electrode, acquiring the inspection signal output from the inspection signal output circuit, and determining whether there is an abnormality in ejection of liquid in the nozzle based on the acquired inspection signal. The controller performs, as the inspection operation, a first-type inspection of acquiring the inspection signal in a first order for the plurality of nozzles, and a second-type inspection of acquiring the inspection signal in a second order for the plurality of nozzles. The second order is different from the first order.

Abstract: A controller of a liquid ejection apparatus controls an ejection inspection circuit to perform a first ejection inspection. After the first ejection inspection, the controller controls a driving element to perform a post-inspection driving operation including a plurality of types of driving operations. The plurality of types of driving operations have different driving frequencies for driving the driving element. After the post-inspection driving operation, the controller controls the ejection inspection circuit to perform a second ejection inspection. In a case where a first condition is satisfied regarding a relationship between a result of the first ejection inspection and a result of the second ejection inspection, the controller performs a first operation including the post-inspection driving operation after the second ejection inspection.

Abstract: A tank includes a first storage chamber, a second storage chamber, a first communication part to which a first liquid bottle is connectable, and a second communication part to which a second liquid bottle is connectable. The first storage chamber is defined by a first surface and a second surface facing the first surface in a first direction. The second storage chamber is defined by a third surface and a fourth surface facing the third surface in the first direction. The first and second storage chambers are juxtaposed in the first direction. In the first direction, a center of the first communication part in the first direction is offset from a center of the first storage chamber in the first direction. In the first direction, a center of the second communication part in the first direction is offset from a center of the second storage chamber in the first direction.

Abstract: A printing liquid container includes first and second members having a supply port and a valve, respectively. The members rotate with respect to each other between first and second states. The valve closes and opens the supply port in the first and second states, respectively. The first and second members have first and second fitting portions, respectively. The fitting portions fit to a fitted portion of a tank in the first state. The second fitting portion allows rotation of the second member with respect to the fitted portion when the first fitting portion are fitted to the fitting portion. The first member does not rotate together with the second member due to fitting between the fitted portion and the first fitting portion. The second member cannot be removed from the fitted portion due to fitting of the second fitting portion to the fitted portion in the second state.

Abstract: An ink container includes a main body and a supply port. The main body includes a chamber configured to store ink. The supply port faces in a first direction. The main body further includes: a front surface positioned in the first direction from the supply port; a left surface that extends from the front surface in a second direction opposite to the first direction; a right surface that extends from the front surface in the second direction; and a first groove that extends from the front surface in the second direction, the first groove being positioned above the supply port in an up-down direction.

Abstract: An ink container includes a chamber, an ink supply portion, an electrical interface, and a first key portion. The ink supply portion is configured to supply ink from the chamber. The supply port defines a front end of the ink supply portion. The supply port is oriented in an attachment direction. The electrical interface has a contact surface facing upward in an up-down direction. The contact surface of the electrical interface is positioned above the supply port in the up-down direction. The first key portion is positioned forward of the supply port in the attachment direction, above the supply port in the up-down direction, and below the contact surface of the electrical interface in the up-down direction.

Abstract: An ink container is attachable to an attachment portion. The ink container includes a first member and a second member. The first member includes a chamber configured to store ink and a supply portion having a supply opening that opens forward in a front-rear direction. The second member is positioned forward of the first member.

Abstract: An ink container is insertable into an attachment unit that includes a contact group having a plurality of contacts aligned in a left-right direction. The ink container includes a main body that includes a chamber configured to store ink; a supply portion that extends forward from the chamber in a front-rear direction and is configured to supply the ink stored in the chamber to an outside of the main body; and an electrical interface positioned apart from the supply portion upwardly in an up-down direction orthogonal to the left-right direction and front-rear direction. The electrical interface includes an electrode group that has a plurality of electrodes aligned in the left-right direction. The electrode group is electrically connected to the contact group in a state where the ink container is inserted in the attachment unit.

Abstract: An ink container is insertable into an attachment unit. The ink container includes a main body that includes a chamber configured to store ink therein, a supply portion that extends forward from the chamber and is configured to supply the ink in the chamber to an outside of the main body; and an electrical interface that is positioned upward of the supply portion and apart from the supply portion and has an electrode.

Abstract: An ink container includes a chamber, a supply port, an electrical interface, and a protrusion. The chamber is configured to store ink. The supply port faces frontward in an insertion direction. The electrical interface includes a contact surface that faces upward in an up-down direction orthogonal to the insertion direction. The protrusion is positioned upward in the up-down direction and frontward in the insertion direction of the supply port.

Abstract: An ink container is provided. The ink container includes a main body. The main body includes a first key portion and a second key portion. The first key portion is positioned on a first outer surface of the main body. The second key portion is positioned on a second outer surface.

Abstract: An ink container includes a front wall, a rear wall, a first sidewall, and a second sidewall. The front wall faces frontward in an attachment direction of the ink container. The rear wall is spaced apart from the front wall in a rearward direction opposite the attachment direction. The first sidewall is positioned between the front wall and the rear wall. The second sidewall is positioned between the front wall and the rear wall, and spaced apart from the first sidewall. The front wall, the rear wall, the first sidewall and the second sidewall define a main body that includes a chamber configured to store ink.

Abstract: A liquid container is insertable into an attachment unit in a first direction. The liquid container includes a main body that includes a chamber and a protrusion. The chamber is configured to store liquid configured to store liquid. The protrusion has a contact surface that faces a second direction opposite to the first direction.

Abstract: An ink container includes a main body, a lower surface, and a guide wall. The main body includes a chamber configured to store ink. The main body has first and second sidewalls spaced apart from one another to define a first width. The supply port faces frontward in an attachment direction of the ink container and is configured to supply ink from the chamber. The lower surface is positioned above the supply port in an up-down direction, and forward of the supply port in the attachment direction of the ink container.

Abstract: A liquid cartridge includes a housing that has a cylindrical portion and a first valve mechanism at least partially accommodated in the cylindrical portion. The housing is blow molded with air blown from an air nozzle. At least a part of an inner surface of the cylindrical portion is a transfer surface to which an outer peripheral surface of a mold is transferred.

Abstract: A liquid cartridge includes a housing, a first support member, and a first valve mechanism. The housing includes a first tubular portion extending in a first direction. The first support member has a tubular shape and accommodated in the first tubular portion. The first valve mechanism is at least partially accommodated in the first support member.