The liquid ejection apparatus includes a circulation unit configured to circulate a liquid along a circulation passage extending from a liquid supply source to the liquid supply source through a liquid ejection head. Further, the liquid ejection apparatus includes a deaeration unit configured to perform a deaeration operation of decreasing a dissolved gas amount of the liquid, a recovery unit configured to recover ejection performance of an ejection opening, and a control unit configured to control an operation of driving the circulation unit and the deaeration unit. The control unit starts the deaeration operation and circulates the liquid having been deaerated by the deaeration operation inside a circulation path after the recovery operation and before an initial printing operation after the recovery operation.

The liquid ejection apparatus includes a circulation unit configured to circulate a liquid along a circulation passage extending from a liquid supply source to the liquid supply source through a liquid ejection head. Further, the liquid ejection apparatus includes a deaeration unit configured to perform a deaeration operation of decreasing a dissolved gas amount of the liquid, a recovery unit configured to recover ejection performance of an ejection opening, and a control unit configured to control an operation of driving the circulation unit and the deaeration unit. The control unit starts the deaeration operation and circulates the liquid having been deaerated by the deaeration operation inside a circulation path after the recovery operation and before an initial printing operation after the recovery operation.

Provided is a liquid container and a liquid jet apparatus to which liquid liquid inlet portion can be supplied stably. The liquid container includes: a liquid containing chamber; an air communication portion connecting an air introduction port for introducing air into the liquid containing chamber with an air exposing port; a liquid inlet portion; and a liquid discharging portion configured to discharge the liquid to the liquid ejection head. The liquid containing chamber has a viewing portion that makes it possible to view a liquid surface from outside, and a lower limit display portion that serves as a reference for replenishing the liquid in the liquid containing chamber. The air introduction port is located at a position that is lower than the lower end of the inlet opening, is lower than a position of the end surface of a nozzle, and is higher than a position of the lower limit display portion.

Provided is a liquid container and a liquid jet apparatus to which liquid liquid inlet portion can be supplied stably. The liquid container includes: a liquid containing chamber; an air communication portion connecting an air introduction port for introducing air into the liquid containing chamber with an air exposing port; a liquid inlet portion; and a liquid discharging portion configured to discharge the liquid to the liquid ejection head. The liquid containing chamber has a viewing portion that makes it possible to view a liquid surface from outside, and a lower limit display portion that serves as a reference for replenishing the liquid in the liquid containing chamber. The air introduction port is located at a position that is lower than the lower end of the inlet opening, is lower than a position of the end surface of a nozzle, and is higher than a position of the lower limit display portion.

A liquid discharge apparatus includes a liquid discharge head to discharge liquid, a liquid circulation path including the liquid discharge head, an exhaust path connected to the liquid circulation path on a downstream side of the liquid discharge head in a circulation direction of the liquid, and circuitry. The liquid circulation path circulates the liquid via the liquid discharge head. The circuitry opens and closes between the liquid circulation path and the exhaust path to exhaust bubbles in the liquid circulation path to an outside of the liquid circulation path through the exhaust path when the liquid is circulated in the liquid circulation path.

A liquid discharge apparatus includes a liquid discharge head to discharge liquid, a liquid circulation path including the liquid discharge head, an exhaust path connected to the liquid circulation path on a downstream side of the liquid discharge head in a circulation direction of the liquid, and circuitry. The liquid circulation path circulates the liquid via the liquid discharge head. The circuitry opens and closes between the liquid circulation path and the exhaust path to exhaust bubbles in the liquid circulation path to an outside of the liquid circulation path through the exhaust path when the liquid is circulated in the liquid circulation path.

A filter unit which is detachably mounted on a liquid ejecting apparatus including a liquid ejecting section which ejects liquid, the filter unit including a filter which filters the liquid; and a storage medium which stores information on the filter.

A liquid accommodation body that is removably installed in a liquid ejecting apparatus provided with a supply flow channel that supplies a liquid to a liquid ejecting portion, and a feedback flow channel that is connected to the supply flow channel so as to form a circulation flow channel, and is provided with a liquid accommodation portion that accommodates the liquid, a lead-out flow channel that connects a lead-out port, which is connected to the supply flow channel, and the feedback flow channel, an introduction flow channel that connects an introduction port, which is connected to the feedback flow channel, and the lead-out flow channel, and a filter portion that is provided in a partial circulation flow channel, which, among portions of the lead-out flow channel and the introduction flow channel, configures the circulation flow channel, and filters the liquid.

A recording apparatus includes a tank including a chamber configured to store liquid to be supplied to a recording head that ejects the liquid and a filling port from which the liquid is injected into the chamber, and an injection auxiliary member configured to assist injecting of the liquid into the chamber from the filling port, the injection auxiliary member including a first and a second flow channels each defined by a first or a second upper end portion that opens toward outside of the tank and a first or a second lower end portion that opens toward inside of the tank, wherein the second flow channel has an expansion portion arranged in a middle portion between the second upper end portion and the second lower end portion and configured to form a step to expand a cross-sectional area.

There is provided a liquid ejecting head including: first and second nozzle rows extending in a first direction; a first supply flow path; a first filter chamber having a first inlet; and a second filter chamber having a second inlet, in which the first and second nozzle rows are shifted from each other in both the first direction and a second direction orthogonal to the first direction, the first supply flow path has a branch flow path for distributing the liquid between the first filter chamber and the second filter chamber at a branch position, the branch position is disposed between the first filter chamber and the second filter chamber in a plan view, and the first and second inlets are disposed at a part where the first filter chamber and the second filter chamber overlap each other when viewed in the second direction.