A waste ink case includes a container. The container houses an ink absorber that absorbs ink. The container includes an ink introducing port, an exhaust vent, and a partition wall. Through the ink introducing port, the ink is introduced from a print head into the container. Through the exhaust vent, air in the container is exhausted. The partition wall acts as an obstruction between the ink introducing port and the exhaust vent. The ink absorber is provided along a ventilation passage. The ventilation passage is from the ink introducing port to the exhaust vent, detouring around the partition wall.

A liquid circulation device comprises a liquid chamber connected with a liquid discharge section that discharges liquid, a circulation section which circulates the liquid in a flow path containing the liquid chamber and the liquid discharge section, a liquid supply section, a pressure adjustment section and a control section that, according to fluctuation velocity of the pressure, replenishes the liquid through the liquid supply section if the detected pressure is equal to or smaller than a predetermined pressure value or lower than the predetermined pressure value and the pressure fluctuation velocity is equal to or greater than a predetermined speed or faster than the predetermined speed and adjusts the pressure of the liquid discharge section through the pressure adjustment section and the pressure fluctuation velocity is slower than the predetermined speed or equal to or smaller than the predetermined speed.

A waste liquid container includes a waste liquid vessel having a mounting face, a first side face, and a bottom face that are outer surfaces intersecting each other, a waste liquid inlet disposed on the mounting face, a circuit board having a connection terminal disposed along the first side face, and a first recess portion that opens in the mounting face and the bottom face below the waste liquid inlet. In the waste liquid container, when a width direction is defined as a direction in which both the mounting face and the bottom face extend, the first recess portion is disposed at a position between the waste liquid inlet and the connection terminal in the width direction.

A printer includes a head that injects a liquid, a cleaning mechanism, a waste liquid path, a waste liquid tank that is detachably attached and collects waste liquid, a displaceable member that is displaced to a first position when the waste liquid tank is attached and is displaced to a second position when the waste liquid tank is detached, a liquid receiving portion that is provided on the displaceable member and is located directly below an outlet of the waste liquid path when the waste liquid tank is not attached, a detection target that is provided on the displaceable member and moves together with the displaceable member, and a sensor that detects the detection target.

A liquid ejecting apparatus includes: an ejection portion that ejects liquid onto a medium; a waste liquid container having a container that is configured to store a waste liquid discharged from the ejection portion; a housing that houses the ejection portion; and a humidity adjustment portion that adjusts humidity inside the housing. The waste liquid container is configured to store moisture discharged from the humidity adjustment portion.

A recording apparatus includes a plurality of medium containing units that is provided along a vertical direction and contains a medium before recording, a liquid ejecting head that performs recording by ejecting liquid toward the medium, and at least one liquid containing unit that contains the liquid. The plurality of medium containing units includes a first medium containing unit located at an uppermost position, and a second medium containing unit located below the first medium containing unit. A size of the first medium containing unit in a medium feeding-out direction, in which the medium is fed out, is smaller than a size of the second medium containing unit in the medium feeding-out direction, and the at least one liquid containing unit is provided above the second medium containing unit in such a way as to overlap with the first medium containing unit in a vertical direction.

A damper device includes an upstream damper provided upstream of an ink head and a downstream damper provided downstream of the ink head. The upstream damper includes an upstream ink chamber communicating with an upstream inflow port and an upstream outflow port and storing ink, and an upstream detector that detects an amount of ink stored in the upstream ink chamber. The downstream damper includes a downstream ink chamber communicating with a downstream inflow port and a downstream outflow port and storing ink, and a downstream detector that detects an amount of ink stored in the downstream ink chamber.

A liquid ejecting apparatus includes a liquid ejecting head ejecting liquid onto a medium transported on a transport path extending in a depth direction, a carriage holding the liquid ejecting head and reciprocally moving in a width direction so as to cross the transport path, and a waste liquid containing portion containing waste liquid discharged from the liquid ejecting head. The carriage includes a plurality of liquid containers that contain the liquid and are mounted on the carriage in such a manner that a plurality of the liquid containers are arranged side by side with each other in the depth direction. A portion of the carriage overlaps the waste liquid containing portion in a vertical direction when the liquid ejecting head is outside the transport path.

A waste liquid tank includes a case. The case includes a first accommodating portion having an inlet and a first communication opening, a second accommodating portion having a second communication opening and a connecting portion connecting the first communication opening and the second communication opening, wherein a cross-sectional area of the connecting portion is less than a cross-sectional area of the first accommodating portion and is less than a cross-sectional of the second accommodating portion. The waste liquid tank includes a first absorber accommodated in the first accommodating portion, a second absorber accommodated in the second accommodating portion and a third absorber accommodated in the connecting portion. The connecting portion includes a passage defined between the third absorber and a peripheral portion of the connecting portion, the passage allowing the first accommodating portion to communicate with the second accommodating portion and for air to pass therethrough.

A liquid circulation device comprises a liquid chamber connected with a liquid discharge section that discharges liquid, a circulation section which circulates the liquid in a flow path containing the liquid chamber and the liquid discharge section, a liquid supply section, a pressure adjustment section and a control section that, according to fluctuation velocity of the pressure, replenishes the liquid through the liquid supply section if the detected pressure is equal to or smaller than a predetermined pressure value or lower than the predetermined pressure value and the pressure fluctuation velocity is equal to or greater than a predetermined speed or faster than the predetermined speed and adjusts the pressure of the liquid discharge section through the pressure adjustment section and the pressure fluctuation velocity is slower than the predetermined speed or equal to or smaller than the predetermined speed.