Certain examples described herein relate to liquid waste containers delimiting an opening for receiving liquid. The liquid waste container comprises a receptacle for liquid waste and a bistable arrangement having first and second stable states such that when the bistable arrangement is in the first stable state, liquid can be received into the receptacle through the opening, and when the bistable arrangement is in the second stable state, liquid is prevented from exiting the receptacle through the opening. The example liquid waste container further comprises an actuator arranged to engage the bistable arrangement and to cause the bistable arrangement to transition from the first stable state to the second stable state.

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 liquid ejecting device includes a flow path member, an actuator, a pump, and a controller. The flow path member includes a flow path configured to direct flow of a pseudoplastic liquid through the flow path member. The actuator is configured to cause droplets to be ejected. The pump is configured to cause the liquid to flow sequentially through a supply reservoir, a plurality of supply manifolds, a plurality of supply flow paths, and a plurality of pressure chambers. The controller is configured to adjust a flow rate of the liquid to a prescribed target flow rate. The flow path has a flow path shape in which an average viscosity of the liquid in the plurality of supply flow paths is less than or equal to half an average viscosity of the liquid in the plurality of supply manifolds when the flow rate is equal to the target flow rate.

A drainage container configured to be attached and detached in an attachment/detachment direction to and from an apparatus including a discharge portion to discharge drainage and configured to store the drainage discharged from the discharge portion, includes: a housing that stores the drainage and includes an opening formed in an upper surface of the housing; an accepting portion that accepts the drainage discharged from the discharge portion; and a lid portion configured to open and close the opening, in which the lid portion takes on an open state to open the opening when the drainage container is attached to the apparatus, and the lid portion takes on a closed state to close the opening when the drainage container is detached from the apparatus.

Disclosed is a method to mitigate deterioration of printing fluid in a tank of a printer. The method comprises: draining printing fluid from a tank of a printer, and stopping the draining before the tank is empty, wherein the printing fluid comprises solids suspended in imaging oil, filtering the printing fluid drained from the tank, to separate at least some of the solids from the imaging oil, passing the filtered imaging oil to a reservoir; and then passing imaging oil from the reservoir to the tank. Also disclosed is a printer and a system to perform the method.

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; wherein 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 the vertical direction.

Disclosed is a method to mitigate deterioration of printing fluid in a tank of a printer. The method comprises: draining printing fluid from a tank of a printer, and stopping the draining before the tank is empty, wherein the printing fluid comprises solids suspended in imaging oil, filtering the printing fluid drained from the tank, to separate at least some of the solids from the imaging oil, passing the filtered imaging oil to a reservoir; and then passing imaging oil from the reservoir to the tank. Also disclosed is a printer and a system to perform the method.

An liquid circulation device comprises a liquid casing, a gas replenishing section and a liquid replenishing section. The liquid casing retains liquid to be supplied to a liquid ejection section for ejecting the liquid and includes a liquid chamber connected with the liquid ejection section in such a manner that the liquid can be circulated therebetween. The ink circulation device increases pressure inside of the liquid casing by replenishing the gas to the liquid casing with the gas replenishing section and replenishing the liquid to the liquid casing with the liquid replenishing section, and meets a relation (ΔP1*(d1)̂2/L1)/(ΔP2*(d2)̂2/L2)>μ1/μ2.

A technique of reducing the possibility that a liquid remains in a buffer chamber is provided. There is provided a liquid supply device configured to supply a liquid to a liquid ejection head. The liquid supply device comprises a liquid containing chamber configured to contain the liquid; an air communication path configured to include a first connection portion at one end that is connected with the liquid containing chamber and an air outlet port at the other end that is open to the atmosphere; and a buffer chamber provided in the middle of the air communication path. The air communication path includes a connection path that is located on a downstream side of the buffer chamber in the air communication path in a flow direction of a fluid from the air outlet port toward the liquid containing chamber and is configured to include a second connection portion at an upstream end connected with the buffer chamber. When the first connection portion is exposed to the liquid in the liquid containing chamber, the second connection portion is placed in a lower area in a vertical direction of the buffer chamber.

A waste liquid box management method sets a type of ink to be contained in a container, for a waste liquid box that includes a coupling portion coupled to a printer, the container containing ink discharged from the printer via the coupling portion, and a storage unit. The waste liquid box management method individually allocates different storage regions, in the storage unit, to a plurality of ink types, writes predetermined type specification data into a selected storage region, that is the storage region allocated to the ink type to be contained in the container, and inhibits writing to the storage region other than the selected storage region in a state in which data other than the type specification data is stored therein.