A liquid ejecting apparatus includes a liquid ejecting head that ejects liquid through a nozzle, a supply flow path that supplies liquid from a liquid container containing liquid to the liquid ejecting head, a liquid chamber provided in a buffer chamber disposed in the supply flow path, the liquid chamber being configured to change in volume, a liquid feeding unit of a reversible type disposed in the supply flow path between the liquid container and the liquid chamber, a control portion that controls driving of the liquid feeding unit, and a suction unit that suctions liquid through the nozzle. The control portion controls the liquid feeding unit to perform reverse feeding of the liquid from the liquid chamber to the liquid container before the suction unit suctions the liquid through the nozzle.

An ink-jet printer including a conveyor, a carriage, a recording head, a power supply, an ink receiver, a command receiver, and a controller, is provided. The controller executes the steps of: determining a discharge ink amount that should be discharged to the ink receiver; raising a drive voltage to a first voltage when the discharge ink amount is less than a first threshold value, and raising the drive voltage to a second voltage when the discharge ink amount is the first threshold value or more; performing a flushing process; based on the flushing process after having raised the drive voltage to the second voltage having finished in the case of having raised the drive voltage to the second voltage, stepping down the drive voltage from the second voltage to the first voltage; and based on the flushing process having finished and on the drive voltage being the first voltage, performing a printing process.

An inkjet printing apparatus includes a printhead having an ejection orifice surface on which ejection orifices for ejecting ink are arranged, where the printhead performs a printing operation in a printing area; a carriage including the printhead, and movable in a first direction; a cap for covering the ejection orifice surface; and a wiper that wipes the ejection orifice surface. The cap is movable, by a movement of the carriage, to a first position, and to a second position farther from the printing area along the first direction. At the second position, the cap can rise and lower to a capping position at which the cap abuts the ejection orifice surface, and to a separated position at which the cap does not abut the ejection orifice surface. The wiper wipes the ejection orifice surface when the cap is at the second position and at the separated position.

In a method of controlling a liquid discharge device, the liquid discharge device includes a liquid discharge unit and at least one valve body. The liquid discharge unit discharges from a nozzle liquid supplied from at least one supply channel. The at least one valve body opens/closes the at least one supply channel. The method includes first control and second control. The first control causes a pressure to be applied to the liquid so as to supply the liquid to the at least one supply channel. The second control causes an external force to operate the at least one valve body operable in accordance with a pressure on a downstream side of the at least one valve body so as to adjust and hold a degree of opening of the at least one valve body in a range between a closed state and a full-open state.

An inkjet printing apparatus includes a printhead having an ejection orifice surface on which ejection orifices for ejecting ink are arranged, where the printhead performs a printing operation in a printing area; a carriage including the printhead, and movable in a first direction; a cap for covering the ejection orifice surface; and a wiper that wipes the ejection orifice surface. The cap is movable, by a movement of the carriage, to a first position, and to a second position farther from the printing area along the first direction. At the second position, the cap can rise and lower to a capping position at which the cap abuts the ejection orifice surface, and to a separated position at which the cap does not abut the ejection orifice surface. The wiper wipes the ejection orifice surface when the cap is at the second position and at the separated position.

A liquid supplying device includes a first intermediate storage and a second intermediate storage that store liquid and are provided such that the liquid can be supplied from a liquid ejecting unit which ejects the liquid, a liquid supply source holding unit that holds a liquid supply source which accommodates the liquid and that can supply the liquid accommodated in the liquid supply source to the first intermediate storage and the second intermediate storage, and a pressure regulating mechanism that can regulate pressures inside the first intermediate storage and inside the second intermediate storage. In the liquid supplying device, the inside of one intermediate storage, out of the first intermediate storage and the second intermediate storage, is depressurized, and the liquid is supplied from the liquid supply source to the one intermediate storage.

A liquid ejecting apparatus includes a liquid inflow unit provided in the liquid supply path which supplies a liquid to a liquid ejecting unit and into which the liquid flows, a liquid accommodation unit having a diaphragm section, a communication path through which the liquid inflow part and the liquid accommodation part communicate, and a pressure-regulating mechanism having an on-off valve which opens and closes the communication path in response to displacement of the diaphragm portion, and a pressing mechanism which puts the on-off valve in an open state regardless of the pressure in the liquid inflow unit by pressing the diaphragm portion.

An ink-jet printer including a conveyor, a carriage, a recording head, a power supply, an ink receiver, a command receiver, and a controller, is provided. The controller executes the steps of: determining a discharge ink amount that should be discharged to the ink receiver; raising a drive voltage to a first voltage when the discharge ink amount is less than a first threshold value, and raising the drive voltage to a second voltage when the discharge ink amount is the first threshold value or more; performing a flushing process; based on the flushing process after having raised the drive voltage to the second voltage having finished in the case of having raised the drive voltage to the second voltage, stepping down the drive voltage from the second voltage to the first voltage; and based on the flushing process having finished and on the drive voltage being the first voltage, performing a printing process.

An air priming system is described that can prime printer fluid of one or more printer fluid tanks of a printer. The air priming system includes multiple priming units that are coupled together so as to be rotated or otherwise adjusted together to be paced into one of a plurality of priming stages. In each of the plurality of priming stages, air flow is either allowed or blocked through specific priming units.

An inkjet printing apparatus includes a printhead having an ejection orifice surface on which ejection orifices for ejecting ink are arranged, where the printhead performs a printing operation in a printing area; a carriage including the printhead, and movable in a first direction; a cap for covering the ejection orifice surface; and a wiper that wipes the ejection orifice surface. The cap is movable, by a movement of the carriage, to a first position, and to a second position farther from the printing area along the first direction. At the second position, the cap can rise and lower to a capping position at which the cap abuts the ejection orifice surface, and to a separated position at which the cap does not abut the ejection orifice surface. The wiper wipes the ejection orifice surface when the cap is at the second position and at the separated position.