A printing apparatus includes a printing unit that includes an ejection port surface provided with ejection ports through which liquid is ejected, a wiping unit, a depressurizing unit, and detection unit. The wiping unit has an opening and wipes the ejection port surface by moving in a predetermined direction while the opening abuts against the ejection port surface. The depressurizing unit applies negative pressure to the ejection port surface via the opening. The detection unit detects an ejection state of the ejection ports. After driving the depressurizing unit when the opening abuts against the ejection port surface, the suction operation sucks the liquid from the ejection ports while moving the wiping unit. The suction operation is performed from a first ejection port detected as an ejection-failed ejection port by the detection unit under a suction condition different from suction conditions of the ejection ports other than the first ejection port.

A printing apparatus includes: first and second heads; a carriage; and a control device. The control device is configured to perform: (a) selecting; (b) setting; and (c) executing. The (a) selecting sets one of the first and second heads as an active head. The (b) setting sets an operation mode to one of a plurality of modes including first and second modes. The (c) executing executes a printing operation under the operation mode. The printing operation is performed by ejecting ink from both the first and second heads in a state where the first mode is set as the operation mode. The printing operation is performed by ejecting ink from the active head without ejecting ink from a non-active head in a state where the second mode is set as the operation mode. The non-active head is a head other than the active head among the first and second heads.

A liquid ejection apparatus includes: a liquid ejection head having a nozzle which ejects a liquid containing volatile organic compounds to a medium; and a maintenance unit that has a cap, which forms a closed space including an opening of the nozzle, and a suction unit that suctions a fluid from the closed space, and that performs maintenance for discharging the liquid from the nozzle by reducing pressure of the closed space. The maintenance unit is provided with a filter for adsorbing volatile organic compounds contained in the liquid discharged from the liquid ejection head.

The liquid discharge apparatus includes a liquid discharge head having nozzles formed therein, to discharge liquid from the nozzles and a cap to contact with or separate from the liquid discharge head to maintain the liquid discharge head. The liquid discharge head includes a common chamber connected to the nozzles, a liquid supply port provided at one end of the liquid discharge head in a longitudinal direction of the liquid discharge head to supply liquid to one end of the common chamber, and a liquid discharge port provided at another end of the liquid discharge head in the longitudinal direction to discharge liquid, which flows through the common chamber and is not discharged from the nozzles, from another end of the common chamber. The cap includes a drainage supply port to be connected with the liquid discharge port of the liquid discharge head with a connection path.

A notification device capable of suppressing the occurrence of user's mistake in supplement of a printing liquid. An acquisition unit that acquires information relating to a residual amount of each of a plurality of printing liquids supplied to a printing apparatus and a determination unit that determines whether or not each of the plurality of printing liquids is a printing liquid of a notification target of which a residual amount is a predetermined amount or less based on the acquired information are included. In addition, a notification unit, in a case where a plurality of printing liquids of the notification target determined by the determination unit are present, notifies information relating to the residual amount of a predetermined printing liquid is included. This notification unit performs a notification with priority for a predetermined printing liquid satisfying a predetermined condition among the plurality of printing liquids of the notification target.

The object of the present disclosure is to optimize the time necessary for filling and the ink consumption. One embodiment of the present disclosure is a printing apparatus having: a storage unit; a print head having an ejection port from which ink supplied from the storage unit is ejected; an ink supply path that connects the storage unit and the print head; a suction unit configured to perform suction at the ejection port; and a supply control unit configured to supply ink stored in the storage unit to the ink supply path and the print head by performing suction at the ejection port by the suction unit, and the printing apparatus has an acquisition unit configured to acquire information relating to ink discharge from the ink supply path and the supply control unit determines the number of times of suction by the suction unit based on the information.

There is provided a printer including: a liquid jetting head; a receiving section; a waste-liquid storing section; a connecting channel connecting the receiving section and the waste-liquid storing section; a pump; and a controller. The controller executes: printing; recovering nozzles; discharging the liquid, which is present in at least one of the receiving section and the connecting channel, to the waste-liquid storing section, after the recovering of the nozzles. Under a condition that there is no input of the print data before the discharging of the liquid, the controller executes the discharging of the liquid continuously after the recovering of the nozzles; under a condition that there is an input of the print data before the discharging of the liquid, the controller executes the printing after the recovering of the nozzles and then executes at least a part of the discharging of the liquid after the printing.

A liquid ejection apparatus includes a liquid ejection head having a plurality of nozzles, a determination circuit, a clock, and a controller. The controller is configured to determine whether the clock is in an on or off state. In response to determining that the clock is in an on state, the controller is configured to perform an inspection process at a first time. In the inspection process, the controller drives the liquid ejection head to eject liquid from a nozzle of the plurality nozzles and receive a determination signal that is output from the determination circuit in response to ejection of liquid from the nozzle of the plurality of nozzles. In response to determining that the clock is in an off state, the controller is configured to perform the inspection process at a predetermined time that is a time after the clock is returned to an on state.

A maintenance method for a liquid discharging apparatus including a discharging portion that discharges liquid, the maintenance method includes acquiring first viscosity information related to viscosity of the liquid inside the discharging portion, discharging a first amount of the liquid from the discharging portion, acquiring second viscosity information related to viscosity of the liquid inside the discharging portion, and discharging a second amount of the liquid based on the first viscosity information and the second viscosity information, from the discharging portion.

A liquid ejection apparatus includes a first circuit to output a determination signal indicating that ejecting ink is in failure, a second circuit to output a temperature signal indicating a temperature, a recovery device to perform a recovery operation, and a controller. The controller causes a recovery device to perform a first recovery operation based on a first failure-nozzle data in response to determining that a first temperature and a second temperature satisfy a predetermined condition.