An environmental conditioner in an aqueous inkjet printer conditions the print zone in the printer so aqueous ink at the nozzles of the printheads maintains its low viscosity state and does not dry. The environmental conditioner includes a humidifying chamber having a reservoir configured to contain a volume of water, a heater configured to heat the water in the water reservoir to a predetermined temperature range, an air inlet to move air into the humidifying chamber, an air discharge configured to remove humidified air from the humidifying chamber and direct the humidified air into a space between a faceplate of a printhead and a path for media passing by the faceplate of the printhead. The chamber can include an ultrasonic atomizer to produce a moisturized mist for absorption by the heated air or wicking material to transfer moisture to the air.

A control method of a liquid ejection apparatus including a liquid ejection head, a cap configured to seal a nozzle formation surface, and an ejection failure detector which performs a detection operation of detecting ejection failure of a nozzle, the control method including starting a vibration operation of continuously vibrating the liquid in the nozzle, after a liquid ejection operation is completed, starting the detection operation before a relative moving operation of relatively moving the liquid ejection head and the cap so as to face each other is completed, and stopping the vibration operation after the detection operation.

A liquid ejecting apparatus includes a liquid ejecting portion configured to eject a liquid, a liquid collection device including a band-shaped member configured to come into contact with the liquid ejecting portion to wipe a liquid attached to the liquid ejecting portion, and a winding portion configured to wind up the band-shaped member, a temperature/humidity sensor configured to acquire temperature/humidity information related to a temperature and a humidity around the liquid collection device, and a control portion configured to cause the band-shaped member to come into contact with the liquid ejecting portion to wipe the liquid, and then cause the winding portion to wind up the band-shaped member. The control portion determines, based on the temperature/humidity information acquired by the temperature/humidity sensor, a winding length of the band-shaped member wound by the winding portion after the band-shaped member wipes the liquid.

A liquid discharge device includes a liquid discharge head including a plurality of liquid chambers respectively communicating with a plurality of nozzles and circulating liquid therethrough. Each liquid chamber is provided with a pressure generator for discharging the liquid from a corresponding nozzle. The liquid discharge device further includes a waveform data memory to store drive waveform data including discharge drive waveform data for discharging the liquid according to image data and micro-vibration drive waveform data for causing a micro vibration of a meniscus of the liquid discharge head. The liquid discharge device further includes circuitry configured to generate a drive waveform based on the drive waveform data; apply, to the pressure generator, a discharge drive waveform based on the discharge drive waveform data, in a printing area; and apply, to the pressure generator, a micro-vibration drive waveform based on the micro-vibration drive waveform data, in a non-print area.

An information processing device includes a storage portion storing a learned model trained by machine learning based on a data set in which temperature information, setting information, and countermeasure information are associated, a reception portion receiving the temperature information and the setting information at a time of ejecting ink by the printing head, and a processing portion deciding a countermeasure to be executed for condensation based on the received temperature information and setting information and the learned model.

A liquid ejecting device includes a housing, an ejecting unit located in the housing that ejects liquid onto a medium, and a display unit that displays a recommended condition of an installation environment where a device is installed. The display unit displays, as the recommended condition, any of (a) a recommended temperature condition indicating a recommended temperature range, (b) a recommended relative humidity condition indicating a recommended relative humidity range, (c) a recommended absolute humidity condition indicating a recommended absolute humidity range, and (d) a recommended temperature condition and a recommended absolute humidity condition.

A printing apparatus includes a conveyance unit configured to convey a print medium, a printhead for printing an image by discharging ink to the conveyed print medium, a heating unit provided on a downstream side of the printhead with respect to a conveyance direction of the print medium and configured to heat the print medium, and a ventilation unit provided on a downstream side of the heating unit with respect to the conveyance direction and configured to ventilate air in a peripheral space of a conveyance path of the print medium. The printing apparatus controls to delay a start of printing by the printhead so that the print medium dried by the heating unit passes through the conveyance path in a state in which a humidity in the space becomes lower than a predetermined value due to the ventilation.

A liquid ejecting system includes an environmental information acquiring unit that acquires, as environmental information at least one of a temperature and a humidity, an ejecting unit that ejects a liquid onto a medium, a drying unit that dries the medium onto which the liquid is ejected by the ejecting unit, a control unit that controls the ejecting unit and the drying unit, and a storage unit that stores setting information. The control unit acquires drying information corresponding to medium type information and ejection amount information acquired as a liquid ejection condition and the environmental information acquired by the environmental information acquiring unit, based on the setting information stored in the storage unit, and performs drying control that controls the drying unit, based on the acquired drying information.

An image forming apparatus includes a recording head, a controller, a first detector, and a second detector. The controller calculates a viscosity of ink in each of nozzles based on a temperature, a humidity, and an elapsed time. The controller determines, among the nozzles, a nozzle in which the viscosity is equal to or higher than a threshold to be a high-viscosity nozzle. The controller acquires non-ejection information indicating an ejection disabled nozzle that is disabled to eject the ink. The controller acquires a viscosity of the ink in the ejection disabled nozzle. The controller calculates an average value of viscosities of the ink in the plurality of nozzles. The controller compares the viscosity of the ink in the ejection disabled nozzle with the average value of the viscosities of the ink in the nozzles. The controller determines whether or not to change a contribution value based on a comparison result.

A liquid ejecting apparatus according to an aspect of the present disclosure has a nozzle configured to eject a liquid, a pressure chamber communicating with the nozzle, a piezoelectric element that varying pressure in the pressure chamber, an endless transport belt transporting a medium, an electrifying section electrifying the transport belt, and a driving circuit that supplying, to the piezoelectric element, a micro-vibration pulse that generates micro-vibration in the liquid in the pressure chamber without causing the liquid to be ejected from the nozzle. The micro-vibration pulse is varied according to first data related to the state of a meniscus in the nozzle in a first state in which the nozzle and the transport belt electrified by the electrifying section face each other.