An inkjet printing device and a method of addressing non-discharge. The inkjet printing device comprises a print head including nozzles that discharge an ink including light emitting elements, a dipping bath in which the print head is immersed and which includes a suction solution, and a suctioning part which is connected to the print head and suctions the suction solution along with the ink remaining in the print head unit.

An ink recirculating system for an inkjet printer includes an ink tank having a cavity having a lower side wall converging towards a bottom and closing wall of the tank, of a decreasing cross-section; an outlet duct for ink inside the cavity and coaxial to a longitudinal axis of the tank, and an inlet opening above and near the bottom and closing wall; a first duct with an end portion having an opening for supplying ink to the tank provided in the lower portion of the tank; a pump to pump ink from the outlet duct to the inlet duct, the end portion being substantially tangent to a portion of a circular sector of the side wall of the lower portion of the tank, to create a substantially swirling flow in the ink and a mixing of the ink or the components thereof.

There is provided a liquid consuming apparatus including: a tank having a liquid storing chamber, an erected wall through which the liquid inside the liquid storage chamber is visible from outside of the tank, and an inlet which is formed to penetrate through the erected wall and via which the liquid is poured into the liquid storage chamber; a liquid consuming section which consumes the liquid stored in the liquid storing chamber; and a cover. A transmitting section and a checking section are formed in an upper surface, of the cover, under a condition that the cover is in the exposure position, the transmitting section configured to transmit information optically to a user of the liquid consuming apparatus and the checking section configured to prevent the liquid moving on a particular surface of the cover from arriving at the transmitting section.

There is provided a liquid consuming apparatus including: a tank having a liquid storing chamber, an erected wall through which the liquid inside the liquid storage chamber is visible from outside of the tank, and an inlet which is formed to penetrate through the erected wall and via which the liquid is poured into the liquid storage chamber; a liquid consuming section which consumes the liquid stored in the liquid storing chamber; and a cover. A transmitting section and a checking section are formed in an upper surface, of the cover, under a condition that the cover is in the exposure position, the transmitting section configured to transmit information optically to a user of the liquid consuming apparatus and the checking section configured to prevent the liquid moving on a particular surface of the cover from arriving at the transmitting section.

A container includes a container body, and a cover attached to the container body. The container body includes a front wall, a rear wall, and a liquid channel. The container body has a storage chamber in fluid communication with the liquid channel and positioned between the front wall and the rear wall in a front-rear direction. The liquid channel extends in the front-rear direction to have a supply opening that is open on the front wall and that is open frontward. The cover has an opening that is open rearward and the cover covers least a part of an outer surface of the front wall. The supply opening of the container body is positioned below a lower end of the opening of the cover.

A container includes a container body, and a cover attached to the container body. The container body includes a front wall, a rear wall, and a liquid channel. The container body has a storage chamber in fluid communication with the liquid channel and positioned between the front wall and the rear wall in a front-rear direction. The liquid channel extends in the front-rear direction to have a supply opening that is open on the front wall and that is open frontward. The cover has an opening that is open rearward and the cover covers least a part of an outer surface of the front wall. The supply opening of the container body is positioned below a lower end of the opening of the cover.

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 liquid discharge apparatus includes a liquid discharge head configured to discharge a liquid, a liquid cartridge configured to store the liquid to be discharged from the liquid discharge head, a holder to which the liquid cartridge is detachably attachable, a timer configured to countdown a time, and circuitry configured to control the liquid discharge head to discharge the liquid as a discharge operation, control the liquid discharge head to stop the discharge operation, determine an attachment or a detachment of the liquid cartridge to or from the holder while the discharge operation is stopped, control the timer to prepare countdown of the time in response to a detachment of the liquid cartridge from the holder, and control the liquid discharge head to continue stopping the discharge operation in response to an attachment of the liquid cartridge to the holder before the time has reached zero.

An ink storage unit capable of stirring ink by ink circulation is proposed. The ink storage unit, which is configured to store ink for supplying the ink to an inkjet head including a plurality of nozzles to discharge the ink, includes an ink storage container having an inside space configured to store the ink therein, a head supply tube configured to supply the ink stored in the ink storage container to the inkjet head, a head recovery tube configured to recover remaining ink remained in the inkjet head to the ink storage container, a circulation tube configured to drain the ink through a first end thereof connected to the ink storage container and to receive the ink through a second end thereof connected to the ink storage container, and a circulation pump provided in the circulation tube to transfer the ink.