An inkjet recording apparatus includes a recording head, a waste ink tray, an ink inflow section, an ink detecting section, and a controller. The recording head ejects ink. The waste ink tray recovers the ink. The ink inflow section is located on the waste ink tray. The ink flows into the ink inflow section. The ink detecting section outputs a detection signal indicating whether there is the ink or not. The ink inflow section has a first inflow opening and a second inflow opening. The second inflow opening is located at a position higher than a position of the first inflow opening. The ink detecting section detects whether or not the ink has flown into the second inflow opening. The controller, upon receiving the detection signal, detects that the first inflow opening is clogged.

An ink cartridge clean device including a housing, a work platform, at least one ink stack and at least one ink absorption pad clean element. The housing has a first sidewall and a second sidewall opposite to each other, and an accommodation groove is defined by the housing. The work platform is disposed in the accommodation groove and has two lateral surfaces opposite to each other, and each lateral surface has at least one stopper. The ink stack is disposed on the work platform, and has an ink absorption pad. The ink absorption pad clean element is rotatably connected with the first sidewall and the second sidewall. When the work platform is adjusted from a first position to a second position, the ink absorption pad clean element is rotated, so that the corresponding ink absorption pad is cleaned, thereby preventing the residual ink from contaminating or blocking the ink cartridge.

An ink cartridge clean device including a housing, a work platform, at least one ink stack and at least one ink absorption pad clean element. The housing has a first sidewall and a second sidewall opposite to each other, and an accommodation groove is defined by the housing. The work platform is disposed in the accommodation groove and has two lateral surfaces opposite to each other, and each lateral surface has at least one stopper. The ink stack is disposed on the work platform, and has an ink absorption pad. The ink absorption pad clean element is rotatably connected with the first sidewall and the second sidewall. When the work platform is adjusted from a first position to a second position, the ink absorption pad clean element is rotated, so that the corresponding ink absorption pad is cleaned, thereby preventing the residual ink from contaminating or blocking the ink cartridge.

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 fluid ejection device may include fluid actuators and an actuation controller. Each fluid actuator may have an associated address. The actuation controller is to receive an address for a fluid actuator of the device to be actuated and is further to automatically transmit one of different fire pulses based upon the received address.

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.

In the case of a method for operating a printing device (1), wherein a fluid that is provided for a printing procedure is supplied from a fluid storage container (6) by way of a supply line (14) to a printing head (13) so as to be able to be applied by the printing head (13) onto a surface, the fluid in a purification circuit (2) is conveyed through a purification installation (8), and by way of a contamination-measurement installation (11) a key contamination indicator of a fluid-specimen quantity in the purification circuit (2) is determined such that a printing procedure by way of which the fluid is dispensed from the printing head (13) commences only once the key contamination indicator has undershot a first threshold value. The invention also relates to a printing device (1) having a printing head (13) and having a connector installation (12) for a fluid storage container (6), said connector installation (12) being connected to the printing head (13) by way of a supply line (14), wherein the printing device (1) has a purification circuit (2) that is formed from fluid-line portions (3, 4, 5) and has a purification installation (8) and has a contamination-measurement installation (11) in which the fluid that by way of the fluid retrieval installation has been retrieved form the fluid storage container (6) can be purified, and a key contamination indicator of a fluid-specimen quantity in the purification circuit (6) can be determined before the purified fluid is supplied to the printing head (13).

In the case of a method for operating a printing device (1), wherein a fluid that is provided for a printing procedure is supplied from a fluid storage container (6) by way of a supply line (14) to a printing head (13) so as to be able to be applied by the printing head (13) onto a surface, the fluid in a purification circuit (2) is conveyed through a purification installation (8), and by way of a contamination-measurement installation (11) a key contamination indicator of a fluid-specimen quantity in the purification circuit (2) is determined such that a printing procedure by way of which the fluid is dispensed from the printing head (13) commences only once the key contamination indicator has undershot a first threshold value. The invention also relates to a printing device (1) having a printing head (13) and having a connector installation (12) for a fluid storage container (6), said connector installation (12) being connected to the printing head (13) by way of a supply line (14), wherein the printing device (1) has a purification circuit (2) that is formed from fluid-line portions (3, 4, 5) and has a purification installation (8) and has a contamination-measurement installation (11) in which the fluid that by way of the fluid retrieval installation has been retrieved form the fluid storage container (6) can be purified, and a key contamination indicator of a fluid-specimen quantity in the purification circuit (6) can be determined before the purified fluid is supplied to the printing head (13).

In one example in accordance with the present disclosure, a fluid ejection device is described. The fluid ejection device includes a number of nozzles to eject fluid. Each nozzle includes a firing chamber to hold fluid, a nozzle orifice through which to dispense fluid, and an ejector disposed in the firing chamber to eject fluid through the nozzle orifice. The fluid ejection device also includes a particle detector to detect the presence of foreign particles within the fluid in the firing chamber.