A liquid ejection device includes a liquid ejection unit configured to perform printing by ejecting a liquid from a nozzle onto a medium, a maintenance unit configured to perform maintenance of the liquid ejection unit, a determination unit configured to determine whether printing data for the printing is ruled-line data including a vertical ruled line or non-ruled-line data not including the vertical ruled line, a storage unit configured to store a determination result obtained by the determination unit, and a control unit. The control unit changes intensity of the maintenance in accordance with a frequency of the ruled-line data included in the determination result stored in the storage unit.

An inkjet printing device includes a chamber having an imaginary centerline that divides a length of the chamber in the first direction into two halves, and a plurality of inkjet nozzles coupled to the chamber and receiving ink from the chamber, the inkjet nozzles being arranged in a plurality of columns along a first direction. The inkjet nozzles include a center column nozzle disposed adjacent to the centerline of the chamber and an outer column nozzle disposed farther from the centerline than the center column nozzle. The chamber includes a bump portion disposed farther from the centerline than the outer column nozzle, the bump portion including a bump on an inner surface of the chamber.

An ink set is an ink set including a cyan ink C1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a magenta ink M1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a yellow ink Y1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a cyan ink C2 which has a fluorescent brightening intensity of less than 3.0 and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, a magenta ink M2 which has a fluorescent brightening intensity of less than 3.0 and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, and a yellow ink Y2 which has a fluorescent brightening intensity of less than 3.0 and an SP value of 12 to 18 (cal/cm.sup.3).sup.1/2, in which the SP values are values obtained by a turbidity titration method using a mixed solution of water and acetone.

A liquid discharging apparatus, having a head with nozzles, a scanning assembly, a conveyer, and a controller, is provided. The controller is configured to determine whether the nozzles are to be flushed in a moving action which accompanies a discharging action, if the controller determines the nozzles are not to be flushed in the moving action, conduct the moving action to move the head at a first acceleration rate; if the controller determines the nozzles are to be flushed in the moving action, determine whether a distance between a flushing range and a discharging range is greater than or equal to a predetermined distance; and if the controller determines the distance is greater than or equal to the predetermined distance, conduct the moving action to move the head at a second acceleration rate and control the head to discharge liquid for flushing the nozzles.

The present application provides an inkjet printing device, which includes a print head, a first container, a first pipeline, and a first valve. The print head is configured to discharge printing material. The first container is configured to store a solvent for cleaning the print head. An input end of the first pipeline is in communication with the first container, and an output end of the first pipeline is in communication with the print head. The first valve is provided on the first pipeline.

Examples relate to capping stations having caps with positioning mechanism. The capping station for a printing system may comprise a cap to seal a printhead and a positioning mechanism to move the cap between a first cap position and a second cap position.

A maintenance section configured to perform maintenance on a recording section includes a first guided section, which is guided by the guide unit, and a second guided section, which is positioned in a first movement direction, is a direction from the retreat position toward the maintenance position with respect to the first guided section, and is guided by the guide unit, when the maintenance section moves from the maintenance position in the first movement direction, the guide unit is configured to allow pivot accompanied by separation of the second guided section from the guide unit, which is pivot of the maintenance section with the first guided section as a pivot axis, and the first guided section is configured to separate from the guide unit, by moving in the first movement direction after the pivot of the maintenance section is allowed.

There is provided a liquid discharge head, including: a pressure chamber connected to a nozzle from which a liquid is discharged; an actuator configured to apply discharge pressure to the liquid in the pressure chamber; a first supply channel which is connected to the pressure chamber, and through which a first liquid is supplied to the pressure chamber; a second supply channel, different from the first channel, which is connected to the pressure chamber, and through which a second liquid different from the first liquid is supplied to the pressure chamber; a first valve which is disposed in the first supply channel, and by which the first supply channel is opened and closed; and a second valve which is disposed in the second supply channel, and by which the second supply channel is opened and closed.

Disclosed is a substrate processing apparatus. The substrate processing apparatus includes a head unit including a head having at least one nozzle for ejecting a treatment liquid to a substrate and a cleaning unit that cleans the head, wherein the cleaning unit includes a first cleaning member that sprays a cleaning liquid to the head; and a second cleaning member that forms a suction space in combination with the head when being in close contact with the head, and removes impurities attached to the head by providing a reduced pressure to the suction space.

Disclosed is a substrate processing apparatus. The substrate processing apparatus includes a head unit including a head having at least one nozzle for ejecting a treatment liquid to a substrate and a cleaning unit that cleans the head, wherein the cleaning unit includes a first cleaning member that sprays a cleaning liquid to the head; and a second cleaning member that forms a suction space in combination with the head when being in close contact with the head, and removes impurities attached to the head by providing a reduced pressure to the suction space.