A cleaning device for printing heads arranged in a group along an alignment direction (Y) with a lower surface lying on a main plane (T). The device comprises a collecting head (2), movable along the alignment direction (Y) on the main plane (Y), in contact with or near the lower surfaces of the heads. The print head (2) is movable between a first and a second position that are located at the ends of the group of heads. The collecting head (2) is provided with an inlet opening (21) for collecting material from the heads (T).

A medium processing apparatus includes an intermediate stacker on which media recorded by a recording apparatus are stacked, the recording apparatus including a liquid ejection head which performs recording by ejecting liquid to media and a maintenance apparatus which performs maintenance of the liquid ejection head, and a processor which executes a process on the media received by the intermediate stacker. The medium processing apparatus executes the process after a medium which is last recorded before the maintenance is stacked on the intermediate stacker.

A liquid absorber includes a container and an absorbing unit. The container has an opening and collects a liquid. The absorbing unit is an assembly of porous absorbent blocks, each containing fibers and a polymeric absorbent, and is in the container with spaces between the porous absorbent blocks. Each of the porous absorbent blocks has a first component and a second component. The first component is porous and has a density of 0.05 [g/cm.sup.3] or more and 0.50 [g/cm.sup.3] or less. The second component has a higher polymeric absorbent content than the first component.

A printer is provided with a mounting portion and an arm. A head is mounted on the mounting portion. The head discharges a liquid. The arm can move between a fixed position and a released position. In the fixed position, the arm fixes the head mounted on the mounting portion to the mounting portion in a first direction, a second direction, and a third direction. In the released state, the arm unfixes the head from the mounting portion.

A liquid supply device includes a collection sub tank and a collection flow path. The collection sub tank collects liquid from a liquid discharge head. The collection flow path connects the liquid discharge head and the collection sub tank. The collection sub tank includes a first inflow port connected with the collection flow path and a first inner wall portion on an extension line extending from the first inflow port in a direction in which the liquid flows into the collection sub tank from the collection flow path. The first inner wall portion has one of an inclined surface inclined with respect to the extension line, an arc-shaped surface, and a curved surface.

A liquid discharge apparatus includes a liquid discharge portion configured to discharge a liquid from a nozzle provided in a nozzle surface and move in a X-axis direction, and a detection portion configured to detect a liquid droplet adhering to the nozzle surface, including an irradiating portion configured to radiate irradiation light along the nozzle surface in an irradiating direction intersecting the scanning direction, and a light receiving portion configured to receive the irradiation light radiated from the irradiating portion, in which in the liquid droplet detection of detecting the liquid droplet, the liquid discharge portion moves in the X-axis direction on a −Z direction side of the detection portion in a state where the irradiating portion is caused to radiate the irradiation light.

A printer includes a line head, a transport unit, a head moving unit, a cap unit, and a wiper unit. The head moving unit moves the line head to a recording position and a retracted position along a B direction. The cap unit is configured to move back and forth in an A direction between the line head and the transport unit. The wiper unit is configured to move back and forth in a Y direction intersecting both the B direction and the A direction between the line head and the transport unit. At least a portion of a first movement area in which the cap unit moves and at least a portion of a second movement area in which the wiper unit moves are disposed at an identical position in the B direction.

A recording device includes a recording head configured to discharge a liquid as a droplet, a carriage on which the recording head is mounted, a driving unit that causes the carriage to reciprocate along a guide shaft, and a control board on which a semiconductor element is mounted. In a state in which the carriage is positioned at one end of the guide shaft, the control board is disposed below the carriage.

A printing apparatus includes: a tank configured to contain ink; a print head configured to eject ink supplied from the tank; a supply flow path through which liquid is supplied from the tank to the print head; a collection flow path through which liquid is collected from the print head to the tank; a circulation unit configured to circulate ink inside a circulation flow path including the tank, the supply flow path, the print head, and the collection flow path; and a cooling unit configured to cool the tank by blowing.

A maintenance method for a liquid discharging apparatus including a liquid discharging head. The liquid discharging apparatus executes a printing process including a discharging process in which the liquid discharged from the liquid discharging head lands on the medium, and a maintenance process in which the liquid is discarded from the liquid discharging head. The maintenance method includes: counting a unit period number, which is the number of ended unit periods among a plurality of unit periods obtained by dividing a period required for the printing process in accordance with a first condition; executing the maintenance process when the unit period number reaches a defined number; acquiring viscosity information related to viscosity of the liquid inside the liquid discharging head; and decreasing the unit period number when the viscosity information satisfies a second condition.