There is provided a liquid ejection apparatus, including: a head; a signal output circuit; a discharge mechanism; a controller; and a memory in which association information is stored. The controller is configured to: diagnose a degree of defectiveness of the head based on a signal from the signal output circuit; and receive, from a user, an input of discharge amount information. In response to the input of the discharge amount information, the controller is configured to: control the discharge mechanism to discharge a liquid by a discharge amount corresponding to the discharge amount information; and change the association in the association information based on the discharge amount corresponding to the discharge amount information and a discharge amount that corresponds to the degree of the defectiveness of the head.

A printing apparatus comprises a carriage including a print head that discharges ink, the carriage reciprocally moving relative to a print medium, a wiping unit configured to wipe a discharge port surface, and a control unit configured to control a movement operation of the carriage and a wiping operation of the wiping unit such that when a deceleration when stopping the carriage is a first deceleration, a time from when the carriage stops to when the wiping unit starts wiping is set to a first time, and when the deceleration when stopping the carriage is a second deceleration lower than the first deceleration, the time from when the carriage stops to when the wiping unit starts wiping is set to a second time shorter than the first time.

A liquid discharge apparatus includes: an ink composition containing 2-pyrrolidone and an alcohol having a main chain having 6 or less carbon atoms; a liquid discharge unit configured to discharge the ink composition from a nozzle formed in a nozzle surface; and a wiping unit configured to wipe the nozzle surface. The wiping unit includes a wiping member including protrusion-shape fibers. Each of the protrusion-shape fibers has a protruded portion in a cross-section orthogonal to a fiber axis thereof. The protruded portion is continuous in a direction along the fiber axis.

A liquid ejecting apparatus includes a printing portion and a control portion. The printing portion executes a printing operation including ejecting a liquid from a nozzle onto a medium. The control portion executes an initial operation upon supply of power and executes the printing operation in accordance with a print instruction. The initial operation and the printing operation include a common printing operation that is common to the initial operation and the printing operation. When the control portion does not receive the print instruction during execution of the initial operation, the control portion executes the initial operation including the common printing operation. When the control portion receives the print instruction during execution of the initial operation, the control portion omits the common printing operation from the initial operation.

A liquid ejection apparatus includes a liquid ejection head and a controller. The controller configured to perform: determining whether a discharge failure occurs in a first nozzle; in a case where it is determined that the discharge failure occurs in the first nozzle, determining whether a certain condition is satisfied; in a case where it is determined that the certain condition is satisfied: applying a flushing signal to a second driving element; applying a driving signal to the second driving element; determining whether the discharge failure occurs in a second nozzle; in a case where it is determined that the discharge failure does not occur in the second nozzle, executing a first purge; and in a case where it is determined that the discharge failure occurs in the second nozzle, executing a second purge.

A cleaning method of a liquid ejection head where recording element substrates having an ejection orifice forming-face having ejection orifice arrays which are aligned, and at least one array ejects a different recording liquid than another, includes wiping and preliminary ejection. In the wiping, a wiping member is caused to move along and wipe the arrays. In the preliminary ejection, before the wiping of the entire ejection orifice forming-face is completed, preliminary ejection from the wiped ejection orifices is started. The wiping and preliminary ejection are sequentially performed from a recording element substrate at one end to a recording element substrate at the other end.

A printing apparatus according to an aspect includes a printing mechanism and a control section configured to control the printing mechanism to form a different margin according to presence or absence of an abnormality of the printing mechanism and a degree of the abnormality.

A printer includes a head, a flushing receiving member, a cap, a processor, and a memory. The head is provided with a nozzle surface intersecting a discharge direction and configured to move in a main scanning direction. The flushing receiving member is positioned in the discharge direction with respect to a movement path of the head in the main scanning direction. The cap is configured to closely adhere to the nozzle surface. The cap and the flushing receiving member are arranged in the main scanning direction. The memory stores computer-readable instructions that, when executed by the processor, instruct the processor to perform a process including flushing processing including a first flushing operation of discharging ink from the head toward the cap, and a second flushing operation of discharging the ink toward the flushing receiving member while moving the head in the main scanning direction.

A printer is provided with a first nozzle surface including a first nozzle row, a second nozzle surface including a second nozzle row positioned with respect to the first nozzle row in a main scanning direction, a receiver having a width smaller than an interval between the first nozzle row and the second nozzle row, and a driver. A processor of the printer causes the driver to perform a discharge driving to discharge ink from at least one of nozzles of one of the first nozzle row or the second nozzle row, and causes the driver to perform a non-discharge driving to not discharge ink from at least one of nozzles of the other of the first nozzle row or the second nozzle row, in a state of one of the first nozzle row or the second nozzle row being caused to face the receiver in a discharge direction.

A printer that includes a platen, a head, a support plate, and an absorption body. A print medium is placed on the platen. The head includes a nozzle surface and is configured to discharge ink, in a discharge direction, from the nozzle surface. The support plate is configured to support the head. The absorption body is provided on the discharge direction of the support plate. The absorption body is exposed to the platen and is configured to absorb liquid.