A liquid application apparatus includes a liquid discharge head and processing circuitry. The liquid discharge head discharges liquid. The processing circuitry causes the liquid application apparatus to sequentially move to each of a plurality of divided areas obtained by dividing a liquid application area in which the liquid discharge head performs liquid application. The processing circuitry causes the liquid discharge head to move to each of the divided areas to perform liquid application. After the liquid discharge head performs first liquid application to one divided area of the divided areas, the processing circuitry causes the liquid application apparatus to move to another one divided area adjacent to or partially overlapping the one divided area and causes the liquid discharge head to perform second liquid application to said another one divided area to connect an image generated by the first liquid application and an image generated by the second liquid application.

A recording device includes a carriage in which a recording head and a light source are mounted. The carriage is configured to reciprocate in a main scanning direction. The recording head is configured to eject photocurable ink to a medium. The light source is configured to emit light that causes the photocurable ink ejected in an outward operation to be cured. The recording device also includes a control unit configured to control an operation of the carriage. In the recording device, the control unit determines a movement range in step S140 so as to turn from the outward operation to a returning operation at a position at which an area irradiated with light by the light source does not deviate from a region of the medium where the photocurable ink is ejected, and controls movement of the carriage.

A test pattern includes a plurality of individual patterns along a main scanning direction by liquid ejection from each of a plurality of first nozzles. The individual patterns adjacent to each other in a sub scanning direction are located at positions shifted from each other in the main scanning direction. The plurality of first nozzles include a first sequential nozzle group that is sequential in the sub scanning direction and a second sequential nozzle group that is sequential in the sub scanning direction. The test pattern includes a first pattern group derived from liquid ejection from the first sequential nozzle group and a second pattern group derived from liquid ejection from the second sequential nozzle group. The control unit performs control to form the test pattern in which at least the first pattern group and the second pattern group are arranged in the main scanning direction by performing sub scanning between formation of the first pattern group and formation of the second pattern group.

A recording device includes a conveying unit that conveys a medium, a first nozzle group that discharges a first liquid to form a first layer, a second nozzle group that discharges a second liquid after formation of the first layer to form a second layer, a carriage, a detection unit that acquires an error in the conveyance amount of the medium by the conveying unit, and a control unit. A test pattern is formed using the first nozzle group. The detection unit detects the test pattern and acquires an error in the conveyance amount based on a detection position. The control unit adjusts a relative positional relationship between the first layer and the second layer by shifting, in the conveying direction, a nozzle of the second nozzle group which is used and recording the second layer based on the error in the conveyance amount.

A printing apparatus includes a first conveyance unit for conveying a print medium, a printing unit for printing by discharging ink, a second conveyance unit for conveying the print medium printed by the printing unit, and a reversal conveyance unit for reversing the print medium whose first surface is printed and conveying it to the first conveyance unit, wherein an edge region on an upstream side in a conveyance direction in a case of printing on the first surface is defined as a first edge region, and in a case that the printing unit prints on a second surface of the print medium, a conveyance speed of the print medium until the print medium from the reversal conveyance unit reaches the second conveyance unit changes depending on an ink discharge amount in the first edge region.

In a case in which a dot of a first raster line to be discharged by a first defective nozzle and a dot of a second raster line to be discharged by a second defective nozzle are determined to be adjacent to each other in a sub-scanning direction when a transport unit performs movement by a predetermined first distance, a printing device performs first control of executing either control of changing a distance of the movement performed by the transport unit immediately before the first defective nozzle forms the first raster line by an integer multiple of a nozzle pitch from the first distance, or control of changing a distance of the movement performed by the transport unit immediately before the second defective nozzle forms the second raster line by an integer multiple of the nozzle pitch from the first distance.

A liquid discharge head includes a nozzle substrate, an actuator substrate, a diaphragm, and an actuator element. The nozzle substrate has multiple nozzles arrayed in an array direction on a nozzle face to discharge a liquid from the multiple nozzles. Each of the multiple nozzles has a nozzle inlet and a nozzle outlet downstream of the nozzle inlet. The nozzle inlet has a first cross-sectional area and a first center line at a center of the nozzle inlet. The nozzle outlet has a second cross-sectional area and a second center line at a center of the nozzle outlet. The second cross-sectional area is smaller than the first cross-sectional area. The second center line is shifted from the first center line in the array direction for a shift amount that gradually increases from a center of the multiple nozzles toward each end of the multiple nozzles.

A printing apparatus, comprising a printing unit, a conveyance unit and a position detection unit, the position detection unit including a light emitting unit configured to emit light to a conveyance path of a print medium, a first light receiving unit configured to detect reflected light from the conveyance path, and a second light receiving unit configured to detect reflected light from the conveyance path, the first and the second light receiving units being arranged side by side with other in a direction crossing a conveyance direction of a print medium, and a position of a print medium in a direction crossing the conveyance direction is specified based on a difference signal between signals of the first and the second light receiving units.

A printing apparatus includes: a printing unit having a first ejection port array and a second ejection port array; and a control unit configured to execute multipass printing to print an image in a predetermined region on a printing medium by scanning the printing unit N times (N is an integer equal to or greater than 2) in a main scanning direction intersecting a sub-scanning direction, and to perform control so that, in a case where an application amount of a color material ink per unit area corresponding to the predetermined region on the printing medium is a first amount, a first ratio of an application amount of the color material ink for printing in last N/2 scans to an application amount of the color material ink for printing in first N/2 scans among the N scans for printing an image is greater than 1.

Provides a technique for a serial type liquid ejection apparatus to detect an end portion of printing paper with high accuracy. To this end, a carriage is moved at a constant speed until abutting an abutting portion while detecting an end portion of a printing medium by a sensor with high accuracy.