Abstract: A liquid discharge apparatus includes a conveyance path, a liquid discharge head, an ejection tray, and a drying device. A medium is conveyed in the conveyance path. The liquid discharge head discharges liquid onto the medium conveyed in the conveyance path. The medium is ejected to the ejection tray. The drying device dries the medium. The conveyance path includes a first bending portion to bend the medium, with a liquid-applied surface of the medium facing inward. The ejection tray includes a second bending portion to bend the medium, with the liquid-applied surface of the medium facing inward. A curvature of the medium bent by the first bending portion is greater than a curvature of the medium bent by the second bending portion. The drying device dries the medium conveyed in the first bending portion.

Abstract: An ink set comprises black ink having a static surface tension A and yellow ink having a static surface tension B, wherein the static surface tension A is 28.7 mN/m or more and greater than the static surface tension B, wherein the ink set is used in an image forming device including an inkjet head including a nozzle plate including a first nozzle array and a second nozzle array disposed adjacent to the first nozzle array, the first nozzle array including multiple first nozzles configured to discharge the black ink and a second nozzle array including multiple second nozzles configured to discharge the yellow ink wherein each nozzle of the multiple first nozzles and the multiple second nozzles has a cylindrical portion having a length of 25 ?m or longer along an axial direction with an opening on an ink discharging side of the nozzle plate.

Abstract: An ink set comprises black ink having a static surface tension A and yellow ink having a static surface tension B, wherein the static surface tension A is by 0.6 mN/m or more greater than the static surface tension B, wherein the ink set is used in an image forming device including an inkjet head including a nozzle plate including a first nozzle array and a second nozzle array disposed adjacent to the first nozzle array, the first nozzle array including multiple first nozzles configured to discharge the black ink and a second nozzle array including multiple second nozzles configured to discharge the yellow ink, wherein each nozzle of the multiple first nozzles and the multiple second nozzles has a cylindrical portion having a length of 25 ?m or longer along an axial direction with an opening on an ink discharging side of the nozzle plate.

Abstract: A liquid discharge apparatus includes a conveyance path, a liquid discharge head, and a drying device. A medium is to be conveyed on the conveyance path. The liquid discharge head discharges liquid onto the medium conveyed on the conveyance path. The conveyance path includes a switchback path and an ejection path. The switchback path switches back a conveyance direction of the medium onto which the liquid has been discharged. The ejection path conveys the medium onto which the liquid has been discharged to an ejection port. The drying device dries the medium both on the switchback path and on the ejection path.

Abstract: A head cleaner to clean a liquid discharge head including a nozzle face in which nozzles are formed includes a wiper to wipe the nozzle face by moving relative to the liquid discharge head in a wiping direction. The wiper includes a wiper sheet, a blade having a higher water repellency than the wiper sheet, and a controller that controls the wiper to perform a first wiping operation and a second wiping operation. The first wiping operation involves wiping the nozzle face with the wiper sheet without bringing the blade into contact with the nozzle face, and the second wiping operation involves wiping the nozzle face with the wiper sheet and the blade by bringing the wiper sheet and the blade into contact with the nozzle face. The controller controls the wiper to perform the second wiping operation after performing the first wiping operation at least once.

Abstract: A head cleaner to clean a liquid discharge head including a nozzle face in which nozzles are formed includes a wiper to wipe the nozzle face by moving relative to the liquid discharge head in a wiping direction. The wiper includes a wiper sheet, a blade having a higher water repellency than the wiper sheet, and a controller that controls the wiper to perform a first wiping operation and a second wiping operation. The first wiping operation involves wiping the nozzle face with the wiper sheet without bringing the blade into contact with the nozzle face, and the second wiping operation involves wiping the nozzle face with the wiper sheet and the blade by bringing the wiper sheet and the blade into contact with the nozzle face. The controller controls the wiper to perform the second wiping operation after performing the first wiping operation at least once.