Abstract: An inkjet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, a cleaning liquid flow path, and a controller. The cleaning liquid flow path includes a vertical tubular member connected to the cleaning liquid supply device and extending upward, and a horizontal tubular member connected to an upper end of the vertical tubular member and extending in a horizontal direction. The controller extrudes a cleaning liquid in at least a part of the cleaning liquid flow path from a cleaning liquid supply port before control of a cleaning operation for wiping an ink ejection surface of the recording head, thereby performing control of an air bubble release operation of the cleaning liquid flow path.

Abstract: The inkjet recording apparatus includes a conveyance belt, a conveyance plate, a suction unit, an inkjet head, and a cleaning unit. The conveyance belt has a plurality of through holes. The conveyance plate includes a plurality of through holes formed in bottom portions of the plurality of recessed portions. The suction unit is configured to suck the sheet to the conveyance belt. The inkjet head includes a head main body and a head end portion adjacent to the head main body, and faces an upper surface of the conveyance plate via the conveyance belt. The cleaning unit removes ink adhering to a lower surface of the head main body. A depth of the recessed portion in a facing region facing the head end portion of the conveyance plate is shallower than a depth of the recessed portion in a region other than the facing region.

Abstract: The inkjet recording apparatus includes a conveyance belt, a conveyance plate, a suction unit, an inkjet head, and a cleaning unit. The conveyance belt has a plurality of through holes. The suction unit causes the conveyance belt to suck the sheet. The conveyance plate includes a plurality of through holes formed in bottom portions of the plurality of recessed portions. The inkjet head includes a head main body and a head end portion adjacent to the head main body, and faces an upper surface of the conveyance plate via the conveyance belt. The cleaning unit removes ink adhering to a lower surface of the head main body. A ratio of the recessed portions per unit area in a facing region of the conveyance plate facing the head end portion is smaller than a ratio of the recessed portions per unit area in a region other than the facing region.

Abstract: An inkjet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, a cleaning liquid flow path, and a controller. The cleaning liquid flow path includes a vertical tubular member connected to the cleaning liquid supply device and extending upward, and a horizontal tubular member connected to an upper end of the vertical tubular member and extending in a horizontal direction. The controller extrudes a cleaning liquid in at least a part of the cleaning liquid flow path from a cleaning liquid supply port before control of a cleaning operation for wiping an ink ejection surface of the recording head, thereby performing control of an air bubble release operation of the cleaning liquid flow path.

Abstract: An ink jet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, and a controller. The recording head includes an ink ejection surface having an ink ejection port from which ink is ejected. The cleaning liquid supply device includes a cleaning liquid supply surface having a cleaning liquid supply port from which cleaning liquid for wiping the ink ejection surface with the wiper member is supplied, and is located upstream of the ink ejection surface in a wiping direction. The controller controls a cleaning operation including squeezing out the cleaning liquid containing bubbles from the cleaning liquid supply port, and moving the wiper member carrying the cleaning liquid containing bubbles, in the wiping direction from a movement start position to an end position ahead of the ink ejection surface.

Abstract: An inkjet recording apparatus includes an ink ejection surface, a washing liquid storage portion, a washing liquid nozzle, a mesh sheet, and a sponge member. The washing liquid storage portion includes a supply surface adjacent to the ink ejection surface. The washing liquid nozzle includes a communicating hole that is communicated from a supply port formed in the supply surface to an inside of the washing liquid storage portion, and forms a concave meniscus by a surface of the washing liquid in the communicating hole. The mesh sheet is provided in close contact with an opposite rear surface of the supply surface, and has an opening that is smaller in size than an inner diameter of the communicating hole. The sponge member is provided in a compressed state in the inside of the washing liquid storage portion, presses the mesh sheet toward the opposite rear surface of the supply surface.

Abstract: A wiping device wipes off ink attached to an ink discharge surface of a recording head. The wiping device includes a wiper. The wiper wipes off ink attached to the ink discharge surface of the recording head. The wiper is formed of a material having elasticity. The wiper includes a blade pressed to the ink discharge surface. The blade has a shape easily deformed in a direction perpendicular to the ink discharge surface.

Abstract: A recording head of the present disclosure includes an ink ejection surface where a plurality of ink ejection ports for ejecting ink onto a recording medium are disposed. A plurality of cleaning liquid supply ports for supplying a cleaning liquid are disposed on an upstream side with respect to the ink ejection ports in a wiping direction which is a direction in which a wiper wipes the ink ejection surface. The plurality of cleaning liquid supply ports each have a chamfer portion formed at a portion thereof that intersects a surface to be wiped by the wiper, the chamfer portion being R-shaped in section.

Abstract: An inkjet recording apparatus includes an ink ejection surface, a washing liquid storage portion, a washing liquid nozzle, a mesh sheet, and a sponge member. The washing liquid storage portion includes a supply surface adjacent to the ink ejection surface. The washing liquid nozzle includes a communicating hole that is communicated from a supply port formed in the supply surface to an inside of the washing liquid storage portion, and forms a concave meniscus by a surface of the washing liquid in the communicating hole. The mesh sheet is provided in close contact with an opposite rear surface of the supply surface, and has an opening that is smaller in size than an inner diameter of the communicating hole. The sponge member is provided in a compressed state in the inside of the washing liquid storage portion, presses the mesh sheet toward the opposite rear surface of the supply surface.

Abstract: An inkjet recording apparatus includes an ink ejection surface and a cleaning liquid nozzle. The ink ejection surface has an ink ejection port through which ink is ejected. The cleaning liquid nozzle has a cleaning liquid supply port through which cleaning liquid for cleaning the ink ejection surface is supplied. In the cleaning liquid nozzle, a concave meniscus is formed on a surface of the cleaning liquid.

Abstract: In an inkjet recording apparatus, a recording head has an ink ejection port through which ink is ejected, a cleaning liquid supplying portion has a cleaning liquid supply port through which cleaning liquid for cleaning an ink ejection surface having the ink ejection port, is supplied, and a cleaning member cleans the ink ejection surface by the cleaning liquid by moving while in contact with the ink ejection surface. The cleaning liquid supplying portion includes a main body portion and a protruding portion. The main body portion is disposed on an upstream side of the recording head in a moving direction of the cleaning member. The protruding portion protrudes from the main body portion toward a downstream in the moving direction, and covers, from below, lower ends of side surfaces of the recording head and the main body portion that face each other in the moving direction.

Abstract: A recording head of the present disclosure includes an ink ejection surface where a plurality of ink ejection ports for ejecting ink onto a recording medium are disposed. A plurality of cleaning liquid supply ports for supplying a cleaning liquid are disposed on an upstream side with respect to the ink ejection ports in a wiping direction which is a direction in which a wiper wipes the ink ejection surface. The plurality of cleaning liquid supply ports each have a chamfer portion formed at a portion thereof that intersects a surface to be wiped by the wiper, the chamfer portion being R-shaped in section.

Abstract: An inkjet recording apparatus includes an ink ejection surface and a cleaning liquid nozzle. The ink ejection surface has an ink ejection port through which ink is ejected. The cleaning liquid nozzle has a cleaning liquid supply port through which cleaning liquid for cleaning the ink ejection surface is supplied. In the cleaning liquid nozzle, a concave meniscus is formed on a surface of the cleaning liquid.

Abstract: In an inkjet recording apparatus, a recording head has an ink ejection port through which ink is ejected, a cleaning liquid supplying portion has a cleaning liquid supply port through which cleaning liquid for cleaning an ink ejection surface having the ink ejection port, is supplied, and a cleaning member cleans the ink ejection surface by the cleaning liquid by moving while in contact with the ink ejection surface. The cleaning liquid supplying portion includes a main body portion and a protruding portion. The main body portion is disposed on an upstream side of the recording head in a moving direction of the cleaning member. The protruding portion protrudes from the main body portion toward a downstream in the moving direction, and covers, from below, lower ends of side surfaces of the recording head and the main body portion that face each other in the moving direction.

Abstract: A developing device includes a developing roller, a toner supplying roller, a regulation blade, a casing, a toner receiver support member, a toner receiver member, and a vibration generator. The toner receiver member is disposed along a longitudinal direction of the toner receiver support member facing the developing roller, and has a toner receiving surface inclined downward from the image-carrier side toward the toner-supplying-roller side. The toner receiving surface is disposed to be inclined so as to rise from the toner-supplying-roller side toward the image-carrier side. The toner receiving surface has a plurality of grooves formed therein to be inclined to approach a center part of the toner receiving surface from each end side of the toner receiving surface in its longitudinal direction, from an edge of the toner receiving surface on the image-carrier side toward an edge of the toner receiving surface on the toner-supplying-roller side.

Abstract: A developing device of the present disclosure includes a developing roller, a toner supplying roller, a regulation blade, a casing, a toner receiver support member, a toner receiver member, and a vibration generator. The toner receiver support member is disposed inside the casing so as to face the developing roller or the toner supplying roller between the regulation blade and an image carrier. The toner receiver member is disposed along a longitudinal direction of the toner receiver support member, and has a toner receiving surface that receives toner falling from the developing roller. The vibration generator vibrates the toner receiver member. At each end part of the toner receiving surface in its longitudinal direction, there is formed a thin-walled portion that is thinner in thickness than other parts of the toner receiving surface.

Abstract: A developing device of the present disclosure includes a developing roller, a toner supplying roller, a regulation blade, a casing, a toner receiver support member, a toner receiver member, and a vibration generator. The toner receiver support member is disposed inside the casing so as to face the developing roller or the toner supplying roller between the regulation blade and an image carrier. The toner receiver member is disposed along a longitudinal direction of the toner receiver support member, and has a toner receiving surface that receives toner falling from the developing roller. The vibration generator vibrates the toner receiver member. At each end part of the toner receiving surface in its longitudinal direction, there is formed a thin-walled portion that is thinner in thickness than other parts of the toner receiving surface.

Abstract: A developing device includes a developing roller, a toner supplying roller, a regulation blade, a casing, a toner receiver support member, a toner receiver member, and a vibration generator. The toner receiver member is disposed along a longitudinal direction of the toner receiver support member facing the developing roller, and has a toner receiving surface inclined downward from the image-carrier side toward the toner-supplying-roller side. The toner receiving surface is disposed to be inclined so as to rise from the toner-supplying-roller side toward the image-carrier side. The toner receiving surface has a plurality of grooves formed therein to be inclined to approach a center part of the toner receiving surface from each end side of the toner receiving surface in its longitudinal direction, from an edge of the toner receiving surface on the image-carrier side toward an edge of the toner receiving surface on the toner-supplying-roller side.

Abstract: A recovery system for a recording head according to the present disclosure includes a wiper, a drive mechanism, and a control portion. The control portion is able to execute a recovery operation for the recording head that includes an ink pushing-out operation that forcibly pushes out ink, a first wiping operation that moves the wiper in a first direction to wipe away purged ink, and a second wiping operation that moves the wiper in a direction opposite to the first direction to wipe away remaining ink. The wiper includes a first wiping surface disposed to face in the first direction, a second wiping surface disposed to face in a direction opposite to the first direction, and an upper surface. The first wiping surface and the upper surface have a high water repellency compared with the second wiping surface.

Abstract: A recovery system for a recording head according to the present disclosure includes a wiper, a drive mechanism, and a control portion. The control portion is able to execute a recovery operation for a recording head that includes a first ink pushing-out operation that forcibly pushes out ink, a first wiping operation that wipes away purged ink, and a second wiping operation that moves the wiper in a direction opposite to the first direction. The wiper includes a first wiping surface, a second wiping surface, and an upper surface. The upper surface is provided with a first step portion that becomes higher from a first upper end portion of the first wiping surface to a second upper end portion of the second wiping surface.