Abstract: An ink jet apparatus includes: a head that discharges liquid; a circuit substrate that has a drive circuit for driving the head; a heat sink which has a part that is in direct or indirect contact with the circuit substrate and is able to dissipate heat generated in the circuit substrate; and a fan that generates air flow capable of cooling the heat sink. The heat sink is configured such that the air flow is not directly blown against the drive circuit and such that the air flow having changed a direction after blown against the heat sink is not blown against the drive circuit.

Abstract: A liquid ejecting apparatus includes a first passage through which liquid flows from a tank to liquid ejecting heads; and a second passage through which liquid flows from the heads to the tank. The first passage includes a third passage connecting to the tank, a fourth passage branching from the third passage at a first position to allow the third passage to communicate with a first head, and a fifth passage branching from the third passage at a second position to allow the third passage to communicate with a second head. The lengths, cross-sectional areas, and resistances of various passages are set relative to others.

Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.

Abstract: A printing apparatus which performs printing by ejecting liquid onto a printing medium includes a gas flow generating section that generates a gas flow to collect and exhaust liquid not used for printing, and a gas-liquid separation cyclone that swirls the gas flow so that the liquid is centrifugally separated from a gas which moves along the gas flow, wherein the gas flow generating section exhausts the gas along the gas flow after the liquid is separated from the gas by the gas-liquid separation cyclone.

Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.

Abstract: An ink jet recording method includes ejecting an ultraviolet-ray curable ink of which a viscosity at 28° C. is 8 mPa·s or more from a head to a recording medium, and curing the ultraviolet-ray curable ink attached to the recording medium, wherein, in the ejecting of the ultraviolet-ray curable ink, the ultraviolet-ray curable ink is heated such that a temperature of the ejected ultraviolet-ray curable ink becomes 28° C. to 40° C., and a viscosity of the ultraviolet-ray curable ink at the temperature is 15 mPa·s or less.

Abstract: There is provided a liquid discharging apparatus which includes a discharge head that includes a nozzle forming surface on which nozzles for discharging liquid are formed; a wiping member that performs wiping by relatively moving on the nozzle forming surface while abutting on the nozzle forming surface; a cleaning liquid supply unit that supplies cleaning liquid provided for the wiping; and a control unit that performs reciprocating wiping control which performs the wiping by causing the wiping member for holding the cleaning liquid supplied from the cleaning liquid supply unit to perform a reciprocating operation in which, after relative movement is performed in a first direction along the nozzle forming surface, relative movement is performed in a second direction which is opposite to the first direction.

Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.

Abstract: A filter unit includes: a space portion, through which a liquid passes, whose outer cross-sectional shape when cut along the direction orthogonal to the axial direction is circular or polygonal; a filter provided at the surface on one end side of the space portion in the axial direction thereof; a protruding member, provided at the surface on the other end side of the space portion in the axial direction thereof, that protrudes toward a center area of the surface on the one end side of the space portion; an inflow channel that allows the liquid to flow into the space portion from a direction tangential to the side circumferential surface of the space portion; and an outflow channel that allows the liquid to pass through the filter and flow out from the space portion.

Abstract: A liquid ejecting apparatus includes a first passage through which liquid flows from a tank to liquid ejecting heads; and a second passage through which liquid flows from the heads to the tank. The first passage includes a third passage connecting to the tank, a fourth passage branching from the third passage at a first position to allow the third passage to communicate with a first head, and a fifth passage branching from the third passage at a second position to allow the third passage to communicate with a second head. The lengths, cross-sectional areas, and resistances of various passages are set relative to others.

Abstract: There is provided a liquid discharging apparatus which includes: a discharge head that includes a nozzle forming surface on which nozzles for discharging liquid are formed; a wiping member that performs wiping by relatively moving on the nozzle forming surface in a state in which a wiping surface abuts on the nozzle forming surface; a cleaning liquid supply unit that supplies cleaning liquid to a liquid supplied surface which is a different surface from the nozzle forming surface and with which the wiping surface can come into contact; and a control unit that causes the wiping surface to abut on the liquid supplied surface to which the cleaning liquid is supplied, and then causes the wiping surface to relatively move on the nozzle forming surface in a state in which the wiping surface abuts on the nozzle forming surface.

Abstract: A liquid ejecting apparatus including a main tank configured to agitate a liquid accommodated in the main tank; a sub tank configured to receive the liquid supplied from the main tank; heads that eject the liquid supplied from the sub tank; and a liquid supply tube having connector tubes that branch off to the heads respectively; a pump that sucks liquid from the main tank and discharges such liquid to the sub tank; and a valve separated from the pump that operates to allow or restrict flow of the liquid between the main tank and the sub tank. The main ink tank may include a drawer assembly, a portion of which is manually movable to agitate the liquid. The main tank may have a capacity that is greater than that of the sub tank.

Abstract: A liquid feed valve unit is configured to switch between a releasing mode for forcibly opening a valve and a blocking mode for closing the valve, and the valve can therefore be opened and closed in a short time as needed. Since the releasing mode is implemented by pushing the peripheral part and the pressure-receiving part of the flexible member, the flexible member can be prevented from flexing toward the outside of the liquid accommodating chamber even in the case that the pressure-receiving part is pushed. In this case, since a residual pressure can be prevented from forming in the liquid accommodating chamber, there is no need to suspend operation, and it is possible to immediately proceed to the next operation. A fast-operating liquid feed valve unit can thereby be obtained.

Abstract: A mist collection device capable of suctioning and recovering mist generated at the time of ejecting a liquid is disclosed. The mist collection device includes an exhaust duct having a suction portion which is installed to extend downwardly to suction external air. The suction portion is provided with a suction port extending in a vertical direction, and an upper end portion, which communicates with the exhaust duct, of the suction portion is installed to protrude in an annular shape from an inner bottom portion of the exhaust duct.

Abstract: There is provided an ink cartridge which is formed from an ink-filled ink pack and a hermetic outer shell case for housing the ink pack and which supplies ink to a recording head by means of application of air pressure to a space between the outer shell case and the ink pack. The outer shell case is formed by coupling an upper case and a lower case together. The ink-filled ink pack is housed in the lower case, and the upper case is laid on the lower case from above. The upper and lower cases are hermetically sealed by vibratory welding or heat welding, thus constituting the ink cartridge.

Abstract: A mist collecting apparatus which sucks and collects mist that is generated due to ejection of a liquid includes: an exhaust duct from which a suction unit for sucking outside air extends downward; and a liquid absorbing member which is mounted to the suction unit so that a lower end portion thereof is disposed on an outside of the exhaust duct and an upper end portion thereof is disposed in the exhaust duct, wherein a suction pressure of the liquid absorbing member on a liquid by capillary force is equal to or greater than a difference between hydraulic heads of an upper and a lower end of the liquid absorbing member.

Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.

Abstract: When filling a printing head with ink, ink in a sub-tank is circulated through a forward path port, a forward path, the printing head, a return path, a return path port, and the sub-tank by pumping ink from the forward path port side to the printing head side by a circulation pump in a state where a plurality of nozzles is sealed by bringing a contact member of a capping device into contact with a nozzle formation surface. Thereafter, sealing of the plurality of nozzles by the capping device is released while pressurizing the sub-tank by a pressure adjusting device.

Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.

Abstract: A liquid ejecting apparatus provided with N (N?2) liquid ejecting heads which eject liquid, the liquid ejecting apparatus including a supply path through which liquid is supplied from a tank to the N liquid ejecting heads, a circulation path through which liquid is returned from the liquid ejecting heads to the tank, N opening and closing valves that are installed for each liquid ejecting head on at least one of the supply path and the circulation path, and a liquid sending unit that applies a force sending the liquid from the tank toward the liquid ejecting heads. M opening and closing valves corresponding to M (M<N) liquid ejecting heads selected as cleaning targets are selected to be opened among the N opening and closing valves and the liquid sending unit is driven, to selectively send liquid to the M liquid ejecting heads of the cleaning targets among the N liquid ejecting heads, thereby performing cleaning.