Abstract: A liquid jet recording apparatus includes a liquid container that contains liquid, a jetting portion disposed at a lower level than the surface of the liquid contained in the liquid container for jetting the liquid, and a conduit for communicating the jetting portion with the liquid container. An on-off valve opens or closes the conduit to permit or block the flow of the liquid in the conduit. A liquid storing portion damps pressure fluctuations of the liquid which flows in the conduit and is disposed in the conduit between the on-off valve and the jetting portion. A pressure sensor measures the pressure of the liquid in the conduit, and a control portion controls the on-off valve to be opened or closed based on a pressure value measured by the pressure sensor.

Abstract: Provided are a liquid jet head, a carriage unit, a pressure control method, and a liquid jet recording apparatus, which are capable of increasing or decreasing pressure of liquid to an optimum value by precisely measuring the pressure of the liquid when the liquid is jetted from a nozzle. The liquid jet head includes a jetting portion (17) having a plurality of nozzles for jetting liquid (5a), a liquid storing unit (15) disposed in a conduit (6), the conduit (6) being for supplying the liquid (5a) in a liquid container (5) via a roller tube pump (7) to the jetting portion (17), the liquid storing unit (15) being for damping pressure fluctuations in the conduit (6), and a pressure sensor (22) serving as pressure measuring means disposed in the conduit (6) connecting the liquid storing unit (15) and the jetting portion (17), for measuring the pressure in the conduit (6a).

Abstract: An image forming apparatus is presented. The image forming apparatus includes an ink tank configured to store ink, a recording head configured to discharge ink stored in the ink tank onto a recording medium, an adjustment device configured to adjust the flow of ink from the ink tank to the recording head, a damper configured to temporarily store ink that is output from the ink tank to the recording head, an ink condition sensor configured to detect a condition of the ink stored in the damper, and a control device configured to adjust the adjustment device according to the condition detected by the ink condition sensor.

Abstract: A tube pump includes: an elastic tube (14); a circular arc-shaped guiding member (16) for guiding the tube (14); and at least one pressing member (15) for pressing the tube (14) against the guide member (16). The tube pump is characterized by being provided with a recessed portion (17) in a portion of the guiding member (16), in which the tube (14) is not pressurized by the pressing member (15) and can be recessed. Thus, there can be provided a tube pump in which a negative pressure inside an ink supply passage (7) can be eliminated and air can be readily prevented from entering the ink supply passage (7) when the main tank (5) is replaced, and an ink jet recording device using the tube pump.

Abstract: An ink jet head of an ink jet printer comprises an ink jet nozzle ejecting ultraviolet curing ink, a pair of ultraviolet LEDs provided on both sides of the ink jet nozzle in the moving direction for emitting ultraviolet light in order to cure the ultraviolet curing ink.

Abstract: An ink jet head (15) of an ink jet printer comprises an ink jet nozzle (24) outputting ultraviolet curing ink, a pair of ultraviolet LEDs 25a and 25b provided on both sides of the ink jet nozzle in the moving direction for emitting ultraviolet in order to cure the ultraviolet curing ink.

Abstract: Provided is a liquid jet recording apparatus which maintains a function of adjusting pressure of liquid jetted from a jetting portion toward a recording medium and which still has a simple apparatus structure. In the liquid jet recording apparatus, a pressure sensor is provided in a tube between a liquid storing portion and a roller tube pump, the pressure of liquid which flows through the tube is measured, a pressure value is sent to a control portion, the pressure value is compared with lower limit values and upper limit values stored in a definition file stored in the control portion, a corresponding drive signal is sent to a drive portion, a roller tube pump is driven in a normal direction or in a reverse direction by a drive portion, and in this way, the pressure of the liquid in a jetting portion is adjusted.

Abstract: We provide a liquid jet recording apparatus includes: a liquid container; a jetting portion for jetting the liquid disposed lower than the surface of the liquid contained in the liquid container; a conduit for communicating the jetting portion with the liquid container disposed between the jetting portion and the liquid container; an on-off valve for open or close the conduit being disposed in the conduit; a liquid storing portion for damping pressure fluctuations of the liquid which flows in the conduit disposed in the conduit between the on-off valve and the jetting portion; a pressure sensor for measuring the pressure of the liquid in the conduit disposed in the conduit between the liquid storing portion and the jetting portion; and a control portion for controlling the on-off valve to be opened or closed based on a pressure value measured by the pressure sensor.

Abstract: An ink jet head of an ink jet printer comprises an ink jet nozzle ejecting ultraviolet curing ink, a pair of ultraviolet LEDs provided on both sides of the ink jet nozzle in the moving direction for emitting ultraviolet light in order to cure the ultraviolet curing ink.

Abstract: An ink jet head (15) of an ink jet printer comprises an ink jet nozzle (24) outputting ultraviolet curing ink, a pair of ultraviolet LEDs 25a and 25b provided on both sides of the ink jet nozzle in the moving direction for emitting ultraviolet in order to cure the ultraviolet curing ink.

Abstract: A tube pump includes: an elastic tube (14); a circular arc-shaped guiding member (16) for guiding the tube (14); and at least one pressing member (15) for pressing the tube (14) against the guide member (16). The tube pump is characterized by being provided with a recessed portion (17) in a portion of the guiding member (16), in which the tube (14) is not pressurized by the pressing member (15) and can be recessed. Thus, there can be provided a tube pump in which a negative pressure inside an ink supply passage (7) can be eliminated and air can be readily prevented from entering the ink supply passage (7) when the main tank (5) is replaced, and an ink jet recording device using the tube pump.

Abstract: An ink jet head of an ink jet printer comprises an ink jet nozzle ejecting ultraviolet curing ink, a pair of ultraviolet LEDs provided on both sides of the ink jet nozzle in the moving direction for emitting ultraviolet light in order to cure the ultraviolet curing ink.

Abstract: An inkjet printer with a cutting head comprises a linear motion rail, and a linear motion block slidably provided on the linear motion rail. An inkjet head carriage holding an inkjet head and a cutting head carriage holding a cutting head are fixed to the linear motion block through respective mounting parts and moved along the linear motion rail.

Abstract: Abstract of the Disclosure An ink jet head (15) of an ink jet printer comprises an ink jet nozzle (24) outputting ultraviolet curing ink, a pair of ultraviolet LEDs 25a and 25b provided on both sides of the ink jet nozzle in the moving direction for emitting ultraviolet in order to cure the ultraviolet curing ink.

Abstract: An inkjet printer with a cutting head comprises a linear motion rail, and a linear motion block slidably provided on the linear motion rail. An inkjet head carriage holding an inkjet head and a cutting head carriage holding a cutting head are fixed to the linear motion block through respective mounting parts and moved along the linear motion rail.

Abstract: An ink jet head of an ink jet printer comprises an ink jet nozzle ejecting ultraviolet curing ink, a pair of ultraviolet LEDs provided on both sides of the ink jet nozzle in the moving direction for emitting ultraviolet light in order to cure the ultraviolet curing ink.