Abstract: When a second cylindrical unit 38 of a second connection unit 11 is pushed into a first cylindrical unit 16 of a first connection unit 15, a sliding member 23 moves along an axis member. With the timing, the position of a moving aperture 22 formed on the sliding member 23 moves from the first position not opposite a first aperture 19 and a second aperture 51 to the second position opposite the first aperture 19 and the second aperture 51.

Abstract: This invention provides an adjusting method for use in a recording apparatus having a configuration where head units, in each of which a plurality of recording heads are arranged in a direction (main scanning direction) orthogonal to a moving direction (sub-scanning direction) of a recording medium relative to the recording heads so that ends of recordable regions of the recording heads partially overlap or contact when viewed in a conveyance direction of the recording medium, are arranged by a number equal to the number of recording colors in parallel in the sub-scanning direction, comprising adjusting quality of an image recorded on the recording medium by changing a positional relationship of a predetermined recording pattern, which is recorded on the recording medium with each of the recording heads, within each of the head units and/or among the plurality of head units.

Abstract: An image forming apparatus performs an image forming operation by driving a ejecting element of a recording head with an ink ejecting drive voltage for ejecting ink, detects a temperature of ink to be flown into the recording head and a temperature of ink to be discharged respectively with a first temperature detection section and a second temperature detection section, and corrects the ink ejecting drive voltage on the basis of a temperature of ink being heat-transferred with the ejecting element, which is estimated with a predetermined conversion formula on the basis of the detected ink temperatures, for controlling an ink amount to be ejected.

Abstract: A long-life pump capable of simultaneously conveying plural liquids and an inkjet printer having the pump are provided. The liquid pump includes: a liquid storage unit having liquid chambers trapping at least two types of liquids with each chamber corresponding to the type of the trapped liquid; a coupling member for connection to each liquid chamber of the liquid storage unit; a pressure adjusting mechanism, connected to the coupling member, for alternately switching between a negative pressure and a positive pressure of an internal pressure of the liquid chamber; an inlet valve capable of passing the liquid to the liquid chamber; an outlet valve discharging the liquid in the liquid chamber; and a pass resistance variable mechanism adjusting an amount of the liquid trapped in the liquid chamber depending on a level of the liquid in the liquid chamber.

Abstract: An ink-jet recording apparatus is provided with an ink tank, a recording head, an ink passage extending from the ink tank to the recording head, and a sub-tank arranged on the ink passage. The apparatus has a first ink passage, a second ink passage, and an ultrasonic transducer. The first ink passage supplies ink from the ink tank to the sub-tank. The second ink passage has an ink outlet port, through which the ink is drawn from the sub-tank into the recording head. The ultrasonic transducer applies ultrasonic vibration to the ink contained in the sub-tank. The ink outlet port of the second ink passage is arranged near the ultrasonic transducer.

Abstract: An apparatus includes: a recording unit for holding an ink head capable of jetting liquid ink to a recording medium; a feeding mechanism arranged opposite the recording unit and feeding the recording medium having at least a feed belt, a driving roller and a driven roller for providing the feed belt, a support frame for holding the driving roller and the driven roller; and a feed roller feeding the recording medium by correcting feeding posture of the recording medium to the feeding mechanism. The support axis of the feed roller is held by a support frame of the feeding mechanism.