Abstract: The mounting structure for mounting the piezo-electric device (106) used to detect the consumption condition of the liquid in the liquid container (1) to the liquid container (1), having the receiving portion (363) to which the piezoelectric device (106) is to be mounted and the mount portion (363) to be mounted to the liquid container (1). The mounting structure can appropriately mount a piezo-electric device (106) for detecting the consumption condition of a liquid in a liquid container (1) to the liquid container (1).

Abstract: An ink jet recording apparatus in which a nozzle ink jet recording head provided with a nozzle plate provided with apertures for jetting an ink droplet and a capping device provided with a cap unit for sealing the apertures of the nozzle plate when the recording apparatus is not used are mounted, in which in the cap unit of the capping device, in a sealed state, an ink suction port for supplying negative pressure for exhausting ink from a nozzle aperture if necessary is arranged at the bottom and an atmospheric air open port for releasing negative pressure is arranged on one side and in which a porous plate provided with plural through holes for adjusting the distribution of pressure in the longitudinal direction of the cap unit is housed between the inner bottom face and the upper open face of the cap unit and further, an ink suction method of a recording head are provided.

Abstract: An ink-jet recording apparatus having an ink-jet recording head including pressure generating chambers communicatively connected to a nozzle opening and a reservoir, pressure generating means for pressurizing the pressure generating chambers, and control means for applying drive signals corresponding to print data to the recording head and for minutely vibrating meniscuses of ink in the nozzle openings to such an extent as to not eject ink droplets during a nonprint period. The control means ejects ink droplets from the nozzle openings in accordance with print data during printing operations, and minutely vibrates meniscuses of ink formed at the nozzle openings a preset period of time before or after the discharging of the ink droplets in a printing operation.

Abstract: An ink jet recording apparatus in which a nozzle ink jet recording head provided with a nozzle plate provided with apertures for jetting an ink droplet and a capping device provided with a cap unit for sealing the apertures of the nozzle plate when the recording apparatus is not used are mounted, in which in the cap unit of the capping device, in a sealed state, an ink suction port for supplying negative pressure for exhausting ink from a nozzle aperture if necessary is arranged at the bottom and an atmospheric air open port for releasing negative pressure is arranged on one side and in which a porous plate provided with plural through holes for adjusting the distribution of pressure in the longitudinal direction of the cap unit is housed between the inner bottom face and the upper open face of the cap unit and further, an ink suction method of a recording head are provided.

Abstract: Driving signal generating member for generating a first signal for drawing as meniscus at a nozzle aperture by smaller force as ambient temperature rises, a second signal for contracting a pressure generating chamber and ejecting an ink droplet and a third signal for restoring the contracted pressure generating chamber after an ink droplet is ejected by larger drawing force as ambient temperature rises is provided, speed at which the meniscus is moved toward the nozzle aperture is prevented from decreasing by setting force for drawing the meniscus before an ink droplet is ejected when temperature falls to a large value and the delay of filling the pressure generating chamber with ink is prevented by setting force for drawing the meniscus after an ink droplet is ejected to a small value and damping the residual vibration of the meniscus utilizing attenuation by increasing the viscosity of ink.

Abstract: An ink jet recording head is disclosed. The recording head comprises a reservoir for storing ink which is supplied into a plurality of pressure generating chambers arranged in a first direction, a slit-shaped air bubble guide groove communicated with the reservoir and extending in the first direction, an ink supply member communicating the air bubble guide groove with the pressure generating chambers, pressure generation unit for generating pressure to be applied to the ink in the pressure generating chambers, and a nozzle plate in which nozzle orifices in communication with the pressure generating chambers are formed for ejecting the ink pressurized by the pressure generation unit.