Abstract: The invention is prevent drawbacks resulting from the bubble generated at the downstream side of the filter, while minimizing the waste in the ink.

Abstract: In a liquid ejecting apparatus in which ink is supplied from an ink tank to a print cartridge detachably mounted on a carriage through a tube, connection between an ink needle at a tube side and an interconnecting member at a cartridge side can sealingly be effected positively, and ink supplying and connecting means can be made compact. A closing film having a small hole and a central slit is provided at a tip end of an interconnecting member made of soft material and fitted into an ink flow-in projection portion of the print cartridge into which an ink needle is inserted. Further, a notched needle tip end avoiding configuration is provided at a lower part of a tip end of the projection portion so that abutment between the projection portion and the ink needle can be avoided when the print cartridge is mounted and dismounted, thereby reducing a shifting amount of a needle holding member.

Abstract: A method of manufacturing a liquid discharge head having an opening for discharging liquid droplets, a wall member constituting a liquid flow path to the opening, a substrate provided with and for creating a bubble in the liquid, and a movable member supported by and fixed to the substrate with the discharge opening side thereof as a free end displaced away from the substrate by pressure produced by creating the bubble to thereby direct the pressure to the discharge opening side including the steps of preparing the substrate and movable member, filling the gap between the movable member and the substrate with a liquid photo-curing resin, spin coating the resin until the resin covers the movable member, exposing an area of the resin to light to harden a portion corresponding to the wall member, and removing the unexposed portion of the photo-curing resin.

Abstract: An ink jet recording head comprises an ink tank, a nozzle for discharging ink, a liquid chamber for retaining a specific amount of ink supplied from the ink tank through a filter, while supplying ink to the nozzle, and a covering member to be bonded to the liquid chamber, and on the circumference of the liquid chamber, a groove is formed to enable bonding agent to be coated therefor, and on the circumference of the covering member, an extrusion is formed to be fitted into the groove. For this ink jet recording head, gas releasing means is provided for releasing gas remaining in the bonding agent to the outside of the groove when the covering member is bonded to the liquid chamber by fitting the extrusion into the groove after the bonding agent is coated in the groove.

Abstract: A charging circuit detects a battery voltage Vp and a charging voltage of a main condenser. When a charge of the condenser is instructed, if the battery voltage is smaller than prescribed value Vpo, the charge is performed in a single control mode. And then, when the charging voltage of the main condenser is larger than a prescribed value Vco, the mode is changed to a push-pull control mode from the single control mode. When the charge of the condenser is instructed, if the battery voltage is larger than prescribed value Vpo, the charge is performed in a push-poll control mode independent of the charging voltage.

Abstract: The present invention provides a storing structure for storing an ink jet head comprising a nozzle communicated with an opening for discharging liquid, a liquid storing portion for storing the liquid to be supplied to the nozzle, and a liquid introduction portion for introducing the liquid into the liquid storing portion from exterior, wherein, in the ink jet head, air is housed in the liquid storing portion and the liquid is contained at least in the nozzle, and a cap unit including an elastic cap for covering an area of the opening and a liquid absorbing member disposed in the elastic cap is closely contacted with and attached, around the opening, to a face in which the opening is formed, and the liquid introduction portion is communicated with atmosphere at least when inner pressure of the liquid storing portion is increased, thereby maintaining a space within the cap unit to a wetting condition.

Abstract: A cartridge is detachably mountable on holding means of an ink jet recording apparatus, which is freely reciprocating to scan for recording by discharging ink to a recording medium, and provided with a recording head for discharging ink from plural nozzles formed in parallel on the lower face of the carriage main body facing the recording medium. For the front face of the cartridge main body, an electrical connection portion having electrodes on the cartridge side is provided and electrically connected with electrodes of the holding means on holding means side, and for the rear face being opposite to the front face, an ink connection portion having supply means connected thereto is provided to supply ink to the recording head from the main tank installed on the main body of the ink jet recording apparatus.

Abstract: The present invention discloses an elastic transformable body for adjusting vapor pressure, a vapor pressure adjustment chamber using the same, an ink-jet recording head having a vapor pressure adjustment device and an ink-jet recording device having the recording head, and more particularly to a vapor pressure adjustment device for adjusting negative pressure generated in a liquid chamber in an ink-jet recording head when discharging ink. The pressure adjustment chamber has at least one elastic transformation body having a changeable volume according to vapor pressure to adjust the vapor pressure in a container communicated thereto and a support for supporting the elastic transformation body to the container.

Abstract: In a liquid injecting apparatus in which ink is supplied from an ink tank to a print cartridge detachably mounted on a carriage through a tube, connection between an ink needle at a tube side and an interconnecting member at a cartridge side can sealingly be effected positively, and ink supplying and connecting means can be made compact. A closing film having a small hole and a central slit is provided at a tip end of an interconnecting member made of soft material and fitted into an ink flow-in projection portion of the print cartridge into which an ink needle is inserted. Further, a notched needle tip end avoiding configuration is provided at a lower part of a tip end of the projection portion so that abutment between the projection portion and the ink needle can be avoided when the print cartridge is mounted and dismounted, thereby reducing a shifting amount of a needle holding member.

Abstract: A ground conductor and a signal conductor are provided in an insulating magnetic body respectively. The insulating magnetic body is a compound member that combines ferromagnetic metal particles and an insulating resin. A signal transmission element, a connector or a circuit board with high frequency stopping and low pass characteristics which will ensure reliable absorption of high frequency components in the high frequency range, can be provided. The ground conductor and the signal conductor are provided on opposite sides of the insulating magnetic body.

Abstract: A ground conductor and a signal conductor are provided in an insulating magnetic body respectively. The insulating magnetic body is a compound member that combines ferromagnetic metal particles and an insulating resin. A signal transmission element, a connector or a circuit board with high frequency stopping and low pass characteristics which will ensure reliable absorption of high frequency components in the high frequency range, can be provided.

Abstract: A ground conductor and a signal conductor are provided in an insulating magnetic body respectively. The insulating magnetic body is a compound member that combines ferromagnetic metal particles and an insulating resin. A signal transmission element, a connector or a circuit board with high frequency stopping and low pass characteristics which will ensure reliable absorption of high frequency components in the high frequency range, can be provided.

Abstract: The invention provides a method of manufacturing a hydraulic hardening material having the steps of milling vitreous blast furnace slag and classifying the milled slag to provide slag powder having a blaine specific surface area of 6,000 to 12,000 cm.sup.2 /g. The hydraulic hardening material manufactured by the method is used as a Portland blast furance cement raw material.