Matsushita Electric Industrial Co., Ltd.

Other

Miyata Industry Co., Ltd.

Kiyoshi Yamamori

Akira Mizoguchi

Yoshikazu Kawauchi

Takuhiro Ono

Shigeru Takeyama

Masayoshi Miura

Yasushi Usui

Satoshi Yamamoto

Shigeyoshi Hasegawa

Sadashi Higuchi

Mitsugu Tsuyuki

Hiroyuki Takahashi

Tamotsu Kojima

Yasutaka Hiromori

Norimasa Eto

Takuro Koyama

Yuuji Mogi

Hideo Nomura

Kimikatsu Satoh

The present invention relates to a gas generator for an air bag apparatus mounted in a vehicle or the like for protecting an occupant in the vehicle by charging gas into the air bag interposed between the occupant and a vehicle member at the time of collision of the vehicle. The gas generator for the air bag of the present invention comprises a first chamber ( ) accommodating a flammable fluid ( ) having a first vent opening ( ) which is in communication with the air bag ( ), a second chamber ( ) accommodating the flammable fluid ( ) and having a volume greater than that of the first chamber ( ), a first occluding member ( ) for occluding the first vent opening ( ), and an ignition device ( ) for igniting the flammable fluid ( ) in the first chamber ( ). By burning at least a portion of the flammable fluid ( ) in the first chamber ( ), the fluid in the first chamber ( ) and the second chamber ( ) is discharged out through the first vent opening ( ), thereby inflating the air bag ( ). Therefore, since the first occluding member is swiftly destroyed and burnt fluid mixture in the first chamber is discharged, it is possible to shorten the initial responding time at which the air bag starts inflating.

Gas generating device for air bag and air bag inflating method

A gas generating apparatus for an air bag apparatus mounted in a vehicle or the like for introducing a gas into an air bag to inflate the same for protecting a passenger in the vehicle. The gas generating apparatus for the air bag apparatus according to the present invention ignites and burns a combustible fluid to increase its temperature to increase its pressure for inflating an air bag. The gas generating apparatus for the air bag apparatus includes accommodating device (,) and (,) each for accommodating a combustible fluid (,), a vent opening provided in one of the accommodating device (,), and an occluding member (,) having an igniting portion (,) directed inward of the accommodating device (,). A pressure in the accommodating device is increased by burning the combustible fluid to reliably break the occluding member so that a combustion fluid mixture can effectively and swiftly be supplied to the air bag.

Gas generating device for air bag apparatus

The present invention relates to a gas generating apparatus for an air bag apparatus mounted in a vehicle or the like for protecting a passenger of the vehicle by charging a gas into an air bag interposed between the passenger and an interior member of the vehicle chamber so as to inflate the air bag at the time of collision of the vehicle. The gas generating apparatus for the air bag apparatus includes a first chamber,which accommodates a combustible fluid,and which is provided with a first vent opening,leading to the air bag,; a second chamber,larger than the first chamber,; a first occluding member,for occluding the first vent opening,; and an ignition device,for igniting the combustible fluid in the first chamber,. By burning at least a portion of the combustible fluid,within the first chamber,, the fluid in the first and second chambers,and,is discharged through the first vent opening,to inflate the air bag,. Since, the first occluding member is swiftly broken to discharge a mixture of the combustible fluid in the first chamber, it is possible to shorten the initial responding time period required to start inflating the air bag.

Gas generating apparatus for air bag apparatus and method for inflating air bag

A charging method of a combustible gas and an oxidizer gas includes the steps of charging the combustible gas, and charging the oxidizer gas, both into a container through a charging port provided to the container. During at least one of two charging steps, a composition of a combustible mixed gas created in the vicinity of the charging port is controlled in a nonflammable range.

Charging method and charging structure of combustible gas and oxidizer

A charging structure of a combustible gas and an oxidizer gas includes a container for containing the combustible and oxidizer gases therein. The container has a charging port for charging the combustible and oxidizer gases. The charging structure also includes a sealing member for sealing the charging port and a separating member for substantially separating the combustible gas and the oxidizer gas at least in the vicinity of the charging port during a predetermined time period beginning, from a time point after charging of the combustible and oxidizer gases into the container through the charging port to a time point when the charging port is sealed by the sealing member. The separating member defines a flow path such that the combustible gas and the oxidizer gas are not substantially mixed therein during the predetermined time period in such a case where one of the combustible and oxidizer gases is first charged and thereafter the other of the combustible and oxidizer gases is charged.

Disclosed is an ink jet recording apparatus of the type wherein printing ink is discharged from an ink nozzle of an ink jet printing head toward recording paper wrapped around a drum. The ink jet recording apparatus comprises first and second plates placed to be spaced each other and an ink droplet guiding member one end of which is placed in contact with a lower portion of the front surface of the ink jet printing head, the second plate acting as a member for supporting the ink jet printing head. The first plate has an aperture so that the other end of the ink droplet guiding member reaches the second plate through the aperture of the first plate. With this arrangement, ink attached to the surface of the ink jet printing head can be removed by flowing down through the ink droplet guiding member and the second plate.

Ink jet recording apparatus with a device for removing ink attached to

An ink ejection recording apparatus is disclosed which comprises a plurality of ink ejection heads commonly connected to an ink tank, each of the ink ejection heads having an ink nozzle through which minute ink droplets are discharged in accordance with an electric signal and an air nozzle opposing to the ink nozzle and adapted for forming an air stream which accelerates the ink droplets towards a recording medium so as to record an image on the recording medium by means of the droplets. The ink ejection heads are arranged at different heights and the ink ejection heads have different levels of balance pressure so that the levels of the ink pressure acting on the ink nozzles of the ink ejection head are equalized in the operating state of the apparatus. Pressure relieving means are provided for relieving pneumatic pressure applied to the ink ejection heads and to the ink tank and being arranged such that relief of pressure from said ink tank is conducted after relief of pressure from said ink ejection heads.

Ink ejection recording apparatus having means for equalizing the static

An ink jet recording apparatus has an ink jet unit from which tiny independent ink droplets, suspended by a flow of air, are made to fly towards a recording medium, thereby recording information on the medium. The apparatus has a heat washing unit disposed at a position beyond one end of a recording medium mounting portion, so that the ink jet unit which has been moved to this position after completion of the recording operation is washed by the head washing unit which is movable towards and away from the ink jet unit at this position, whereby a high stability and reliability of the ink jet recording are ensured for a long period of time without suffering from clogging of nozzles or contamination of the recording medium. The stability and reliability are further enhanced by the simultaneous use of an ink mist suction unit which sucks ink mist around the ink jet unit and an anti-clogging unit which prevents clogging of the nozzles.

Ink jet recording apparatus with head washing device

In order to prevent clogging of the nozzle of an ink jet writing head, a nozzle moistening device is provided which includes an elastic enclosure fluid-tightly engageable with the front face of the writing head when not in use, a source of water, and a capillary tube for transmitting water from the source to the enclosure by capillary action to permit evaporation of water in the enclosure to moisten the nozzle.

Ink jet writing apparatus having a nozzle moistening device

An ink jet writing head includes a housing shaped to provide an inner liquid chamber for containing ink therein, a piezoelectric transducer for generating short-duration pressure rises in the liquid in the inner chamber, and an outer liquid chamber which is separated by a dividing plate from the inner liquid chamber and connected thereto by a connecting channel formed in the dividing plate. The outer liquid chamber is of such an axial dimension that it may provide capillary action on the ink supplied from an ink supply source. The outer chamber is formed by an ink nozzle plate secured to a surface of the housing spaced from the dividing plate. The ink nozzle is axially aligned with the connecting channel to cause the ink in the outer chamber to leave the writing head in response to the pressure rise in the inner chamber. A spacer is provided in the other liquid chamber to maintain the axial dimension thereof at a predetermined value regardless of errors which might be produced during manufacture of the housing and assemblage of the writing head.

Ink jet writing head with spacer in capillary chamber

An ink ejection apparatus comprising an ink ejection unit having a liquid chamber connected to an ink container through a conduit and an air chamber connected to a source of pressurized air. Axially aligned discharge channels are provided to allow the ink in the liquid chamber to be discharged through the discharge channels. A piezoelectric transducer is mounted adjacent to the liquid chamber to generate rapid pressure increases therein to permit ejection of ink droplets to the atmosphere in response to electrical signals. The ink container is also supplied with the pressurized air from the air supply source so that there is a constant stream of air through the discharge channel and there is a static pressure balance between the air and liquid chambers when the air supply source is in operation. To eliminate the problem of pressure imbalance which could occur at the instant the air supply source is energized or de-energized, an arrangement is provided to impart a retarding action to the transitory variation of the pressure in the conduit.

Ink ejection apparatus

A liquid ejection system comprises a writing head having a liquid chamber for containing liquid therein, a liquid discharge channel, an electromechanical transducer for generating pressure rises in the liquid in the liquid chamber for discharging the liquid through the liquid discharge channel, an air chamber having an air discharge channel coaxially aligned with the liquid discharge channel for discharging dry air from the air chamber along the passage of the ejected liquid. A humidifier, which is operative during the standby mode of the system, is provided to humidify the air supplied to the air chamber. A closing member is mounted with respect to the writing head and operative to close its air discharge channel during the standby mode to direct the humidified air through the exit side of the liquid discharge channel to maintain the liquidity of the liquid in the liquid discharge channel during the standby period and open the air discharge channel during the operational period to allow ejection of dry air simultaneously with liquid to a writing surface.

Liquid ejection system with air humidifying means operative during

Apparatus for applying droplets of colored liquid to a surface includes a chamber divided into a liquid chamber portion and an air chamber portion. The liquid chamber portion includes an intake channel connected to a liquid supply container and a discharge channel through which the liquid is discharged for deposition on the surface. A pressure producing means is in contact with the liquid chamber portion to produce periodic pressure increases in the liquid in the chamber portion to eject it through the discharge channel to the atmosphere in a series of droplets. The air chamber portion includes an intake channel connected to a source of pressurized air and a discharge channel axially aligned with the discharge channel of the liquid chamber portion to allow the air to be discharged therethrough to the atmosphere at a high speed. The liquid droplets are thus discharged through the two axially aligned discharged channels and accelerated by the stream of air along their passage to the surface.

Apparatus for applying liquid droplets to a surface by using a high

A writing unit for applying fluid droplets to a surface includes a chamber which is divided into an outer chamber portion and an inner chamber portion which are connected by a connecting channel. A discharge channel is connected to the outer chamber portion in alignment with the connecting channel. A piezoelectrical transducer is provided adjacent the inner chamber portion opposite to the outer chamber portion to produce short duration pressure increases to eject the liquid in the chamber from the discharge channel in pulsed jets to the surface. The inner and outer chamber portions are communicated to the atmosphere by respective vent passageways to withdraw the air in the chamber when the writing unit is first loaded with liquid and the bubbles introduced into the liquid in the chamber during normal operation. The vent passageways are closed during ink ejection process.

Ink ejection type writing unit

A writing mechanism for applying fluid droplets to a surface includes a chamber which is divided into an outer chamber portion and an inner chamber portion with a channel connecting the outer and inner chamber portions. The inner chamber portion is provided with a device which produces short duration pressure increases in the fluid in the chamber. The outer chamber portion is provided with an intermediate reservoir chamber which is in communication with an intake channel for the supply of liquid from a supply container and a discharge channel through which the liquid is discharged for deposition on the surface.

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Kanagawa, Japan

Kiyoshi Yamamori