Konica-Minolta Holdings, Inc.

Konica Minolta, Inc.

National Institute of Advanced Industrial Science and Technology

Sharp Kabushiki Kaisha Corporation

Sharp Kabushiki Kaishi

Yasuo Nishi

Kazuhiro Murata

Hiroshi Yokoyama

Kaoru Higuchi

Atsuro Yanata

Naomi Kubo

Nobuhiro Ueno

Shigekazu Sakai

Koujiro Yoshida

Isao Doi

Kusunoki Higashino

Yuichi Machida

Nobuhisa Ishida

Shigeru Nishio

Masanori Shimazoe

Yoshifumi Takafuji

Toshio Tahira

Hironobu Iwashita

Kazunori Yamamoto

Kazuhiro Nat Inst Of Adv Ind S & T Murata

Hiroshi Nat Inst Of Adv Ind S & T Yokoyama

Kaoru Sharp Kabushiki Kaisha Higuchi

Kazuhiro Tsukuba Central 2 Murata

Hiroshi Tsukuba Central 2 Yokoyama

Kazuhiro; c/o National Institute Murata

Kaoru c/o Sharp Kabushiki Kaisha Higuchi

Hiroshi; c/o National Institute Yokoyama

An inkjet head includes a head chip and an ink chamber. The head chip has a nozzle substrate provided with nozzles which discharge ink. The ink chamber is located over the head chip. In the ink chamber, the ink to be supplied to the nozzles is stored. The inkjet head is mounted on a mounting member. Between the nozzle substrate and the ink chamber, the inkjet head has a position reference substrate provided with butting parts. The butting parts are butted against the mounting member to position the inkjet head when the inkjet head is mounted on the mounting member.

Inkjet head, inkjet head module, and inkjet printer

An inkjet head comprising ink flow paths each including a nozzle in communication with a pressure chamber. Pressurizing sections vary pressure on the ink in the respective pressure chambers. Each of the ink flow paths has a natural frequency of a first-order mode and the ink and has a natural frequency of a second-order mode which is higher than the natural frequency of the first-order mode. Each of the pressurizing sections varies the pressure on the ink for a predetermined time corresponding to the natural frequency of the first-order mode, so that a predetermined volume of ink is discharged when a shift of a fluid level of the ink due to pressure oscillation of the second-order mode is superposed on a shift of a fluid level of the ink due to pressure oscillation of the first-order mode.

Inkjet head and inkjet recording device

A method for producing an inkjet head may include, the inkjet head having:

Method for producing inkjet head, inkjet head, method for producing inter-member electrification structure, and inter-member electrification structure

The object is to provide an inkjet head unit having: head chips having nozzles arranged on nozzle faces, and capable of discharging ink by respective independent pressure generating module from pressure chambers communicating with the nozzles; and a tabular head unit base on which the head chips are arranged and which is capable of holding the head chips, of abutting faces of the head unit base and the head chip, at least one of the abutting face on the head unit base side and the abutting face on the head chip side is formed in a stepped shape, so that the height of the abutting face of the head chip relative to the surface of the head unit base is partially changed, and the head chip is thereby attached to be inclined relative to the surface of the head unit base.

Inkjet head unit and inkjet recording device

Provided is an inkjet recording apparatus capable of recording a high quality image without limiting the kinds of ink or recording media, including an inkjet head having a plurality of nozzles to eject ink droplets, wherein the ink droplets ejected from the plurality of the nozzles is charged by applying voltage between the inkjet head and the recording medium, and land on the recoding medium so as to record the image on the recording medium, wherein after a first ink droplet lands on the recording medium, a second ink droplet lands on the recording medium so as to overlap with the first ink droplet before discharging of the first ink droplet is completed.

Inkjet recording apparatus

A method is for producing an active matrix organic EL display element by an inkjet method to eject droplets () of a liquid via an ejection hole of a nozzle so as to form an organic EL layer. The liquid contains an organic EL layer material. An electrostatic attraction type inkjet apparatus () is used whose ejection hole () has a diameter smaller than a diameter of the droplets (). The droplets are ejected from the nozzle of the electrostatic attraction type inkjet apparatus () in such a manner that each of the droplets is 1 pl or less in amount. With this arrangement, the landed droplet dries quickly, and movement of the landed droplet is restricted. This makes it possible to form an organic EL layer accurately with low cost.

Method and apparatus for manufacturing active-matrix organic el display, active matrix organic el display, method for manufacturing liquid crystal array, liquid crystal array, method and apparatus for manufacturing color filter substrate, and color filter substrate

Size reduction and high integration of each of the laminated substrates are achieved, while forming an excellent wiring which electrically connects the substrates to each other. A conductive ink, i.e., an ink, containing a conductive material is used, and in a state where a voltage is applied between a print head and a substrate unit, an ink droplet of the conductive ink is discharged from the print head, while relatively shifting the substrate unit and the print head substantially parallel to at least the upper surface of the substrate. Thus, a conductive layer which electrically connects electrodes to each other between the substrates is formed.

Wiring forming method

A liquid ejection head, having: an insulating nozzle plate provided with a nozzle having, a liquid supply port to supply liquid and an ejection port to eject the liquid supplied from the liquid supply port onto a substrate; a cavity communicating with the liquid supply port to reserve the liquid to be ejected from the ejection port; an electrostatic voltage applying device to generate an electrostatic attraction force by applying an electrostatic voltage between the liquid in the nozzle and the cavity, and the substrate; and a control device to control the electrostatic voltage applying device for conducting polarization relaxation operation by applying an electrostatic voltage having reverse polarity opposite to that of the electrostatic voltage applied in liquid ejection, wherein the nozzle is a flat nozzle and the control device.

Liquid ejection head, liquid ejection apparatus and liquid ejection method

A liquid ejection head including: an insulating nozzle plateprovided with a nozzle having, a liquid supply port to supply liquid and a ejection port to eject the liquid supplied from the liquid supply port onto a substrate; a cavity in communication with the liquid supply port to reserve the liquid to be ejected from the ejection port; an electrostatic voltage application device to generate an electrostatic attraction force by applying the electrostatic voltage between the liquid in the nozzle and in the cavity, and substrate; and a control device to control application of the electrostatic voltage through the electrostatic voltage application device; wherein the nozzle is a flat nozzle not protruding from the nozzle plate and the control device control the electrostatic voltage application device so as to eject the liquid from the nozzle by applying a bipolar pulse which alternates between negative and positive polarity.

Liquid ejection head and liquid ejection method

A liquid ejection head which can fly a minute high viscosity droplet with high precision by a low drive voltage in electric field assist system which exhibiting excellent maintainability such as cleaning. The liquid ejection head () comprises a nozzle plate () provided with a nozzle () having a liquid supply opening () for supplying a liquid (L), an ejection opening () for ejecting the liquid (L), and a liquid supply passage for supplying the liquid (L) from liquid supply opening () to the liquid ejection opening (), a cavity () for storing the liquid (L), a pressure generating means for generating pressure in the cavity (), and an electrostatic voltage generating means for generating an electrostatic attraction between the liquid (L) and a substrate. The liquid supply opening side of the nozzle () is formed of a silicon layer (), the ejection opening side of the nozzle is formed of at least one resin layer () composed of thermosetting or photosensitive fluorine polymer having a volume resistivity of 10&#x3a9; or above and a dielectric constant of 3 or less, and the diameter of the nozzle () on the liquid supply opening side is larger than that of the nozzle on the liquid ejection side.

Liquid ejection head and liquid ejection device

A liquid ejection apparatus includes: a liquid ejection head () having a nozzle () with an inner diameter of 15 &#x3bc;m or less to eject droplets of charged solution onto a substrate; an ejection voltage supply () to apply an ejection voltage to a solution inside the nozzle; a convex meniscus generator () to form a state in which the solution inside the nozzle rises from the nozzle in a convex shape; and an operation controller () to control application of a drive voltage to drive the convex meniscus generator and application of an ejection voltage by the ejection voltage supply so that the drive voltage to the convex meniscus generator is applied in timing overlapped with the application of a pulse voltage as the ejection voltage by the ejection voltage supply.

Liquid ejection apparatus

A liquid ejection head having: a nozzle for ejecting a liquid; a flat nozzle plate on which the nozzle is provided; a cavity to store the liquid to be ejected from an ejection hole of the nozzle; a pressure generating section which generates pressure on the liquid in the nozzle and forms a meniscus of the liquid in the ejection hole of the nozzle; an electrostatic voltage applying section which applies electrostatic voltage between a base material and the liquid in the nozzle and the cavity, and generates electrostatic suction force; and an operation control section which controls applying of the electrostatic voltage by the electrostatic voltage applying section, and controls applying of drive voltage to drive the pressure generating portion, wherein a volume resistivity of the nozzle plate is 10&#x3a9;m or more.

Liquid ejection head, liquid ejection device and liquid ejection method

Liquid ejecting apparatusfor ejecting electrically charged droplets of the liquid solution onto base member K, which includes liquid ejecting headto eject the droplets from top endof nozzle, with the inner diameter equal to or less than 100 &#x3bc;m, liquid solution supplying sectionto supply the liquid solution into nozzle, and ejection voltage applying sectionto apply the ejection voltage onto the liquid solution in nozzle. In liquid ejecting apparatus, nozzleprojects toward the droplet ejecting direction from nozzle planeon nozzle platefacing base member K, whereby the projecting length of nozzleis equal to or less than 30 &#x3bc;m.

Liquid solution ejecting apparatus

An electrostatic attraction fluid jet device of the present invention is so arranged that a nozzle () is formed so as to correspond to a meniscus equivalent to a tip portion in the form of a taylor cone formed in a process of an electrostatic attraction of ink () as a conventional fluid. A diameter of an ink-ejecting hole () of the nozzle () is set to be substantially the same as a diameter of the tip portion, which is about to be ejected, of the meniscus () of ink. Moreover, the diameter of the ink-ejecting hole () of the nozzle () is set to be equal to or less than a droplet diameter of the ink () which has just been ejected. Therefore, it is possible to provide an electrostatic attraction fluid jet device which can realize a recording device which has high resolution, is safe and is highly versatile.

Electrostatic attraction fluid jet device

First, through a coating step, a photolithography step and an etching step, a plurality of electrodes, . . . are formed on a base plate. Next, a resist layeris formed on the base plateso as to cover all of the electrodes, . . . , and by exposing and developing the resist layer, a nozzlehaving a super minute diameter is formed to stand with respect to the base plateso as to make the resist layercorrespond to each electrode, and an in-nozzle passage is formed in each nozzle

Producing method of electrostatic sucking type liquid jetting head, producing method of nozzle plate, driving method of electrostatic sucking type liquid jetting head, electrostatic sucking type liquid jetting apparatus and liquid jetting apparatus

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Hachioji, Japan

Yasuo Nishi