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    21.
    发明专利
    未知

    公开(公告)号：DE69733172D1

    公开(公告)日：2005-06-09

    申请号：DE69733172

    申请日：1997-07-07

    Applicant: CANON KK

    Inventor： ASAKAWA YOSHIE ,  SUGAMA SADAYUKI ,  ASAI AKIRA ,  ISHINAGA HIROYUKI ,  KASHINO TOSHIO ,  YOSHIHIRA AYA ,  KUDO KIYOMITSU ,  SUGIYAMA HIROYUKI

    IPC: B41J2/175 ,  B41J2/05 ,  B41J2/14

    Abstract: A liquid discharging method of regulating and directing an air bubble to a discharge port by a substrate having a heat generating surface for generating heat for creating an air bubble in a liquid disposed in face-to-face relationship with a liquid discharge port, a movable member provided so as to intervene between the heat generating surface and the discharge port, and having a free end displaceable by the air bubble, the free end or a changing portion being located in an area opposed to the minimum area region of the discharge port or upstream of the opposed area, and an opposed surface opposed to a surface which provides the heat generating surface side of the movable member when the free end of the movable member is displaced by the air bubble, and fixed to cooperate with the movable member during the displacement of the movable member to direct the air bubble toward the discharge port.

    23.
    发明专利
    未知

    公开(公告)号：DE69530826T2

    公开(公告)日：2004-03-11

    申请号：DE69530826

    申请日：1995-11-30

    Applicant: CANON KK

    Inventor： OKUDA MASAHIRO ,  ASAI AKIRA ,  MASUTANI SHIGEKI

    IPC: H01J29/04 ,  H01J1/316 ,  H01J9/02 ,  H01J31/12 ,  H01J3/02

    Abstract: An electron-emitting device having an electron-emitting portion (6,3) between a lower potential side electrode (4) and a higher potential side electrode (5) which are opposite to each other, the electron-emitting device including a field correction electrode (7) disposed adjacent to the lower potential side electrode or the higher potential side electrode and capable of independently supplying a potential.

    24.
    发明专利
    未知

    公开(公告)号：DE69723153T2

    公开(公告)日：2004-01-29

    申请号：DE69723153

    申请日：1997-04-29

    Applicant: CANON KK

    Inventor： MITOME MASANORI ,  OKUDA MASAHIRO ,  AIBA TOSHIAKI ,  MATSUTANI SHIGEKI ,  TAKADA KAZUHIRO ,  ASAI AKIRA

    IPC: H01J1/316 ,  H01J9/02 ,  H01J1/30

    Abstract: An electron-emitting apparatus is constituted by an electron-emitting device having an electroconductive film including electron-emitting portions, and an electrode for attracting electrons. An electrically insulated elongated region is formed in the electroconductive film to divide the film into a higher potential side and a lower potential side. The insulated region has a substantially periodical shape formed of portions projecting to the higher potential side and portions projecting to the lower potential side. Continuous electron-emitting portions are present at at least part of the portion projecting to the higher potential side in one period of the insulated region.

    LIQUID EJECTION HEAD
    28.
    发明专利
    LIQUID EJECTION HEAD 未知

    公开(公告)号：CA2436011C

    公开(公告)日：2009-03-10

    申请号：CA2436011

    申请日：2002-11-22

    Applicant: CANON KK

    Inventor： SUGAMA SADAYUKI ,  TAMURA YASUYUKI ,  MURAI KEIICHI ,  KAWAI TSUTOMU ,  ASAI AKIRA ,  SASAKI TOSHIAKI ,  TACHIHARA MASAYOSHI

    IPC: B05B1/24 ,  A61M11/00 ,  A61M15/00 ,  A61M15/02 ,  B41J2/05 ,  B41J2/135 ,  B41J2/14

    Abstract: A liquid ejection head includes a liquid path; an ejection outlet forming member which constitutes a part of a wall of the liquid and which forms an ejection outlet for ejecting a droplet of liquid; a heat generating element, provided at a position opposing to the ejection outlet of the wall of the liquid flow path, for generating a bubble in the liquid by application of heat to the liquid; a restrictor portion, provided at a recessed portion of the ejection outlet, wherein the recessed portion is recessed from a plane in which the ejection outlet is formed, wherein the liquid forms a meniscus and is retained in the ejection outlet such that the restrictor portion is within the liquid, wherein an area So of an opening of the restrictor portion and a surface Sh of the heat generating element satisfy So ~ Sh. According to this invention, a central portion of the meniscus opposed to the fine opening at the ejection outlet bulges, and the liquid is ejected in this state. Namely, very small amount of the liquid can be ejected, since not all of the liquid in the recess portion in the ejection outlet is ejected.

    29.
    发明专利
    未知

    公开(公告)号：DE60019482D1

    公开(公告)日：2005-05-25

    申请号：DE60019482

    申请日：2000-02-29

    Applicant: CANON KK

    Inventor： YAGI TAKAYUKI ,  TAMURA YASUYUKI ,  ASAI AKIRA ,  FURUKAWA TATSUO ,  SHINJO KATSUHIKO ,  WATANABE HIDENORI ,  TSUKADA MAMORU C O CANON KABUS ,  OKAMURA YOSHIMASA

    IPC: B41J2/05

    Abstract: In a driving method of an ink-jet recording head, heat is generated by applying a drive signal to a heating element, and this heat is given to ink to generate a bubble and discharge ink through a discharge outlet. The drive signal comprises a first drive signal (t0-t1) for storing foaming energy in ink, and a second drive signal (t1-t2) for generating a bubble in ink. The second drive signal has a signal time shorter than the boundary foaming time (ts) at which foaming energy decreases in case of performing foaming only by the second drive signal. The first drive signal is applied prior to said second drive signal in order to compensate a decrease in foaming energy. The ink is heated over the boiling temperature Tb.

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