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    1.
    发明专利
    未知

    公开(公告)号：DE60107994D1

    公开(公告)日：2005-02-03

    申请号：DE60107994

    申请日：2001-04-18

    Applicant: CANON KK

    Inventor： OKAMOTO HIDEAKI ,  ARA YOHJI ,  INOUE HIROYUKI ,  FUKAZAWA HIDEO ,  KURATA TETSUJI ,  HIRANO HIROFUMI ,  NETSU HIROSHI ,  UETSUKI MASAYA ,  HAYASHI HIROKI ,  ASAKI NORIYASU

    IPC: B41J2/175

    Abstract: A joint device (21) includes a supply pipe (21c) having an ink supply port (21b), a closing device (101) for opening and closing the ink supply port (21b), a deformation device (160) for deforming the closing device and an urging device (161) for urging the deformation device (160). An ink jet recording apparatus includes the above joint device (21), a supply pipe (21c), a closing device (101), a deformation device (160), and an urging device (161). An ink supplying device includes a negative-pressure introducing device (31) introducing negative pressure into the ink tank (20) an ink supplying device (21) supplying the ink to the ink tank (20), a gas-liquid separating device (48) provided between the ink tank (20) and the negative-pressure introducing device (31), for transmitting gases therethrough while not transmitting the ink therethrough, and an isolation device separating the negative-pressure introducing path (31a). An ink supplying method includes negative-pressure introducing step, gas-liquid separating step introducing a negative pressure into an ink tank, and isolation step isolating the negative-pressure introducing path (31a).

    2.
    发明专利
    未知

    公开(公告)号：AT409588T

    公开(公告)日：2008-10-15

    申请号：AT01121091

    申请日：2001-09-03

    Applicant: CANON KK

    Inventor： ASAKI NORIYASU ,  KIGAMI HIROYUKI ,  OZAKI TERUO ,  HIROKI TAJIMA

    IPC: B41J2/175 ,  B41J2/14 ,  B41J2/165 ,  B41J2/21

    Abstract: A method of preserving a recording head which includes an ink flow path by which the ink is supplied and a discharge port in communication with the ink flow path to discharge the ink supplied into the ink flow path; is connected to an ink tank in the recording apparatus in such a way to be removably attached to or detached from the ink tank, to allow the ink to be discharged from the discharge port; and uses a reactive ink as the recording ink containing a colorant and reactive component reactive with another ink, comprises a step of examining discharging conditions of the recording head using an ink for examination of a composition free of the reactive component, which is supplied into the ink flow path, and a step of step of preserving the recording head for preservation by replacing the ink for examination remaining in the ink flow path in the recording head by an ink for preservation containing neither the colorant nor reactive component, after the step of examining discharging conditions is over.

    9.
    发明专利
    未知

    公开(公告)号：AT316553T

    公开(公告)日：2006-02-15

    申请号：AT01121094

    申请日：2001-09-03

    Applicant: CANON KK

    Inventor： TAKUHARA HIROYUKI ,  TAKIZAWA YOSHIHISA ,  MAFUNE KUMIKO ,  TERAOKA HISASHI ,  TAKADA YOICHI ,  ASAKI NORIYASU ,  TAKADA YUKO ,  KANKE TSUYOSHI

    IPC: C09D11/02 ,  C09D11/00

    Abstract: An ink set which comprises a black ink containing an aqueous medium and a pigment dispersed in the aqueous medium by an action of an ionic group, and at least two color inks each containing a coloring material and an aqueous medium, wherein (i) respective images formed with the respective color inks have the same DELTA E or have the difference in DELTA E that is 10 or less in a CIELAB color space display system in a fading test under conditions that cause fading corresponding to pseudo-indoor sunlight fading through a window for 3 years or more, and (ii) at least one of the color inks contains at least one of a coloring material and an additive that destabilize dispersion stability of the pigment in the black ink. The ink set can provide a high quality multicolor image keeping color balance after long preservation and showing less bleeding between black and color regions.

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