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    12.
    发明专利
    未知

    公开(公告)号：DE3575437D1

    公开(公告)日：1990-02-22

    申请号：DE3575437

    申请日：1985-11-07

    Applicant: CANON KK

    Inventor： EIDA TSUYOSHI ,  SHIOYA MAKOTO ,  KOBAYASHI MASATSUNE

    IPC: C09B67/54

    Abstract: A method for purifying a dye solution is provided for a recording liquid. The method comprises steps of dissolving a dye in a solvent and treating the resulting dye solution with a flocculant to remove colloidal matters. Filtration or centrifuging may be employed in addition to the above-mentioned flocculation treatment. There is also provided a method for producing an ink by utilizing the above-mentioned method for purifying a dye solution.

    Recording liquid containing water soluble dyes
    13.
    发明专利
    Recording liquid containing water soluble dyes 未知

    公开(公告)号：GB2187469A

    公开(公告)日：1987-09-09

    申请号：GB8701481

    申请日：1987-01-23

    Applicant: CANON KK

    Inventor： SHIOYA MAKOTO

    IPC: C09D11/00 ,  C09D11/16 ,  C09D11/17 ,  C09D11/328 ,  C09D11/02

    Abstract: A recording liquid containing a plurality of water-soluble dyes is provided in which the water-soluble dyes give a tone satisfying the following formula (I) and has a chromatographic characteristic satisfying the following formula (II): 0 + ( DELTA b*) 0 wherein (I), DELTA a* and DELTA b* represent respectively a difference in a* and b* between any two dyes selected from said plurality of dyes in perception chromaticity indexes, and DELTA Rf represents a difference of flow rate Rf in paper chromatography between any two dyes selected from said plurality of dyes. A recording method using the recording liquid is also provided, which is useful for recording onto a recording medium containing a cellulose fiber exposed at the surface of the recording medium.

    15.
    发明专利
    未知

    公开(公告)号：DE60110287T2

    公开(公告)日：2006-02-16

    申请号：DE60110287

    申请日：2001-02-16

    Applicant: CANON KK

    Inventor： KATSURAGI RYUJI ,  SHIOYA MAKOTO

    IPC: B41J2/21 ,  B41M3/00 ,  B41M5/00 ,  C09D11/00

    Abstract: The invention provides liquid compositions, ink sets for ink-jet recording, ink-jet recording processes, recording units and ink-jet recording apparatus for providing high-quality images with lessened bleeding. The invention also provides liquid compositions, ink sets for ink-jet recording, ink-jet recording processes, recording units and ink-jet recording apparatus for providing images excellent in water fastness. A first liquid containing a polyvalent metal salt of aldonic acid and a second liquid containing a coloring material capable of reacting with the polyvalent metal salt are used in combination and applied on a recording medium so as to come into contact with each other, thereby conducting recording.

    16.
    发明专利
    未知

    公开(公告)号：DE69829122T2

    公开(公告)日：2005-12-29

    申请号：DE69829122

    申请日：1998-03-12

    Applicant: CANON KK

    Inventor： SHIOYA MAKOTO ,  TAKAHASHI KATSUHIKO ,  KURABAYASHI YUTAKA ,  OGASAWARA MASASHI ,  MISHINA SHINYA ,  SATO SHIN-ICHI

    IPC: B41J2/01 ,  B41J2/05 ,  B41J2/205 ,  B41J29/393 ,  B41J2/21

    Abstract: An ink jet recording method and apparatus for performing recording by discharging ink onto a recording medium in accordance with recording data using a recording head having ink discharge ports for discharging the ink. The apparatus includes a scanning unit for scanning the recording head relative to the recording medium for discharging ink to record pixels on the recording medium, and a determining unit for determining whether the recording data includes non-discharge data for a predetermined number of successive pixels to be recorded by the recording head, and for generating a corresponding determination output signal. The apparatus further includes a control unit for controlling ink discharge in accordance with the determination output signal such that an amount of ink discharged for forming at least one pixel subsequent to the predetermined number of successive pixels is reduced from a predetermined recording amount, when the recording data is determined to include non-discharge data for the predetermined number of successive pixels.

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