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    • 2. 发明授权
    • Method for preserving a liquid-ejection head, and liquid-ejection
apparatus
    • 用于保存液体喷射头的方法和液体喷射装置
    • US6095639A
    • 2000-08-01
    • US890333
    • 1997-07-09
    • Masaya UetsukiToshio KashinoHiroshi TajikaOsamu IwasakiHidehiko KandaYoshie Asakawa
    • Masaya UetsukiToshio KashinoHiroshi TajikaOsamu IwasakiHidehiko KandaYoshie Asakawa
    • B41J2/01B41J2/05B41J2/14B41J2/175B41J2/21
    • B41J2/14048B41J2/211B41J2202/21
    • A method for preserving a liquid-ejection head is disclosed. The method uses the liquid-ejection head having a first liquid-flowing passage that receives a supply of a first liquid and communicates with an ejection port; a second liquid-flowing passage that receives a supply of a second liquid that differs from the first liquid; a bubble generation area formed on the second liquid-flowing passage for heating the second liquid to generate a bubble in said second liquid; and a movable member positioned between the bubble generation area, having a free end on an ejection port's side of the first liquid-flowing passage and a supporting end on other side of the first liquid-flowing passage, where the free end of the movable member is displaced toward the first liquid-flowing passage by a pressure caused by a generation of the bubble when said second liquid is heated. The method includes a step of performing a replacement of one of the fist liquid and the second liquid with the other at least at a periphery of the ejection port or a periphery of the movable member. Thus the liquid-ejection head is able to perform an excellent recording whether it has not been used for a long time.
    • 公开了一种用于保持液体喷射头的方法。 该方法使用具有第一液体流动通道的液体喷射头,其接收第一液体的供应并与排出口连通; 第二液体流通通道,其接收与第一液体不同的第二液体的供给; 形成在第二液体流通通道上用于加热第二液体以在所述第二液体中产生气泡的气泡产生区域; 以及位于所述气泡生成区域之间的可动件,所述气泡产生区域具有在所述第一液体流通通道的喷射口侧的自由端和在所述第一液体流道的另一侧的支撑端,所述可移动部件的自由端 当所述第二液体被加热时,通过由气泡的产生引起的压力朝着第一液体流动通道移位。 该方法包括至少在喷射口的周边或可移动部件的周边处更换第一液体和第二液体中的一个的步骤。 因此,液体喷射头能够执行优异的记录,不管它是否长时间使用。
    • 3. 发明授权
    • Liquid jet head with a movable member, head cartridge using the liquid jet head, liquid jet apparatus and liquid discharging method
    • 具有可移动部件的液体喷射头,使用液体喷射头的头部盒,液体喷射装置和液体排出方法
    • US06318848B1
    • 2001-11-20
    • US08888048
    • 1997-07-03
    • Osamu IwasakiToshio KashinoHiroshi TajikaYasutoshi SaitoMasaya UetukiHidehiko KandaYoshie Asakawa
    • Osamu IwasakiToshio KashinoHiroshi TajikaYasutoshi SaitoMasaya UetukiHidehiko KandaYoshie Asakawa
    • B41J205
    • B41J2/14048B41J2/14056
    • A liquid jet head is provided with discharge ports for discharging liquid, liquid flow paths conductively connected with the discharge ports, air bubble generating areas for creating air bubbles in the liquid, and movable members arranged to face the air bubble generating areas, each having a free end in a position relatively near to the discharge port with respect to a fulcrum thereof. This movable member is inclined to position the free end of the movable member to release the air bubble generating area partly to the discharge port so as to enable the tangential line of the free end of the movable member on the side of the air bubble generating area or the extended line thereof to reach directly the discharge port formation area having the discharge port on the liquid flow path side before the creation of air bubble on the air bubble generating area, and with this position as reference, the movable member is displaced following the creation of air bubble on the air bubble generating area. With this arrangement, the liquid discharging efficiency and speed are significantly enhanced as compared with the conventional liquid jet head, and due to more stabilized discharge of droplets from the discharge ports, the quality of recorded images is improved.
    • 液体喷射头设置有用于排放液体的排出口,与排出口导电连接的液体流动通道,用于在液体中产生气泡的气泡生成区域和布置成面对气泡生成区域的可动构件,每个具有 自由端相对于其支点相对靠近排出口的位置。 该可动件倾斜以定位可移动部件的自由端,以将气泡生成区域部分地释放到排出口,以便可动件的自由端在气泡生成区域侧的切线 或其延伸线在气泡生成区域产生气泡之前直接到达具有在液体流路侧上的排出口的排出口形成区域,并且以该位置为基准,可移动部件沿着 在气泡发生区产生气泡。 通过这种布置,与传统的液体喷射头相比,液体排放效率和速度显着提高,并且由于来自排出口的液滴的更稳定的排放,提高了记录图像的质量。
    • 5. 发明授权
    • Method and apparatus for printing
    • 打印方法和装置
    • US6145962A
    • 2000-11-14
    • US311878
    • 1999-05-14
    • Daigoro KanematsuNaoji OtsukaKentaro YanoKiichiro TakahashiHitoshi NishikoriOsamu IwasakiHidehiko Kanda
    • Daigoro KanematsuNaoji OtsukaKentaro YanoKiichiro TakahashiHitoshi NishikoriOsamu IwasakiHidehiko Kanda
    • B41J2/01B41J2/05B41J2/14B41J2/145B41J2/205B41J2/21B41M5/00C09D11/00C09D11/30C09D11/40H04N1/40
    • H04N1/40087B41J2/2056B41J2/2107
    • In the case of printing in three-value level utilizing two kinds of inks mutually different densities for one color (higher and lower density inks), it is assumed that a reflection density of a region having a predetermined area when solid print is performed only by the lower density ink, and that when solid print is performed only by the higher density ink are expressed ODt and ODn, respectively. Since the granular appearance of the ink dots is expressed in terms of reflection density of one dot, the granular appearance of a lower density ink dot at a portion of image formed only by the lower density ink dots and the granular appearance of a higher density ink dot at a portion of image formed by the higher and lower density ink dots are expressed in terms of values of ODt and (ODn-ODt) divided by the number of pixels included in the above region, respectively. Accordingly, by making the reflection density ODt to be approximately one half of the reflection density ODn, the granular appearance produced by the lower density ink dot at the highlighted portion and the granular appearance produced by the higher density ink dot at the portion where the higher density ink dots scattered in the lower density ink dots can be made substantially equal to each other. For this purpose, it is preferable that a dye concentration of the lower density ink is to be about one fourth of that of the higher density ink.
    • 在使用两种不同浓度的油墨(高浓度和低浓度油墨)的三值油墨印刷的情况下,假设仅在实施印刷时由具有预定区域的区域的反射浓度 较低密度的墨水以及仅通过较高密度墨水进行固体印刷时分别表示为ODt和ODn。 由于墨点的粒状外观以一点的反射密度表示,所以在仅由较低密度墨点形成的图像部分处的较低密度墨点的粒状外观和较高密度墨水的粒状外观 通过高密度和低密度墨点形成的图像的一部分,以ODt和(ODn-ODt)的值分别除以上述区域中包括的像素数来表示。 因此,通过使反射密度ODt为反射密度ODn的大约一半,由突出部分的低密度墨点产生的粒状外观和高密度墨点在较高密度墨点处产生的粒状外观 可以将分散在较低密度墨点中的密度墨点基本上彼此相等。 为此,较低浓度油墨的染料浓度优选为较高浓度油墨的浓度的约四分之一。
    • 6. 发明授权
    • Method and apparatus for printing
    • 打印方法和装置
    • US5926191A
    • 1999-07-20
    • US961215
    • 1997-10-30
    • Daigoro KanematsuNaoji OtsukaKentaro YanoKiichiro TakahashiHitoshi NishikoriOsamu IwasakiHidehiko Kanda
    • Daigoro KanematsuNaoji OtsukaKentaro YanoKiichiro TakahashiHitoshi NishikoriOsamu IwasakiHidehiko Kanda
    • B41J2/01B41J2/05B41J2/14B41J2/145B41J2/205B41J2/21B41M5/00C09D11/00C09D11/30C09D11/40H04N1/40
    • H04N1/40087B41J2/2056B41J2/2107
    • In the case of printing in three-value level utilizing two kinds of inks mutually different densities for one color (higher and lower density inks), it is assumed that a reflection density of a region having a predetermined area when solid print is performed only by the lower density ink, and that when solid print is performed only by the higher density ink are expressed ODt and ODn, respectively. Since the granular appearance of the ink dots is expressed in terms of reflection density of one dot, the granular appearance of a lower density ink dot at a portion of image formed only by the lower density ink dots and the granular appearance of a higher density ink dot at a portion of image formed by the higher and lower density ink dots are expressed in terms of values of ODt and (ODn-ODt) divided by the number of pixels included the above region, respectively. Accordingly, by making the reflection density ODt to be approximately one half of the reflection density ODn, the granular appearance produced by the lower density ink dot at the highlighted portion and the granular appearance produced by the higher density ink dot at the portion where the higher density ink dots scattered in the lower density ink dots can be made substantially equal to each other. For this purpose, it is preferable that a dye concentration of the lower density ink is to be about one fourth of that of the higher density ink.
    • 在使用两种不同浓度的油墨(高浓度和低浓度油墨)的三值油墨印刷的情况下,假设仅在实施印刷时由具有预定区域的区域的反射浓度 较低密度的墨水以及仅通过较高密度墨水进行固体印刷时分别表示为ODt和ODn。 由于墨点的粒状外观以一点的反射密度表示,所以在仅由较低密度墨点形成的图像部分处的较低密度墨点的粒状外观和较高密度墨水的粒状外观 通过高密度和低密度墨点形成的图像的一部分,分别以除了上述区域的像素数除以ODt和(ODn-ODt)的值表示。 因此,通过使反射密度ODt为反射密度ODn的大约一半,由突出部分的低密度墨点产生的粒状外观和高密度墨点在较高密度墨点处产生的粒状外观 可以将分散在较低密度墨点中的密度墨点基本上彼此相等。 为此,较低浓度油墨的染料浓度优选为较高浓度油墨的浓度的约四分之一。