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    • 54. 发明授权
    • Sheet transport device capable of preventing multiple feeding
    • 可预防多种进料的板材运输装置
    • US5232211A
    • 1993-08-03
    • US896246
    • 1992-06-10
    • Hiroshi KubotaKenji Oda
    • Hiroshi KubotaKenji Oda
    • B65H3/06B65H3/44B65H3/52B65H5/06G03G15/00
    • B65H3/5261B65H3/44
    • A sheet transport device includes a first cassette which holds first conventional thin, wide sheets; a first sheet separator positioned along a first transport path in order to separate the first sheets from one another, and including a first forward roller rotated in the sheet transport direction, a first parallel retard roller rotatable in an opposite direction, and a drive mechanism which transmits the driving force to the first retard roller only when the first forward roller and the first retard roller are out of contact with each other, such that otherwise, the first retard roller moves together with the first forward roller when they are in contact with each other, the first forward roller and first retard roller being held out of contact with each other when a first sheet is placed therebetween; a second cassette which holds the first sheets or second thicker, narrow sheets which does not permit the first forward roller and the first retard roller to contact each other when placed therebetween; and a second sheet separator positioned along a second transport path in order to separate the second sheets from one another, the second sheet separator including a second forward roller which is rotated in the sheet transport direction and a second retard roller which is rotatable in the opposite direction and which is spaced apart from the second forward roller by a distance at least equal to the first thickness during activation of the second sheet separator.
    • 55. 发明授权
    • Head for ink-jet printer
    • 头喷墨打印机
    • US5144342A
    • 1992-09-01
    • US798341
    • 1991-11-20
    • Hiroshi Kubota
    • Hiroshi Kubota
    • B41J2/045B41J2/055B41J2/14
    • B41J2/14274B41J2002/14379
    • A head for an ink-jet printer includes an elastic plate, a wall member defining an ink chamber together with the elastic plate, a nozzle provided in the wall member and communicated with the chamber, and a piezoelectric element. The piezoelectric element is shaped in a plate, has a side face, which defines a thickness of the piezoelectric element, and is disposed such that the side face faces the elastic plate. The piezoelectric element presses the elastic plate at the side face by an expansion due to a piezoelectric effect in a direction toward the side face. The head further includes electrodes attached to the piezoelectric element for applying an electric voltage across the piezoelectric element so as to cause the piezoelectric effect.
    • 用于喷墨打印机的头包括弹性板,与弹性板一起限定油墨室的壁构件,设置在壁构件中并与室连通的喷嘴和压电元件。 压电元件成形为板状,具有限定压电元件的厚度的侧面,并且被设置为使得侧面面向弹性板。 压电元件由于在朝向侧面的方向上的压电效应的膨胀而在侧面按压弹性板。 头部还包括附接到压电元件的电极,用于在压电元件两端施加电压,以产生压电效应。