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    • 5. 发明授权
    • Ink jet type recording head driving circuit
    • 喷墨式记录头驱动电路
    • US5426454A
    • 1995-06-20
    • US996620
    • 1992-12-24
    • Satoru HosonoTomoaki AbeShuji YonekuboMinoru UsuiMasahiko Yoshida
    • Satoru HosonoTomoaki AbeShuji YonekuboMinoru UsuiMasahiko Yoshida
    • B41J2/045B41J2/055
    • B41J2/04506B41J2/04541B41J2/04563B41J2/04581B41J2/04588B41J2/0459B41J2/04591B41J2002/14387
    • An ink jet type recording head driving circuit comprises: a capacitor which is connected through a first switching transistor and a charging time constant adjusting resistor to a power source, and grounded through a second switching transistor and a discharging time constant adjusting resistor; and a current buffer through which the terminal voltage of the capacitor is applied to a pressure generating member scanning switch circuit. In the circuit, a first pulse for contracting a pressure generating member forming the recording head is applied to the first switching transistor, and a second pulse for expanding the pressure generating member is applied to the second switching transistor, so that the pressure generating member is contracted at a rate set by the capacitor and the charging time constant adjusting resistor, to supply ink into the pressure chamber of the recording head, and then it is expanded at a rate set by the capacitor and the discharging time constant adjusting resistor.
    • 一种喷墨式记录头驱动电路,包括:电容器,其通过第一开关晶体管和充电时间常数调节电阻器连接到电源,并通过第二开关晶体管和放电时间常数调节电阻器接地; 以及电流缓冲器,电容器的端子电压通过该缓冲器施加到压力产生部件扫描开关电路。 在该电路中,将形成记录头的压力产生部件收缩的第一脉冲施加到第一开关晶体管,并且用于使压力产生部件膨胀的第二脉冲施加到第二开关晶体管,使得压力产生部件为 以电容器和充电时间常数调节电阻器设定的速率收缩,将墨水供应到记录头的压力室中,然后以由电容器和放电时间常数调节电阻器设定的速率扩展。
    • 7. 发明授权
    • Drop-on-demand ink-jet printing head
    • 按需喷墨打印头
    • US06742875B2
    • 2004-06-01
    • US09758163
    • 2001-01-12
    • Minoru UsuiHaruhiko KotoHaruo NakamuraYozo ShimadaTomoaki Abe
    • Minoru UsuiHaruhiko KotoHaruo NakamuraYozo ShimadaTomoaki Abe
    • B41J245
    • B41J2/14274
    • A drop-on-demand ink-jet printing head provided with an array of a plurality of piezoelectric elements arranged at regular intervals and fixed at their one ends to a base, the other ends of the respective piezoelectric elements being free ends which are disposed in opposition to nozzle respective apertures, the piezoelectric elements being formed by cutting, at predetermined width, a piezoelectric plate obtained by firing a lamination of paste-like piezoelectric material conductive material stacked alternately in layers. Since each piezoelectric element is composed of a thin piezoelectric plate interposed between electrodes, if a voltage of only about 30 V, which is sufficient to drive the thin piezoelectric plate, is applied across the electrodes, it is possible to largely flex the whole of the piezoelectric element. By this transformation, ink between the top end of the piezoelectric element and the nozzle aperture is discharged to the outside as an ink drop. Because the driving voltage required for forming an ink drop is as low as possible, it is possible to simplify a driving circuit, and because of cutting a piezoelectric plate, it is possible to form small-sized piezoelectric elements with the same accuracy as in a process of producing a semiconductor.
    • 一种按需喷墨打印头,其设置有以规则间隔布置的多个压电元件的阵列,并且其一端固定在基座上,各个压电元件的另一端为自由端,其位于 与喷嘴相应的孔相对,压电元件通过以预定的宽度切割通过烧结层叠交替层叠的糊状压电材料导电材料而获得的压电板而形成。 由于每个压电元件由介于电极之间的薄压电板构成,所以如果仅在电极之间施加足以驱动薄压电板的约30V的电压,则可以将整个 压电元件 通过这种变换,压电元件的顶端和喷嘴孔之间的墨水作为墨滴被排放到外部。 由于形成墨滴所需的驱动电压尽可能地低,所以可以简化驱动电路,并且由于切割压电板,所以可以形成小型压电元件,其精度与 制造半导体的工艺。
    • 10. 发明授权
    • Drop-on-demand ink-jet printing head
    • 按需喷墨打印头
    • US5600357A
    • 1997-02-04
    • US433756
    • 1995-05-04
    • Minoru UsuiHaruhiko KotoHaruo NakamuraYozo ShimadaTomoaki Abe
    • Minoru UsuiHaruhiko KotoHaruo NakamuraYozo ShimadaTomoaki Abe
    • B41J2/045B41J2/055B41J2/14B41J2/16G01D15/18
    • B41J2/1623B41J2/14274B41J2/14282B41J2/161B41J2/1612B41J2/1614B41J2/1626B41J2/1632B41J2002/14387
    • A drop-on-demand ink-jet printing head provided with an array of a plurality of piezoelectric elements arranged at regular intervals and fixed at their one ends to a base, the other ends of the respective piezoelectric elements being free ends which are disposed in opposition to nozzle respective apertures, the piezoelectric elements being formed by cutting, at predetermined width, a piezoelectric plate obtained by firing a lamination of paste-like piezoelectric material and conductive material stacked alternately in layers. Since each piezoelectric element is composed of a thin piezoelectric plate interposed between electrodes, if a voltage of only about 30 V, which is sufficient to drive the thin piezoelectric plate, is applied across the electrodes, it is possible to largely flex the whole of the piezoelectric element. By this transformation, ink between the top end of the piezoelectric element and the nozzle aperture is discharged to the outside as an ink drop. Because the driving voltage required for forming an ink drop is as low as possible, it is possible to simplify a driving circuit, and because of cutting a piezoelectric plate, it is possible to form small-sized piezoelectric elements with the same accuracy as in a process of producing a semiconductor.
    • 一种按需喷墨打印头,其设置有以规则间隔布置的多个压电元件的阵列,并且其一端固定在基座上,各个压电元件的另一端为自由端,其位于 与喷嘴相应的孔相对,压电元件通过以预定的宽度切割通过焙烧层状的糊状压电材料和交替层叠的导电材料而获得的压电板而形成。 由于每个压电元件由介于电极之间的薄压电板构成,所以如果仅在电极之间施加足以驱动薄压电板的约30V的电压,则可以将整个 压电元件 通过这种变换,压电元件的顶端和喷嘴孔之间的墨水作为墨滴被排放到外部。 由于形成墨滴所需的驱动电压尽可能地低,所以可以简化驱动电路,并且由于切割压电板,所以可以形成小型压电元件,其精度与 制造半导体的工艺。