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    Ink jet type recording head driving circuit
    7.
    发明授权
    Ink jet type recording head driving circuit 失效
    喷墨式记录头驱动电路

    公开(公告)号：US5426454A

    公开(公告)日：1995-06-20

    申请号：US996620

    申请日：1992-12-24

    申请人： Satoru Hosono ,  Tomoaki Abe ,  Shuji Yonekubo ,  Minoru Usui ,  Masahiko Yoshida

    发明人： Satoru Hosono ,  Tomoaki Abe ,  Shuji Yonekubo ,  Minoru Usui ,  Masahiko Yoshida

    IPC分类号： B41J2/045 ,  B41J2/055

    CPC分类号： B41J2/04506 ,  B41J2/04541 ,  B41J2/04563 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/0459 ,  B41J2/04591 ,  B41J2002/14387

    摘要： 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.

    摘要翻译： 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。