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    Ink jet type recording head driving circuit
    3.
    发明公开
    Ink jet type recording head driving circuit 失效
    SteinerschaltungfürTintenstrahlaufzeichnungskopf。

    公开(公告)号：EP0548984A1

    公开(公告)日：1993-06-30

    申请号：EP92121978.8

    申请日：1992-12-24

    申请人： SEIKO EPSON CORPORATION

    发明人： Hosono, Satoru, c/o Seiko Epson Corporation ,  Abe, Tomoaki, c/o Seiko Epson Corporation ,  Yonekubo, Shuji, c/o Seiko Epson Corporation

    IPC分类号： B41J2/045

    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 (C1) which is connected through a first switching transistor (Q2) and a charging time constant adjusting resistor (R1) to a power source (VH), and grounded through a second switching transistor (Q4) and a discharging time constant adjusting resistor (R2), and a current buffer (Q6, Q7, Q8, Q9) through which the terminal voltage of the capacitor (C1) is applied to a pressure generating member scanning switch circuit (28). In the circuit, a first pulse for contracting a pressure generating member forming the recording head is applied to the first switching transistor (Q2), and a second pulse for expanding the pressure generating member is applied to the second switching transistor (Q4), so that the pressure generating member is contracted at a rate set by the capacitor (C1) and the charging time constant adjusting resistor (R1), to supply ink into the pressure chamber of the recording head, and then it is expanded at a rate set by the capacitor (C1) and the discharging time constant adjusting resistor (R2).

    摘要翻译： 一种喷墨式记录头驱动电路，包括：电容器（C1），其通过第一开关晶体管（Q2）和充电时间常数调节电阻器（R1）连接到电源（VH），并通过第二开关 晶体管（Q4）和放电时间常数调节电阻器（R2）以及电容器（C1）的端子电压施加到压力产生部件扫描开关电路（Q6，Q7，Q8，Q9）的电流缓冲器 28）。 在该电路中，用于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（Q2），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（Q4），因此 压力产生部件以由电容器（C1）和充电时间常数调节电阻器（R1）设定的速率收缩，以将墨水供应到记录头的压力室中，然后以由 电容器（C1）和放电时间常数调节电阻器（R2）。