Printhead driving method, printhead substrate, printhead, head cartridge, and printing apparatus
    11.
    发明授权
    Printhead driving method, printhead substrate, printhead, head cartridge, and printing apparatus 有权
    打印头驱动方法,打印头基板,打印头,头盒和打印装置

    公开(公告)号:US08002374B2

    公开(公告)日:2011-08-23

    申请号:US11865306

    申请日:2007-10-01

    IPC分类号: B41J29/38

    摘要: An increase in energy applied to a heating element can be prevented and the service life of a printhead can be prolonged even when the temperature of the printing element having a negative temperature coefficient rises and the resistance of the heating element decreases. A printhead having heating elements connected to a common power supply comprises a switching element series-connected to and controlling driving of the heating element at a voltage applied to a control terminal; a constant voltage source; a wiring resistance generated at a connection wiring line serial-connected to the heating element; and a voltage control circuit which controls to make the potential difference between both ends of the wiring resistance equal to the voltage of the constant voltage source when driving the heating element. A current flowing through the heating element is made constant without any influence of the temperature.

    摘要翻译: 即使当具有负温度系数的印刷元件的温度升高并且加热元件的电阻降低时,可以防止施加到加热元件的能量的增加并且打印头的使用寿命也能够延长。 具有连接到公共电源的加热元件的打印头包括以施加到控制端子的电压串联连接并控制加热元件的驱动的开关元件; 恒压源; 在与所述加热元件串联的连接布线处产生的布线电阻; 以及电压控制电路,其控制在驱动所述加热元件时使所述布线电阻的两端之间的电位差等于所述恒定电压源的电压。 流过加热元件的电流恒定,不受温度的影响。

    Printhead driving method, printhead substrate, printhead, head cartridge and printing apparatus
    12.
    发明授权
    Printhead driving method, printhead substrate, printhead, head cartridge and printing apparatus 失效
    打印头驱动方法,打印头基板,打印头,头盒和打印装置

    公开(公告)号:US07344218B2

    公开(公告)日:2008-03-18

    申请号:US10980192

    申请日:2004-11-04

    IPC分类号: B41J29/393

    摘要: An increase in energy applied to a heating element can be prevented and the service life of a printhead can be prolonged even when the temperature of the printing element having a negative temperature coefficient rises and the resistance of the heating element decreases upon controlling a switching element for controlling a current flowing through the heating element so as to make energy as constant as possible. A printhead having a plurality of heating elements connected to a common power supply comprises a switching element series-connected to the heating element and that controls driving of the heating element at a voltage applied to a control terminal; a constant voltage source using a common power supply as a reference; a wiring resistance generated at a connection wiring line serial-connected to the heating element; and a voltage control circuit which controls to make the potential difference between both ends of the wiring resistance equal to the voltage of the constant voltage source when driving the heating element. A current flowing through the heating element is made constant without any influence of the temperature of the heating element.

    摘要翻译: 即使当具有负温度系数的印刷元件的温度上升并且加热元件的电阻在控制开关元件时降低,也可以防止施加到加热元件的能量的增加并且打印头的使用寿命可以延长 控制流经加热元件的电流,使能量尽可能的恒定。 具有连接到公共电源的多个加热元件的打印头包括与加热元件串联连接的开关元件,并且以施加到控制端子的电压来控制加热元件的驱动; 使用公共电源作为参考的恒定电压源; 在与所述加热元件串联的连接布线处产生的布线电阻; 以及电压控制电路,其控制在驱动所述加热元件时使所述布线电阻的两端之间的电位差等于所述恒定电压源的电压。 流过加热元件的电流恒定,而不受加热元件的温度的任何影响。

    Printhead driving method, printhead substrate, printhead, head cartridge and printing apparatus
    17.
    发明申请
    Printhead driving method, printhead substrate, printhead, head cartridge and printing apparatus 失效
    打印头驱动方法,打印头基板,打印头,头盒和打印装置

    公开(公告)号:US20050140707A1

    公开(公告)日:2005-06-30

    申请号:US10980192

    申请日:2004-11-04

    IPC分类号: B41J2/05 B41J29/38

    摘要: An object of this invention is to prevent an increase in energy applied to a heating element and prolong the service life of a printhead even when the temperature of the printing element having a negative temperature coefficient rises and the resistance of the heating element decreases upon controlling a switching element for controlling a current flowing through the heating element so as to make energy as constant as possible. For this purpose, a printhead having a plurality of heating elements connected to a common power supply comprises: a switching element which is series-connected to the heating element and controls driving of the heating element at a voltage applied to a control terminal; a constant voltage source using a common power supply as a reference; a wiring resistance generated at a connection wiring line serial-connected to the heating element; and a voltage control circuit which controls to make the potential difference between both ends of the wiring resistance equal to the voltage of the constant voltage source when driving the heating element. Then, a current flowing through the heating element is made constant without any influence of the temperature of the heating element.

    摘要翻译: 本发明的目的是防止加热元件的能量增加,并延长打印头的使用寿命,即使当具有负温度系数的打印元件的温度升高并且加热元件的电阻在控制 开关元件,用于控制流过加热元件的电流,使能量尽可能的恒定。 为此,具有连接到公共电源的多个加热元件的打印头包括:开关元件,其串联连接到加热元件,并以施加到控制端子的电压来控制加热元件的驱动; 使用公共电源作为参考的恒定电压源; 在与所述加热元件串联的连接布线处产生的布线电阻; 以及电压控制电路,其控制在驱动所述加热元件时使所述布线电阻的两端之间的电位差等于所述恒定电压源的电压。 然后,流过加热元件的电流恒定,不受加热元件温度的任何影响。

    Base plate for use of recording head, recording head, recording apparatus, and method for manufacturing recording head
    20.
    发明授权
    Base plate for use of recording head, recording head, recording apparatus, and method for manufacturing recording head 失效
    用于记录头,记录头,记录装置和用于制造记录头的方法的基板

    公开(公告)号:US06997546B2

    公开(公告)日:2006-02-14

    申请号:US10293310

    申请日:2002-11-14

    IPC分类号: B41J2/05

    摘要: A base plate for use in a recording head, which is used by an ink jet head for printing by discharging ink onto a recording medium, the recording head being provided with energy converting element for discharging the ink by generating a bubble in the ink by converting electric energy to thermal energy, and an anti-cavitation film to protect the energy converting element from shocks generated at the time of bubble growth and extinction, the anti-cavitation film being used as electrodes for detecting the state of the ink by energizing the ink. The base plate comprises a first diode having the a cathode thereof connected to the anti-cavitation film and an anode thereof connected to a ground potential; and a second diode having the anode thereof connected to the anti-cavitation film and the cathode thereof connected to a power supply potential. With the structure thus arranged, it is made possible to reduce the possibility that the circuit element formed on a semiconductor substrate is destroyed by electrostatic discharge.

    摘要翻译: 一种用于记录头的基板,其由喷墨头用于通过将油墨喷射到记录介质上进行打印,所述记录头设置有能量转换元件,用于通过在油墨中产生气泡来排出油墨, 电能到热能,以及防空穴膜,以保护能量转换元件免受气泡生长和消光时产生的冲击,抗气蚀膜被用作通过激励墨水来检测墨水的状态的电极 。 基板包括其阴极连接到防空穴膜的第一二极管和连接到地电位的阳极; 以及第二二极管,其阳极连接到防空穴膜,其阴极连接到电源电位。 利用如此布置的结构,可以减少形成在半导体衬底上的电路元件被静电放电破坏的可能性。