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    • 34. 发明申请
    • Printhead driving method, printhead substrate, printhead, head cartridge and printing apparatus
    • 打印头驱动方法,打印头基板,打印头,头盒和打印装置
    • US20050140707A1
    • 2005-06-30
    • US10980192
    • 2004-11-04
    • Yoshiyuki ImanakaNobuyuki HirayamaIchiro SaitoMuga MochizukiTakaaki YamaguchiMasao KatoToshiyasu Sakai
    • Yoshiyuki ImanakaNobuyuki HirayamaIchiro SaitoMuga MochizukiTakaaki YamaguchiMasao KatoToshiyasu Sakai
    • B41J2/05B41J29/38
    • B41J2/04538B41J2/04541B41J2/04555B41J2/04565B41J2/0457B41J2/0458
    • 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.
    • 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。
    • 35. 发明授权
    • Current mirror circuit with base current compensation
    • 电流镜电路具有基极电流补偿
    • US06407620B1
    • 2002-06-18
    • US09234302
    • 1999-01-21
    • Nobuyuki Hirayama
    • Nobuyuki Hirayama
    • G05F110
    • G05F3/265
    • In a current mirror circuit having different output ratios or outputting a plurality of output currents, the present invention provides a current mirror circuit which suppresses the influence of an early effect of a transistor serving as a reference and achieves an effect of base current compensation. In the current mirror circuit utilizing a common base transistor for an output stage, the base current of the common base transistor for the output stage is subtracted from the sum of the base current of a first transistor inputting a reference current and the base current of a second transistor where the base of the first transistor and the base of the second transistor are commonly connected. The resultant current is added to a current output terminal at the same current ratio as an input/output current ratio of the current mirror circuit and output.
    • 在具有不同输出比或输出多个输出电流的电流镜电路中,本发明提供一种电流镜电路,其抑制作为基准的晶体管的早期效应的影响,并实现基极电流补偿的效果。 在利用用于输出级的公共基极晶体管的电流镜像电路中,从输入基准电流的第一晶体管的基极电流和基准电流的基准电流之和减去用于输出级的公共基极晶体管的基极电流 第二晶体管,其中第一晶体管的基极和第二晶体管的基极共同连接。 所得到的电流以与电流镜电路的输入/输出电流比相同的电流比加到电流输出端,并输出。
    • 38. 发明授权
    • Printhead substrate, printhead and printing apparatus
    • 打印头基板,打印头和打印设备
    • US08632150B2
    • 2014-01-21
    • US12942377
    • 2010-11-09
    • Ryo KasaiNobuyuki HirayamaTomoko KudoTatsuo Furukawa
    • Ryo KasaiNobuyuki HirayamaTomoko KudoTatsuo Furukawa
    • B41J2/11
    • B41J2/0458B41J2/0452B41J2/04541B41J2/04543B41J2/04548
    • A printhead substrate comprises: a plurality of printing elements arrayed in a predetermined direction; first logic circuits arranged in correspondence with respective groups each assigned to a predetermined number of adjacent printing elements, and configured to select a printing element to be driven from the printing elements belonging to each of the groups; driving circuits configured to drive the printing elements based on signals output from the first logic circuits; second logic circuits configured to supply externally input printing data to the first logic circuits corresponding to the respective groups; and electricity storage units arranged in the respective groups, connected to a power supply line for supplying power to at least one of the first logic circuits, the second logic circuits, and the driving circuits, and configured to store charges in accordance with a voltage applied through the power supply line.
    • 打印头基板包括:沿预定方向排列的多个打印元件; 第一逻辑电路被布置成与分配给预定数量的相邻打印元件的各个组相对应,并且被配置为从属于每个组的打印元素中选择要驱动的打印元件; 驱动电路,被配置为基于从所述第一逻辑电路输出的信号来驱动所述打印元件; 第二逻辑电路,被配置为将外部输入的打印数据提供给对应于各个组的第一逻辑电路; 以及设置在各组中的电力存储单元,连接到用于向第一逻辑电路,第二逻辑电路和驱动电路中的至少一个供电的电源线,并且被配置为根据施加的电压来存储电荷 通过电源线。
    • 40. 发明申请
    • DEVICE AND APPARATUS FOR CONTROLLING SAME
    • 用于控制其的装置和装置
    • US20110310210A1
    • 2011-12-22
    • US12964676
    • 2010-12-09
    • Tatsuo FurukawaNobuyuki HirayamaRyo KasaiShinichi OmoHiroyuki NakamuraKimiyuki Hayasaki
    • Tatsuo FurukawaNobuyuki HirayamaRyo KasaiShinichi OmoHiroyuki NakamuraKimiyuki Hayasaki
    • B41J2/35
    • B41J2/07B41J2/04541B41J2/04546B41J2/355
    • A device includes a first element substrate and a second element substrate for driving a driving element; a first signal input unit connected to an input terminal of the first element substrate; a second signal input unit connected to an input terminal of the second element substrate; and a signal output unit. Each of the first and second element substrates includes a driving element, a first signal generation unit configured to output a first signal, a second signal generation unit configured to output a second signal, an input terminal, an output terminal, and a selection unit configured to receive a signal from the first and the second signal generation units, select one of a state of the first signal, a state of the second signal, and a high-impedance state on the basis of the selection signal input from the input terminal, and output the state to the output terminal.
    • 一种器件包括用于驱动驱动元件的第一元件基板和第二元件基板; 连接到第一元件基板的输入端的第一信号输入单元; 连接到第二元件基板的输入端的第二信号输入单元; 和信号输出单元。 第一和第二元件基板中的每一个包括驱动元件,被配置为输出第一信号的第一信号生成单元,被配置为输出第二信号的第二信号生成单元,输入端子,输出端子和配置的选择单元 为了从第一和第二信号发生单元接收信号,基于从输入端输入的选择信号选择第一信号的状态,第二信号的状态和高阻抗状态中的一个, 并将该状态输出到输出端子。