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    • 5. 发明授权
    • Motor driving circuit and method
    • 电机驱动电路及方法
    • US5811953A
    • 1998-09-22
    • US771807
    • 1996-12-20
    • Sumio WatanabeKatsuhiro MaedaShuko Yamaji
    • Sumio WatanabeKatsuhiro MaedaShuko Yamaji
    • H02P8/10H02P8/00H02P8/12H02P27/02H02P1/54
    • H02P8/12H02P27/02H02P29/026
    • A motor driving circuit coupled to a motor having a plurality of phases of coils includes a standard power source generating a first power supply voltage, and a step-up power source for generating a second power supply voltage greater than the first power supply voltage. A selecting circuit selects either the first power supply voltage or the second power supply voltage in response to a selecting signal. A motor driving circuit causes currents to flow in the phases of the motor in accordance with motor driving signals respectively related to the phases in a state in which a selected power supply voltage output by the selecting circuit is applied to one or more phases. A switching unit generates the selecting signal on the basis of the motor driving signals and a voltage signal corresponding to a current flowing through at least one of the phases of the motor so that the second power supply voltage is selected first and the first power supply voltage is selected second with respect to each of the phases.
    • 耦合到具有多相线圈的电动机的电动机驱动电路包括产生第一电源电压的标准电源和用于产生大于第一电源电压的第二电源电压的升压电源。 选择电路响应于选择信号选择第一电源电压或第二电源电压。 电动机驱动电路根据在由选择电路输出的选定电源电压施加到一个或多个相的状态下,根据与相位分别相关的电动机驱动信号,使电流在电动机的相位中流动。 开关单元基于电动机驱动信号和对应于流过电动机的至少一相的电流的电压信号来产生选择信号,使得首先选择第二电源电压和第一电源电压 相对于每个相位被选择为第二。
    • 8. 发明授权
    • Thermal printer apparatus
    • 热敏打印机设备
    • US5319390A
    • 1994-06-07
    • US766135
    • 1991-09-27
    • Sumio WatanabeShuko YamajiKatsuhiro Maeda
    • Sumio WatanabeShuko YamajiKatsuhiro Maeda
    • B41J2/355G06K15/02B41J2/36
    • B41J2/3551G06K15/028
    • An object of this invention is to present a thermal printer for printing at high speed the data with the drive at a low voltage of around 5 V while preventing the printing problems attributable to the voltage drop due to internal impedance and to the loss inside the head coming from the common conductor inside the head. The thermal printer has a plurality of heating elements.The thermal printer comprises a print head consisting of the print blocks which have divided the heating elements at every stipulated quantity and a heating means for electrically heating the heating elements on the basis of the stipulated data at every print block wherein the heating means has been structured to simultaneously heat the heating elements against a plurality of print blocks to color the thermosensitive paper in contact with the heating elements of the print block.
    • 本发明的目的是提供一种热敏打印机,用于以大约5V的低电压高速打印驱动器的数据,同时防止由于内部阻抗引起的电压降和打印头内的损失引起的打印问题 来自头内的共同指挥。 热敏打印机具有多个加热元件。 热敏打印机包括由按照规定数量分割加热元件的打印块组成的打印头和根据每个打印块上规定的数据电加热加热元件的加热装置,其中加热装置已被构造 以将加热元件同时加热到多个印刷块以使与热敏元件接触的热敏纸着色。