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公开(公告)号：EP0380352A3
公开(公告)日：1990-10-10
申请号：EP90300820.9
申请日：1990-01-26
发明人： Fukano, Takakazu, c/o Seiko Epson Corporation , Nishizawa, Katsuhiko, c/o Seiko Epson Corporation
IPC分类号： B41J2/30
CPC分类号： B41J2/30
摘要： The invention provides a circuit for activating the print head of a wire printer, in which print levers are attracted by respective actuator coils (19, 70) for advancing print wires fixed to the lever ends to print dots. The activating circuit comprises a first switching device (13, 69) having an input connected to a terminal (V p ) of a DC power supply and an output connected to one terminal of each of the actuator coils, and a second switching device (41, 71) connected to the other terminal of each of the actuator coils and also to ground. Counter electro-motive force absorbing means (44, 73, 74) are coupled to the actuator coils. First driving signal generating means (7, 66) produce a first driving signal to control the first switching means in response to a print timing control signal, the first driving signal having a duration T₁. Second driving signal generating means (16, 75) produce a second driving signal to control the second switching means, the second driving signal having a duration T₂ which is longer than the duration T₁. Delaying means (15, 67) are also provided for delaying the second driving signal relative to the first driving signal such that the first switching device is switched on simultaneously with or earlier than the second switching device.
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公开(公告)号：EP0367059A3
公开(公告)日：1990-09-12
申请号：EP89119604.0
申请日：1989-10-23
发明人： Anderson, Keith Howard , Leith, Victor Scot , Malkemes, Charles David , Myers, Robert Andrew , Thompson, Thomas Warren
CPC分类号： B41J2/30
摘要： A wire fire control mechanism is provided for use in a wire matrix printer for controlling the firing of the print wires (44) as the printhead (24) moves across a print receiving medium (40). This wire fire control mechanism enables printing to be accomplished for a wide range of different printhead (24) speeds. It also enables printing to be accomplished while the printhead (24) is accelerating or decelerating.
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公开(公告)号：EP0373870A2
公开(公告)日：1990-06-20
申请号：EP89312944.5
申请日：1989-12-12
发明人： Futagawa, Yoshikiyo c/o Seiko Epson Corporation , Nishizawa, Katsuhiko c/o Seiko Epson Corporation
CPC分类号： B41J2/30 , H01F7/1883
摘要： A dot wire driving apparatus for a printer which has a stabilised power source (3) including a smoothing coil (PL) and a smoothing capacitor (C₁) for energising a driving coil (L i ) for driving a dot wire (14) so as to form a dot on a printing medium, comprises a capacitor (C₂) for storing electro-magnetic energy accumulated in the driving coil (L i ) when current supplied thereto is terminated. A feedback loop (20, 22) feeds energy from the capacitor (C₂) to the smoothing capacitor (C₁) when the voltage of the former reaches a pre-determined level. Control circuitry (23, RD) maintains the voltage of the capacitor (C₂) so that its voltage does not fall below the pre-determined level.
摘要翻译： 一种用于打印机的点线驱动装置，其具有包括用于激励用于驱动点线（14）的驱动线圈（Li）的平滑线圈（PL）和平滑电容器（C1）的稳定电源（3），以便 在打印介质上形成点，包括用于存储驱动线圈（Li）中的电磁能量的电容器（C2），当电流被提供给终端时。 当前者的电压达到预定电平时，反馈回路（20,22）将能量从电容器（C2）馈送到平滑电容器（C1）。 控制电路（23，RD）维持电容器（C2）的电压，使其电压不会低于预定电平。
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公开(公告)号：EP0366497A2
公开(公告)日：1990-05-02
申请号：EP89311141.9
申请日：1989-10-27
发明人： Tanuma, Jiro c/o Oki Elec. Ind. Co., Ltd. , Sakaino, Hiroshi c/o Oki Elec. Ind. Co., Ltd. , Ishimizu, Hideaki c/o Oki Elec. Ind. Co., Ltd. , Komori, Chihiro c/o Oki Elec. Ind. Co., Ltd. , Kasai, Tadashi c/o Oki Elec. Ind. Co., Ltd.
IPC分类号： B41J2/30
CPC分类号： B41J2/30
摘要： In a driving apparatus for a wire-dot print head (1) having electromagnets (24) for driving print wires (12), each electromagnet comprising a core (21) and a coil (23), sensing coils (2) are provided in association with the respective electromagnets and provided to interlink the magnetic flux passing through the core (21) of the associated electromagnet (24), a magnetic flux detecting circuit (3) is connected to the sensing coils (2) for detecting the magnetic flux passing through the core, and a control (6) and drive (5) circuit is responsive to the detected magnetic flux for deciding the termination of the energization of the drive coil.
摘要翻译： 在具有用于驱动印刷线（12）的电磁体（24）的丝印打印头（1）的驱动装置中，每个包括芯（21）和线圈（23）的电磁体设置在感测线圈 与相应的电磁体相关联并且被提供以将通过相关联的电磁体（24）的芯部（21）的磁通量相互连接，磁通检测电路（3）连接到感测线圈（2），用于检测磁通量 并且控制器（6）和驱动器（5）电路响应于检测到的磁通量，以决定驱动线圈的通电结束。
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公开(公告)号：EP0348516A4
公开(公告)日：1990-04-10
申请号：EP88910116
申请日：1988-11-25
发明人： KIKUCHI HIROSHI , TANUMA JIRO , ISHIMIZU HIDEAKI , KOMORI CHIHIRO
IPC分类号： B41J2/30 , B41J25/308
CPC分类号： B41J25/3088 , B41J25/308
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公开(公告)号：EP0339794A1
公开(公告)日：1989-11-02
申请号：EP89303034.6
申请日：1989-03-28
发明人： Yamada, Tetsuhiro Oki Electric Industry Co. Ltd. , Koyama, Tatsuya Oki Electric Industry Co. Ltd. , Mutoh, Eisaku Oki Electric Industry Co. Ltd.
摘要： In a wire-dot print head which comprises print elements arranged in a ring, each having an electromagnets formed of a core (8) and a coil (9), and in which the electromagnets are divided into a plurality of blocks so that each block has a plurality of electromagnets, and a common current conduction control element is provided for each block and used to control current through the coils (9) of the electromagnets in the block, the electromagnets of each of at least some of the blocks are disposed so as not to be physically adjacent to each other. Because of the above arrangement, currents through the coils due to magnetic interference between the adjacent electromagnets is reduced and power consumption is reduced.
摘要翻译： 在包括布置在环中的打印元件的丝印打印头中，每个具有由芯（8）和线圈（9）形成的电磁体，并且其中电磁体被分成多个块，使得每个块 具有多个电磁体，并且为每个块提供公共电流传导控制元件，并且用于控制通过块中的电磁体的线圈（9）的电流，至少一些块中的每一个的电磁体被布置为 不要彼此物理上相邻。 由于上述结构，相邻电磁铁之间的磁干扰导致的线圈电流降低，功耗降低。
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公开(公告)号：EP1245394B1
公开(公告)日：2006-05-31
申请号：EP02007057.9
申请日：2002-03-27
申请人： MAX CO., LTD.
发明人： Iwaki, Kozo , Tsuchiya, Kenji
IPC分类号： B41J2/30
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公开(公告)号：EP1349732A1
公开(公告)日：2003-10-08
申请号：EP01991423.3
申请日：2001-12-20
摘要： A method of controlling noise in an impact printer that modulates the input pulse to the power amplifier of the printer. The resulting current waveform is then applied to the print wire solenoids. The final shape of the force input to the platen reduces or spreads the spectral envelope containing problem harmonics and acoustic output noise.
摘要翻译： 一种控制冲击打印机中的噪声的方法，所述冲击式打印机调制到打印机的功率放大器的输入脉冲。 然后将得到的电流波形施加到印刷线电磁铁上。 输入到压板的力的最终形状减小或扩展了包含问题谐波和声音输出噪声的频谱包络。
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59.发明授权
公开(公告)号：EP0881083B1
公开(公告)日：2002-03-13
申请号：EP98304237.5
申请日：1998-05-28
发明人： Tanaka, Minoru , Koike, Kiyofumi
CPC分类号： B41J29/38 , G06K15/10 , G06K2215/0077 , G06K2215/0085
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公开(公告)号：EP1093925A2
公开(公告)日：2001-04-25
申请号：EP00309276.4
申请日：2000-10-20
IPC分类号： B41J2/30
CPC分类号： B41J2/30
摘要： For a print head in an impact dot printer, a drive transistor 33 is connected in series to a head coil 59 that drives a print wire, and a pulse 32 is used to turn the drive transistor 33 on and off. Thus, the drive current i is supplied to the head coil 59 to drive the print wire. The input end of a DC/DC converter 2 is connected to the juncture of the head coil 59 and the drive transistor 33, and the output end of the DC/DC converter 2 is connected to the juncture of a power source 34 and the head coil 59. The DC/DC converter 2 clamps, at a constant level, e.g., 90V, the inductive electromotive force of a high voltage that is generated by the head coil 59 when the drive transistor 33 is rendered off. Then, the DC/DC converter 2 transforms the clamped voltage to a voltage equivalent to the voltage level of the power source 34, e.g., 35V. As a result, instead of energy being wasted by the transistor 33, the energy accumulated by the head coil 59 is returned to the power source 34 and can again be employed, while the input voltage of the DC/DC converter 2 is maintained at a constant level by an initial charger 4.
摘要翻译： 对于冲击点式打印机中的打印头，驱动晶体管33串联连接到驱动打印导线的头部线圈59，并且使用脉冲32打开和关闭驱动晶体管33。 因此，驱动电流i被提供给头部线圈59以驱动打印线。 DC / DC转换器2的输入端连接到头部线圈59和驱动晶体管33的接合处，并且DC / DC转换器2的输出端连接到电源34和头部的接合处 DC / DC转换器2在驱动晶体管33关闭时，以恒定的电平（例如，90V）钳位由头部线圈59产生的高电压的感应电动势。 然后，DC / DC转换器2将钳位电压转换为等于电源34的电压电平的电压，例如35V。 结果，代替由晶体管33浪费能量，头部线圈59积蓄的能量返回到电源34，并且可以再次使用，同时DC / DC转换器2的输入电压保持在a 恒定水平由初始充电器4。
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