-
公开(公告)号：US4540951A
公开(公告)日：1985-09-10
申请号：US523258
申请日：1983-10-27
申请人： Akio Ozawa , Susumu Sueyoshi , Keishi Sato , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
发明人： Akio Ozawa , Susumu Sueyoshi , Keishi Sato , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
CPC分类号： H03F3/26 , H03F1/32 , H03F1/3217 , H03F1/34 , H03F3/30 , H03F3/3076
摘要： A push-pull amplifer circuit using bipolar transistors in which non-linear distortion caused by the base-emitter voltages of the amplifying transistors of the circuit is eliminated without the use of negative AC feedback and in which variations in a DC output level at the output terminal of the amplifier are detected and fed back to the input side of the amplifier whereby the stability of the circuit at very low frequencies is remarkably improved. A first amplifier stage includes a first transistor having a base to which an input signal is applied and a second transistor the base of which is coupled to an output of the first transistor with the second transistor being of the opposite conductivity type of the first transistor. A current mirror circuit supplies currents to the first and second transistors with the currents thus supplied having a constant ratio. A second amplifying stage is provided having the same construction. A load is coupled to be driven by the current flowing through the first transistor in the first amplifying stage and by the corresponding transistor in the second amplifying stage. Variations in the output of the circuit are detected to provide a DC feedback voltage which is coupled back to emitter circuits in the input stages of the amplifier.
摘要翻译： 使用双极晶体管的推挽放大电路，其中消除了由电路的放大晶体管的基极 - 发射极电压引起的非线性失真，而不使用负的AC反馈，并且其中输出端的DC输出电平的变化 检测放大器的端子并将其反馈到放大器的输入侧，从而显着提高电路在非常低频率下的稳定性。 第一放大器级包括第一晶体管，其具有施加输入信号的基极和第二晶体管，第二晶体管的基极耦合到第一晶体管的输出，第二晶体管具有与第一晶体管相反的导电类型。 电流镜电路以这样提供的具有恒定比例的电流向第一和第二晶体管提供电流。 提供具有相同结构的第二放大级。 负载被耦合以由流过第一放大级中的第一晶体管的电流和第二放大级中的相应晶体管驱动。 检测电路输出的变化以提供DC反馈电压，该反馈电压被耦合回到放大器的输入级中的发射极电路。
-
公开(公告)号：US4433305A
公开(公告)日：1984-02-21
申请号：US188792
申请日：1980-09-19
申请人： Akio Ozawa , Susumu Sueyoshi , Keishi Sato , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
发明人： Akio Ozawa , Susumu Sueyoshi , Keishi Sato , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
CPC分类号： H03F3/26 , H03F1/32 , H03F1/3217 , H03F1/34 , H03F3/30 , H03F3/3076
摘要： A push-pull amplifier circuit using bipolar transistors in which non-linear distortion caused by the base-emitter voltages of the amplifying transistors of the circuit is eliminated without the use of negative AC feedback and in which variations in a DC output level at the output terminal of the amplifier are detected and fed back to the input side of the amplifier whereby the stability of the circuit at very low frequencies is remarkably improved. A first amplifier stage includes a first transistor having a base to which an input signal is applied and a second transistor the base of which is coupled to an output of the first transistor with the second transistor being of the opposite conductivity type to the first transistor. A current mirror circuit supplies currents to the first and second transistors with the currents thus supplied having a constant ratio. A second amplifying stage is provided having the same construction. A load is coupled to be driven by the current flowing through the first transistor in the first amplifying stage and by the corresponding transistor in the second amplifying stage. Variations in the output of the circuit are detected to provide a DC feedback voltage which is coupled back to emitter circuits in the input stages of the amplifier.
摘要翻译： 使用双极晶体管的推挽放大器电路，其中消除由电路的放大晶体管的基极 - 发射极电压引起的非线性失真，而不使用负的AC反馈，并且其中输出端的DC输出电平的变化 检测放大器的端子并将其反馈到放大器的输入侧，从而显着提高电路在非常低频率下的稳定性。 第一放大器级包括第一晶体管，其具有施加输入信号的基极和第二晶体管，第二晶体管的基极耦合到第一晶体管的输出，第二晶体管具有与第一晶体管相反的导电类型。 电流镜电路以这样提供的具有恒定比例的电流向第一和第二晶体管提供电流。 提供具有相同结构的第二放大级。 负载被耦合以由流过第一放大级中的第一晶体管的电流和第二放大级中的相应晶体管驱动。 检测电路输出的变化以提供DC反馈电压，该反馈电压被耦合回到放大器的输入级中的发射极电路。
-
公开(公告)号：US5110227A
公开(公告)日：1992-05-05
申请号：US648455
申请日：1991-01-30
摘要： A color printer according to the present invention includes a clutch means, an urging member and a positional alignment mechanism. The clutch means is used for engaging and disengaging a driving force used to move a paper holder means. The urging member (e.g., a spring) is used to urge the paper holder means in a direction opposite to the printing direction. The positional alignment mechanism is used for mechanically determining the position at which printing is to start on the paper when the paper holder means is disengaged from the driving force by the clutch means and is urged by the urging member in the direction opposite to the printing direction.
摘要翻译： 根据本发明的彩色打印机包括离合器装置，推动构件和位置对准机构。 离合器装置用于接合和分离用于移动纸保持器装置的驱动力。 推动构件（例如，弹簧）用于沿与打印方向相反的方向推动纸张保持装置。 位置对准机构用于机械地确定当纸张保持装置通过离合器装置脱离驱动力时打印在纸张上的位置，并且被推动构件沿与打印方向相反的方向推动 。
-
公开(公告)号：US4912486A
公开(公告)日：1990-03-27
申请号：US339532
申请日：1989-04-17
申请人： Masamichi Yumino
发明人： Masamichi Yumino
CPC分类号： B41J29/00
摘要： A sublimation type thermal printer has a platen drum that is rotated with a sheet of recording paper placed thereon and a thermal head which is pressed against the recording paper through a dye donor film to heat the film so as to transfer a coloring matter from the film to the recording paper, thereby forming a desired image thereon. The thermal printer is provided with a fusing drum which is brought into contact with the recording paper on the platen drum to heat and thereby stabilize the coloring matter which has been transferred to the recording paper. The temperature of that surface of the fusing drum which is brought into contact with the recording paper is controlled on the basis of both the temperature of the drum surface and the temperature of the thermal head. In the formation of a full-color image with three dyes of different colors, the recording paper is heated by the fusing drum after the third dye has been transferred by the third turn of the platen drum. Thus, the dyes transferred to the recording paper are heated and the dye transferred last is satisfactorily diffused to achieve stablilized fixing.
摘要翻译： 一种升华型热敏打印机具有一个压纸卷筒，其中放置有一张记录纸的旋转辊，以及一个通过染料供体膜压在记录纸上的热敏头，以加热该薄膜，以便从该胶片中转移着色剂 从而在其上形成期望的图像。 该热敏打印机设置有一个定影鼓，该定影鼓与压纸滚筒上的记录纸接触，以加热已经转印到记录纸上的色素。 基于鼓表面的温度和热敏头的温度来控制与记录纸接触的定影鼓的表面的温度。 在用不同颜色的三种染料形成全色图像时，在第三染料在压纸滚筒的第三圈转印之后，记录纸被定影鼓加热。 因此，转印到记录纸上的染料被加热，最后转移的染料令人满意地扩散以达到稳定的固定。
-
公开(公告)号：US4356455A
公开(公告)日：1982-10-26
申请号：US187891
申请日：1980-09-17
申请人： Akio Ozawa , Susumu Sueyoshi , Keishi Saito , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
发明人： Akio Ozawa , Susumu Sueyoshi , Keishi Saito , Kikuo Ishikawa , Kiyomi Yatsuhashi , Satoshi Ishii , Masamichi Yumino
摘要： An amplifier circuit in which the non-linear distortion of the amplifier transistors caused by non-linear base-emitter input and output characteristics is eliminated without the use of negative feedback. A first transistor and a second transistor of opposite conductivity type are coupled with the output of the first transistor connected to the base of the second transistor and with an input signal applied to the base of the first transistor. Currents are applied to the first and second transistors, such as with the current mirror circuit, in such a manner that the ratio of the currents is a predetermined constant value. Bias voltages are applied to the circuit such that the ratio of the collector-emitter voltage of the first transistor to the collector-emitter voltage of the second transistor is the reciprocal of the predetermined constant value.
摘要翻译： 在不使用负反馈的情况下消除由非线性基极 - 发射极输入和输出特性引起的放大器晶体管的非线性失真的放大器电路。 具有相反导电类型的第一晶体管和第二晶体管与连接到第二晶体管的基极的第一晶体管的输出和施加到第一晶体管的基极的输入信号耦合。 电流通过电流镜电路施加到第一和第二晶体管，使得电流的比例是预定的常数值。 将偏置电压施加到电路，使得第一晶体管的集电极 - 发射极电压与第二晶体管的集电极 - 发射极电压之比为预定常数值的倒数。
-
-
-
-
搜索结果
5 条记录 (耗时 0.008 秒)