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公开(公告)号：US5120143A
公开(公告)日：1992-06-09
申请号：US554019
申请日：1990-07-17
CPC分类号： H01F7/1883 , B41J9/50
摘要： In a printing device employing a solenoid for driving a printing hammer, provided are switching member for ON/OFF operating electric current flowing through the solenoid coil, voltage generating member for generating voltage in accordance with the electric current, converting member for converting the generated voltage to a digital value, chopping member for comparing the converted digital value with a predetermined comparison value, while for turning on the switching member when the converted value is smaller than the predetermined comparison value and turning off the switching member when the converted value is larger than the predetermined comparison value, another chopping member for alternatively turning the switching member in another predetermined interval shorter than the predetermined interval, when the set value becomes similar to the comparison value, during said predetermined interval. Thus, the current deviation at each of the solenoid driving period are controlled to be limited in the desired range.
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公开(公告)号：US4527920A
公开(公告)日：1985-07-09
申请号：US503915
申请日：1983-06-13
申请人： John Mako
发明人： John Mako
CPC分类号： B41J9/50
摘要： Circuit for detecting variations in the nominal velocity of a character band and adjusting the hammer firing times to compensate for the variations. This circuit measures deviations in band velocity that are either faster or slower than a nominal velocity during each character emitter pulse and makes an appropriate correction in the subscan times that gate the hammer firing signals. A bidirectional counter is counted up at a high frequency to a value representing the emitter period including the velocity deviation and then counted down after the error determination at a selected frequency that is a preselected fraction of the high frequency. This technique corrects for each character emitter pulse and incorporates a timing proportionality to assure correct hammer impact.
摘要翻译： 用于检测字符带的标称速度的变化的电路，并且调整锤击次数以补偿变化。 该电路测量在每个字符发射极脉冲期间频带速度的偏差比标称速度更快或更慢，并且在敲击击发信号的次扫描时间内进行适当的校正。 双向计数器以高频计数到表示包括速度偏差在内的发射器周期的值，然后在作为高频的预选分数的选定频率的误差确定之后向下计数。 该技术校正每个字符发射器脉冲，并结合时序比例，以确保正确的锤击。
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公开(公告)号：US09908349B2
公开(公告)日：2018-03-06
申请号：US15222052
申请日：2016-07-28
发明人： Shu Satake , Masami Yamanashi , Michio Suzuki
CPC分类号： B41J23/32 , B41J2/335 , B41J3/36 , B41J3/46 , B41J9/50 , B41J29/38 , B41J29/393 , B41J2029/3932 , G06F3/121 , G06F3/1229
摘要： According to an embodiment, a printer includes a battery, a display, a memory and a processor. The memory stores a predetermined residual capacity of the battery of the printer and amount information of a printing medium on which a predetermined printing data can be printed with the predetermined residual capacity in association with each other in advance. The processor controls the display such that the amount information corresponding to the predetermined residual capacity stored in the memory is displayed on the display, in a case where determining that the residual capacity of the battery is reduced to less than the predetermined residual capacity.
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公开(公告)号：US4854756A
公开(公告)日：1989-08-08
申请号：US80769
申请日：1987-08-03
摘要： In a printer in which an elongated shuttle is driven in reciprocating fashion across a print paper with hammers mounted along the length of the shuttle being selectively fired to print dots on the paper, a timing system provides hammer fire pulses denoting the positions of the shuttle at which hammer firing should be initiated to print in the proper dot positions. Proper timing is maintained so as to allow for printing during acceleration and deceleration as well as during constant velocity movement of the shuttle by determining the average shuttle velocity between each successive pair of fence post pulses generated by a shuttle-coupled encoder. The average velocities are represented by the time lapses between occurrence of the pairs of fence post pulses which are measured and stored during each startup of the printer as well as each time the nominal operating shuttle velocity is changed as part of a change in printer operation. Dot positions are represented by a percentage of the distance between a pair of fence post pulses, such that the time of occurrence of each dot position following the immediately prior fence post pulse can be determined by applying the percentage to the stored time lapse between the pair of pulses. The time position of each dot position as so determined is stepped back by the fixed hammer flight time to arrive at the hammer fire pulse times which are referenced to the immediately prior fence post pulse and which are used during each stroke of the shuttle.
摘要翻译： 在打印机中，细长梭子以往复方式穿过打印纸被驱动，沿着梭子的长度安装的锤被选择性地点燃以在纸上打印点，定时系统提供表示梭子的位置的锤击火脉冲 应该开始锤击射击以在适当的点位置打印。 保持适当的定时，以便允许在加速和减速期间以及通过确定穿梭耦合的编码器产生的每个连续的一对栅栏柱脉冲之间的平均梭速度在梭子的恒定速度移动期间进行打印。 平均速度由打印机每次启动期间测量和存储的栅栏柱脉冲对之间的时间间隔以及每当打印机操作的改变的一部分改变时，每时间间隔表示。 点位置由一对栅栏脉冲之间的距离的百分比表示，使得可以通过将百分比应用于对之间存储的时间间隔来确定紧接在之前的栅栏后脉冲之后的每个点位置的出现时间 的脉冲。 如此确定的每个点位置的时间位置通过固定的锤子飞行时间被退回，以获得参考先前的挡板后脉冲并且在穿梭的每个冲程期间使用的锤击火焰脉冲时间。
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公开(公告)号：US5180235A
公开(公告)日：1993-01-19
申请号：US892473
申请日：1992-06-02
申请人： Tetsuya Saito
发明人： Tetsuya Saito
CPC分类号： B41J9/42 , B41J9/50 , G01N2203/0083
摘要： An impact printer has a platen, a carriage movable in parallelism to the platen, a hammer carried on the carriage, driving means for protruding the hammer toward the platen, detecting means for detecting the speed of the hammer striking against the platen and returned therefrom, and control means for changing over the speed at which the hammer is protruded toward the platen in conformity with the result of the detection of the detecting means.
摘要翻译： 冲击式打印机具有台板，与台板平行移动的托架，托架上的锤子，用于将锤子朝向台板突出的驱动装置的检测装置，用于检测撞击台板的锤击速度并返回， 以及控制装置，用于根据检测装置的检测结果，改变锤子朝向压板伸出的速度。
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公开(公告)号：US4514737A
公开(公告)日：1985-04-30
申请号：US493275
申请日：1983-05-10
申请人： Kuniaki Suzuki
发明人： Kuniaki Suzuki
摘要： According to this invention, a voltage signal generating circuit is provided for generating a voltage signal in synchronism with a print timing signal produced when a printing head is driven. A detection circuit detects a power source voltage for driving the printing head. A driving pulse output circuit outputs a driving pulse signal having a pulse generating timing and pulse width corresponding to variations in the power source voltage, on the basis of the voltage signal which is output from the voltage signal generating circuit and detection signal which is output from the detection circuit. A driving circuit is adapted to drive a driving head with a printing timing and printing pressure corresponding to the driving pulse signal.
摘要翻译： 根据本发明，提供电压信号发生电路，用于与打印头被驱动时产生的打印定时信号同步地产生电压信号。 检测电路检测用于驱动打印头的电源电压。 驱动脉冲输出电路根据从电压信号发生电路输出的电压信号和从电压信号发生电路输出的检测信号输出具有对应于电源电压变化的脉冲产生定时和脉冲宽度的驱动脉冲信号， 检测电路。 驱动电路适于用对应于驱动脉冲信号的打印定时和打印压力来驱动驱动头。
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公开(公告)号：US4381532A
公开(公告)日：1983-04-26
申请号：US274933
申请日：1981-06-18
申请人： Robert W. Arnold
发明人： Robert W. Arnold
CPC分类号： B41J9/50 , H01H47/325
摘要： A constant energy drive circuit for an electromagnetic print hammer has a chopping circuit including a comparator which cycles a switch connecting the energizing coil of the print hammer to an unregulated power supply. Changes in the drive voltage of the unregulated source are compensated for by altering the switching rate of the switch by adjusting the amplitude of a reference signal applied to the comparator. The reference signal adjustment is inverse to changes in the drive voltage.
摘要翻译： 用于电磁打印锤的恒定能量驱动电路具有斩波电路，该斩波电路包括使连接打印锤的激励线圈的开关与未调节的电源连接的开关的比较器。 通过调整施加到比较器的参考信号的幅度来改变开关的开关速率来补偿未调节源的驱动电压的变化。 参考信号调整与驱动电压的变化相反。
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8.发明授权
公开(公告)号：US3789272A
公开(公告)日：1974-01-29
申请号：US3789272D
申请日：1972-08-31
申请人： PHILIPS CORP
发明人： VOLLHARDT D
CPC分类号： H04L13/182 , B41J9/50 , H03K17/64 , H03K17/72 , H03K17/73 , H03K17/735
摘要： A triggering circuit for a plurality of printing solenoids that insures the uniform density of the printed matter by producing actuating pulses of a duration varying as an inverse function of the supply voltage. The natural energy integration of printing solenoids causes the solenoid to print with a uniform force in response to short-duration, high voltage energization, and longduration, low voltage energization.
摘要翻译： 用于多个打印螺线管的触发电路，其通过产生作为电源电压的反函数而变化的持续时间的致动脉冲来确保印刷物的均匀密度。 印刷电磁线圈的自然能量整合使得螺线管能够响应于短时间，高电压通电以及长时间，低电压通电而以均匀的力进行打印。
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公开(公告)号：US4665371A
公开(公告)日：1987-05-12
申请号：US886857
申请日：1986-07-18
申请人： Ali T. Mazumder
发明人： Ali T. Mazumder
摘要： A circuit for controlling the firing of a print hammer so as to maintain constant intercharacter spacing during printing. The speed of a motor which moves a document in printing relationship with a printer is used to ascertain the instantaneous velocity of the document just prior to the firing of a hammer associated with the printer. An up/down counter is used in determining the delay, if any, in firing the hammer to compensate for instantaneous velocities which are slower than the fastest velocity of document travel expected.
摘要翻译： 一种用于控制打印锤的点火以在打印期间保持恒定的字符间距的电路。 使用移动与打印机的打印关系的文档的马达的速度来确定在与打印机相关联的锤子点火之前的文档的瞬时速度。 使用向上/向下计数器来确定击发锤的延迟（如果有的话）以补偿比预期的文件行程的最快速度慢的瞬时速度。
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公开(公告)号：US4293888A
公开(公告)日：1981-10-06
申请号：US51580
申请日：1979-06-25
申请人： Vincent D. McCarty
发明人： Vincent D. McCarty
CPC分类号： B41J1/24 , B41J9/50 , H01H47/325
摘要： A print hammer drive circuit is driven by a voltage supply having inherent voltage variations. The driving current is applied to the print hammer coil and the level of the current in the coil detected. After the level of the current in the coil reaches a predetermined maximum level a timing circuit is initiated to control the duration of application of maximum current. Variations in supply voltage on the duration and force of strike of the print hammer have greatly reduced since all timing is based relative to the time that the predetermined drive current level is achieved as distinguished from timing which includes the rise time of the driving current wave form. Also the effects of variations in inductance from coil to coil can be compensated for by adjustment of the timing circuit.
摘要翻译： 打印锤驱动电路由具有固有电压变化的电压源驱动。 驱动电流被施加到打印锤线圈并检测到线圈中的电流的电平。 在线圈中的电流电平达到预定的最大电平之后，启动定时电路以控制最大电流的施加持续时间。 所有打印锤的持续时间和打击力的电源电压的变化都大大降低，因为所有的定时都是相对于与包括驱动电流波形的上升时间的定时不同的时间相对于实现预定驱动电流电平的时间 。 此外，可以通过调整定时电路来补偿从线圈到线圈的电感变化的影响。
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