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公开(公告)号：US4487121A
公开(公告)日：1984-12-11
申请号：US574828
申请日：1984-01-30
IPC分类号： G06F3/12 , B41J7/96 , B41J9/44 , B41J9/52 , B41J29/393 , B41J29/46 , G06K15/00 , G06K15/08 , B41J1/18 , B41J3/42 , H02H3/00
CPC分类号： B41J29/393 , B41J9/52 , G06K15/08
摘要： A fault protection system for impression devices of a printer detects fault current in the impression devices during non-print operation, checks the impression devices individually to determine the location of the fault and then disconnects the impression devices from the power supply. The fault protection system also includes means for recording the fault location data in a storage means which can be called out for later use in repairing the impression devices.
摘要翻译： 打印机的印象装置的故障保护系统检测印刷装置在非打印操作期间的故障电流，分别检查印模装置以确定故障位置，然后断开印模装置与电源的连接。 故障保护系统还包括用于将故障位置数据记录在存储装置中的装置，该存储装置可以被调出以备以后用于修复印象装置。
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公开(公告)号：US4821639A
公开(公告)日：1989-04-18
申请号：US84359
申请日：1987-08-12
CPC分类号： B41J9/46
摘要： A printer control apparatus provides a control circuit arrangement which enables flight timing to be performed during printing. Basically, the invention achieves this by providing flight time control means activated by a print hammer operation signal. Preferably the control temporarily inhibits the continuation of print hammer operation. Preferably the control inhibits print hammer operation subsequent to a selected print hammer by inhibiting the comparisons of print line and type element data contained in storage devices of the print control. Inhibiting may be for a fixed interval based on an average of the flight times of all the hammers. Alternatively the inhibiting interval may be varied according to the individual flight times of the hammers. In order to avoid slowing the print speed excessively, only one hammer is timed during printing of one line.
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公开(公告)号：US4597328A
公开(公告)日：1986-07-01
申请号：US676997
申请日：1984-11-30
CPC分类号： B41J9/46
摘要： A hammer timing control system for the print hammers of a line printer uses a plurality of read/write RAMs in place of individual fire control circuits for controlling the firing periods of the hammers. A delay value RAM stores individual delay values to be interposed before each hammer is fired, and a terminate fire RAM stores a delay value to be interposed before the firing of a hammer is terminated. The hammers are turned on and turned off by signals incrementally clocked out from two pairs of RAMs which store each hammer address at memory locations corresponding to the hammer's assigned delay values.
摘要翻译： 线打印机的打印锤的锤定时控制系统使用多个读/写RAM代替各个消防控制电路来控制锤的击发周期。 延迟值RAM存储在每个锤子被击发之前要插入的各个延迟值，并且终止火灾RAM存储在敲击锤击结束之前要插入的延迟值。 锤子被打开并被从两对RAM递增地输出的信号关闭，RAM对应于锤子的分配的延迟值的存储位置存储每个锤子地址。
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公开(公告)号：US4649501A
公开(公告)日：1987-03-10
申请号：US696212
申请日：1985-01-29
申请人： Robert D. Bloom , James E. Carrington , Richard A. Ide , Patrick J. Traglia , Gerald R. Westcott
发明人： Robert D. Bloom , James E. Carrington , Richard A. Ide , Patrick J. Traglia , Gerald R. Westcott
IPC分类号： G06K15/08
CPC分类号： G06K15/08 , Y10S347/90
摘要： A printer control system uses two microprocessors and a print control for operating a plurality of print hammers in synchronism with a revolving type carrier. One microprocessor is a mechanical control processor, the print hammers are operated by a self timed print control system and the other microprocessor is a print control processor that communicates with a host system for receiving print and control data used by the print control and the mechanical control processor for operating the printer. The mechanical control processor monitors a speed selection device such as an operator panel with speed control keys and operates controls for operating drive means for moving the type carrier at selected speeds. The print control processor supplies speed control data from a diskette to the mechanical control processor for control the type carrier speed.
摘要翻译： 打印机控制系统使用两个微处理器和打印控制来与旋转式载体同步地操作多个打印锤。 一个微处理器是机械控制处理器，打印锤由自定时打印控制系统操作，另一个微处理器是与主机系统进行通信的打印控制处理器，用于接收由打印控制和机械控制使用的打印和控制数据 处理器用于操作打印机。 机械控制处理器使用速度控制键监视诸如操作面板的速度选择装置，并操作用于操作驱动装置的控制装置，用于以所选择的速度移动类型载体。 打印控制处理器将速度控制数据从软盘提供给机械控制处理器，以控制类型载体的速度。
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5.发明授权
公开(公告)号：US4457229A
公开(公告)日：1984-07-03
申请号：US453012
申请日：1982-12-27
CPC分类号： G06K15/08
摘要： A control system for a band printer uses a correction memory which stores address correction values for resetting the start addresses of the address registers which operate to scan the band image and print line buffers. The correction memory is programmable to store different sets of address correction values when type bands having different size character sets and/or pitch are interchanged.
摘要翻译： 用于带式打印机的控制系统使用校正存储器，该校正存储器存储用于重置用于扫描频带图像和打印行缓冲器的地址寄存器的起始地址的地址校正值。 当具有不同大小字符集和/或音调的类型频带被互换时，校正存储器是可编程的以存储不同组的地址校正值。
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公开(公告)号：US4376411A
公开(公告)日：1983-03-15
申请号：US353287
申请日：1982-03-01
摘要： A hammer limit control for an on-the-fly line printer comprises a counter which counts compare signals from a compare circuit which detects coincidences of print data and type position data in synchronism with the motion of an endless type carrier. The counter maintains a running count of the number of compare signals for a control interval having a duration which is a function of the printing interval of a print line cycle. A hammer on storage device stores a plurality of compare counts registered by the counter at the end of each of a plurality of control intervals. An adder adds the running count registered in the counter to the total count stored in the storage means and stores the total sum in a hammer on register. When the total sum in the hammer on register equals a maximum number, a limit comparator generates a control signal which inhibits further comparisons by the compare circuit. The content of the hammer on storage device is updated each control interval by transferring the compare count registered in the compare counter to the storage device and by deleting the oldest count in the hammer on storage after a predetermined number of control intervals. The maximum number is stored in a register which is programmable.
摘要翻译： 用于飞行式打印机的锤击限制控制器包括计数器，其对来自检测与打印数据的重合和类型位置数据的同步的比较电路的信号进行计数。 该计数器维持具有作为打印行周期的打印间隔的函数的持续时间的控制间隔的比较信号数的运行计数。 存储装置上的锤子存储在多个控制间隔的每一个结束时由计数器登记的多个比较计数。 加法器将在计数器中登记的运行计数器加到存储装置中存储的总计数中，并将总和存入锤位寄存器。 当寄存器中的锤子中的总和等于最大数量时，限制比较器产生禁止比较电路进一步比较的控制信号。 通过将登录在比较计数器中的比较计数器传送到存储装置，并且通过在预定数量的控制间隔之后删除存储器中的锤子中的最旧计数，每个控制间隔更新存储装置上的锤的内容。 最大数量存储在可编程寄存器中。
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公开(公告)号：US4425844A
公开(公告)日：1984-01-17
申请号：US391313
申请日：1982-06-23
CPC分类号： G06K15/08
摘要： The control system for a line printer includes compensation circuit means for electronically changing the timing of the reference or home pulse to compensate for changes in the speed of the type characters on a continuous type carrier. The compensation circuit includes a storage register, a counter and a comparison circuit for comparing the content of the storage register and the counter. The counter when activated by a reference pulse generated from a reference mark on the moving type carrier counts subscan pulses generated from timing marks moving with the type characters. The storage register, which is programmable, stores different numeric values dependent on the speed of the type carrier representing different numbers of subscan pulses to be counted by the counter means. The comparator circuit compares the numeric value in the register with the count registered in the counting means. When an equality is detected, the comparator circuit generates a modified reference or sync pulse which is applied to sync control circuitry which checks the character signal produced by the type position circuitry of the printer controls.
摘要翻译： 线路打印机的控制系统包括补偿电路装置，用于电子地改变基准或原点脉冲的定时，以补偿连续型载波上的类型字符的速度变化。 补偿电路包括用于比较存储寄存器和计数器的内容的存储寄存器，计数器和比较电路。 当由移动型载体上的参考标记产生的参考脉冲激活时，计数器计数从用类型字符移动的定时标记产生的副扫描脉冲。 可编程的存储寄存器存储取决于由计数器装置计数的副扫描脉冲的不同数目的载波类型的速度的不同数值。 比较器电路将寄存器中的数值与计数装置中登记的计数进行比较。 当检测到相等时，比较器电路产生修改的参考或同步脉冲，其被施加到同步控制电路，该同步控制电路检查由打印机控制的类型位置电路产生的字符信号。
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公开(公告)号：US5047921A
公开(公告)日：1991-09-10
申请号：US304777
申请日：1989-01-31
IPC分类号： G06F15/16 , G06F13/16 , G06F15/167 , G06F15/177
CPC分类号： G06F15/167 , G06F13/1663
摘要： a system of arbitration for access to a common memory by two asynchronous microprocessors without excluding either microprocessor for more than a predetermined, limited period of time. Two asynchronous microprocessors are connected to a common memory through an arbitration controller with a connection to transmit a "not ready" signal to one microprocessor requesting access when the other is in the process of accessing the common memory. A flip flop is connected to generate a predetermined signal output when a microprocessor requires access to the common memory, and this predetermined signal initiates a shift register to provide the internal timing of the asynchronous microprocessor requiring such access to bring it into synchronism with the clock controlling the internal cycle of the common memory. When there is contention for access to the common memory, a flip flop connects one microprocessor to the common memory, where such connection is maintained only for a predetermined, limited period of time, when access is returned to the first microprocessor. Access to the common memory by any microprocessor is always for only this one, predetermined, limited period of time.
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公开(公告)号：US4440079A
公开(公告)日：1984-04-03
申请号：US338709
申请日：1982-01-11
CPC分类号： B41J9/46
摘要： A hammer timing control system for a line printer has a register for storing a digital delay value related to the actual flight time of a controlled print hammer. A delay counter activated by an initiate fire pulse counts timing pulses until the count equals the delay value in the register. A comparator generates a fire signal when the count equals the delay value in the register. The counter continues counting pulses to a second count whereupon the fire signal is terminated. The second count is either decoded or compared with a predetermined quantity in a second register to terminate the fire signal. The counter may also be an up/down counter which counts up to delay and down to terminate the fire signal. Delay values can be stored in an external memory device such as a magnetic disk for transfer to the individual registers for each of the print hammers.
摘要翻译： 线打印机的锤击定时控制系统具有用于存储与受控打印锤的实际飞行时间相关的数字延迟值的寄存器。 由启动的脉冲激活的延迟计数器计数定时脉冲，直到计数等于寄存器中的延迟值。 当计数等于寄存器中的延迟值时，比较器产生一个点火信号。 计数器继续将脉冲计数到第二计数，从而触发信号终止。 在第二寄存器中将第二计数解码或与预定量进行比较以终止起火信号。 计数器也可以是向上/向下计数器，其计数到延迟和下降以终止火信号。 延迟值可以存储在诸如磁盘的外部存储器件中，用于传送到每个打印锤的各个寄存器。
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