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9 条记录 (耗时 0.009 秒)

    Compensation circuit for multiple speed printer
    1.
    发明公开
    Compensation circuit for multiple speed printer 失效
    多速打印机补偿电路

    公开(公告)号：EP0098375A3

    公开(公告)日：1985-07-03

    申请号：EP83104954

    申请日：1983-05-19

    申请人： International Business Machines Corporation

    发明人： Carrington, James Edward ,  Hryck, Michael David ,  Skinner, Dean William ,  Westcott, Gerald Ralph

    IPC分类号： G06K15/08

    CPC分类号： G06K15/08

    摘要： @ The control system for a line printer includes compensation circuit means (29) for electronically changing the timing of the reference or home pulse to compensate for changes in the speed of the type characters (16) on a continuous type carrier (10).,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 (10) 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 (41) which checks the character signal produced by the type position circuitry of the printer controls.

    Control system for timing hammers of impact printers
    5.
    发明公开
    Control system for timing hammers of impact printers 失效
    定时冲击打印机的控制系统

    公开(公告)号：EP0083694A3

    公开(公告)日：1986-01-08

    申请号：EP82109510

    申请日：1982-10-14

    申请人： International Business Machines Corporation

    发明人： Dayger, Douglas Allan ,  Hryck, Michael David ,  Skinner, Dean William ,  Westcott, Gerald Ralph

    IPC分类号： B41J09/26 ,  G06K15/08

    CPC分类号： B41J9/46

    摘要： A hammer timing control system for a line printer has a register for continually storing a digital delay fire quantity representative of the actual flight of a controlled hammer. A delay fire counter activated by an initiate fire pulse from hammer selection circuitry of the printer control system counts the timing pulses from a clock means until it registers a count equal to the delay quantity stored in the delay fire register. A comparator circuit is connected to both the delay value register and the counter and generates a hammer fire signal when the delay quantity and the count are equal. The single counter continues counting clock pulses until a second count is registered which is equal to a terminate fire value. The control system provides circuit means responsive to the second count registered in the counter to terminate the hammer fire signal. In one embodiment, the terminate fire circuitry comprises a decode connected to the output of the counter means for detecting the second count condition. In a second embodiment, the control system has a second register which stores a terminate fire quantity which represents a fixed time after the initiate fire signal and prior to hammer impact. In a third embodiment, the counter is an up/down counter which counts in one direction to turn on the hammer driver circuit and in the other direction to turn off the hammer driver circuit. The delay fire quantities for the plurality of hammers are preferably stored in an external memory device for transfer to the individual registers for each of the print hammers. The external storage may be a magnetic record such as a disk.

    Control system for timing hammers of impact printers
    6.
    发明公开
    Control system for timing hammers of impact printers 失效
    锤子的冲击打印机定时控制系统。

    公开(公告)号：EP0083694A2

    公开(公告)日：1983-07-20

    申请号：EP82109510.6

    申请日：1982-10-14

    申请人： International Business Machines Corporation

    发明人： Dayger, Douglas Allan ,  Hryck, Michael David ,  Skinner, Dean William ,  Westcott, Gerald Ralph

    IPC分类号： B41J9/26 ,  G06K15/08

    CPC分类号： B41J9/46

    摘要： A hammer timing control system for a line printer has a register for continually storing a digital delay fire quantity representative of the actual flight of a controlled hammer. A delay fire counter activated by an initiate fire pulse from hammer selection circuitry of the printer control system counts the timing pulses from a clock means until it registers a count equal to the delay quantity stored in the delay fire register. A comparator circuit is connected to both the delay value register and the counter and generates a hammer fire signal when the delay quantity and the count are equal. The single counter continues counting clock pulses until a second count is registered which is equal to a terminate fire value. The control system provides circuit means responsive to the second count registered in the counter to terminate the hammer fire signal. In one embodiment, the terminate fire circuitry comprises a decode connected to the output of the counter means for detecting the second count condition. In a second embodiment, the control system has a second register which stores a terminate fire quantity which represents a fixed time after the initiate fire signal and prior to hammer impact. In a third embodiment, the counter is an up/down counter which counts in one direction to turn on the hammer driver circuit and in the other direction to turn off the hammer driver circuit. The delay fire quantities for the plurality of hammers are preferably stored in an external memory device for transfer to the individual registers for each of the print hammers. The external storage may be a magnetic record such as a disk.

    Compensation circuit for multiple speed printer
    8.
    发明公开
    Compensation circuit for multiple speed printer 失效
    补偿电路，用于以不同的速度的打印机。

    公开(公告)号：EP0098375A2

    公开(公告)日：1984-01-18

    申请号：EP83104954.9

    申请日：1983-05-19

    申请人： International Business Machines Corporation

    发明人： Carrington, James Edward ,  Hryck, Michael David ,  Skinner, Dean William ,  Westcott, Gerald Ralph

    IPC分类号： G06K15/08

    CPC分类号： G06K15/08

    摘要： @ The control system for a line printer includes compensation circuit means (29) for electronically changing the timing of the reference or home pulse to compensate for changes in the speed of the type characters (16) on a continuous type carrier (10).,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 (10) 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 (41) which checks the character signal produced by the type position circuitry of the printer controls.