Device for measuring thickness of a form document in an impact printer
    11.
    发明授权
    Device for measuring thickness of a form document in an impact printer 失效
    用于测量冲击式打印机中纸张文档厚度的装置

    公开(公告)号:US06502058B1

    公开(公告)日:2002-12-31

    申请号:US09663384

    申请日:2000-09-15

    IPC分类号: G01B1102

    CPC分类号: B41J11/0035

    摘要: A thickness of a form document loaded in a pin feed tractor is measured to appropriately adjust a gap between a platen and a print head. A projection formed on a pressing block is linearly moved toward and away from the form document supported on a tractor cover. The pressing block is moved by a stepping motor, and an amount of rotations of the stepping motor is detected to measure the movement of the projection. A first amount of rotations is detected under a condition where the form document is not loaded and subsequently a second amount of rotations is detected under a condition where the form document is loaded. The thickness of the form document is computed based on a difference between the first amount of rotations and the second amount of rotations to eliminate influence of resilient deformation of the tractor cover.

    摘要翻译: 测量装载在销钉拖拉机中的成形纸的厚度,以适当地调节压板和打印头之间的间隙。 形成在压块上的突起线线性地移动到远离支撑在拖拉机罩上的成形文件。 按压块由步进电机移动,并且检测步进电机的旋转量以测量突起的移动。 在表单文件未加载的情况下检测到第一转数,随后在加载表单文件的条件下检测到第二转数。 基于第一转速和第二转速之间的差异来计算形式文件的厚度,以消除拖拉机盖的弹性变形的影响。

    Printing head in a dot-line printer
    12.
    发明授权
    Printing head in a dot-line printer 失效
    打印头在点线打印机

    公开(公告)号:US5237918A

    公开(公告)日:1993-08-24

    申请号:US855482

    申请日:1992-03-23

    IPC分类号: B41J2/245

    CPC分类号: B41J2/245

    摘要: In a dot-line printer, a hammer bank carrying a plurality of dot printing hammers reciprocally moved along a printingline. Each of the printing hammers is made up of a leaf spring, one end of which is fixedly secured to the hammer bank and to another end of which a printing pin is attached. According to the invention, the plurality of dot printing hammers are separated into an odd-number group and an even-number group, in which the printing hammers in each of the odd-number and even-number groups are further separated into a predetermined number of sub-groups. The printing hammers in the odd-number group are arranged in the upper side of the printing line so that the printing pins extend downwardly and the printing hammers in the even-number group are arranged in the lower side of the printing line so that the printing pins extend upwardly. The printing pins in each of the sub groups of the odd-number group are positioned along a straight line inclined by a predetermined angle with respect to the printing line and the printing pins of the printing hammers in each of the sub groups of the even-number group are positioned along another straight line parallel to the aforementioned straight line. In order to facilitate fabrication of the printing hammers, the printing hammers in each of the sub groups are formed integrally to be in a comb-like shape.

    摘要翻译: 在点阵式打印机中,携带多个点印刷锤的锤片组沿印刷线往复运动。 每个打印锤由片簧组成,其一端固定地固定在锤组上,另一端连接着一个印刷销。 根据本发明,将多个点打印锤分离成奇数组和偶数组,其中奇数组和偶数组中的每一个中的打印锤进一步分成预定数量 的子组。 奇数组中的印刷锤布置在印刷线的上侧,使得印刷销向下延伸,并且偶数组中的印刷锤布置在印刷线的下侧,使得印刷 针脚向上延伸。 奇数组的每个子组中的印刷引脚沿着相对于印刷线倾斜预定角度的直线定位,并且印刷锤的印刷销在偶数组的每个子组中, 数字组沿着与上述直线平行的另一条直线定位。 为了便于打印锤的制造,每个子组中的打印锤整体形成为梳状。

    Dot line printer with paper feed time controlling capability
    13.
    发明授权
    Dot line printer with paper feed time controlling capability 失效
    点纸打印机,具有送纸时间控制功能

    公开(公告)号:US5193920A

    公开(公告)日:1993-03-16

    申请号:US562534

    申请日:1990-08-03

    CPC分类号: B41J11/42 B41J25/304

    摘要: A dot line printer with a paper feed time controlling capability includes a hammer bank accommodating a plurality of print hammers, a shuttle mechanism for shuttling the hammer bank back and forth along a print line, and a sheet feeding mechanism for feeding a sheet of paper in a direction perpendicular to the direction in which the hammer bank shuttles. When a first predetermined amount of a line space feeding is to be carried out after completion of one line printing, a hammer bank reversing time is prolonged. When more than the first predetermined amount of the line space feeding but less than a second predetermined amount of line space feeding is to be carried out, it is carried out during an extended period of time including both the hammer bank reversing time and the subsequent hammer bank scanning time without prolonging the hammer bank reversing time. Further, when the amount of the interline space feed is more than the second predetermined amount, it is taken place during a prolonged hammer bank reversing time and also the subsequent hammer bank scanning time.

    摘要翻译: 具有送纸时间控制能力的点阵式打印机包括容纳多个打印锤的锤片组,用于沿着打印线往复运动锤片组的梭机构,以及用于将纸张进给的片材进给机构 一个垂直于锤子横穿方向的方向。 当在完成一行打印之后要执行第一预定量的行空格进给时,延长锤组反转时间。 当进行多于第一预定量的线空间供给但小于第二预定量的线空间进给时,其将在包括锤组反转时间和后续锤的两个延长的时间段内进行 银行扫描时间不会延长锤组反转时间。 此外,当行间空间进给量大于第二预定量时,在延长的锤组反转时间期间以及随后的锤排扫描时间期间发生。

    Dot line printer having ink ribbon guides
    14.
    发明授权
    Dot line printer having ink ribbon guides 失效
    具有墨带导轨的点阵式打印机

    公开(公告)号:US5122003A

    公开(公告)日:1992-06-16

    申请号:US640325

    申请日:1991-01-11

    摘要: A dot line printer having ink ribbon guides for stabilizing running performance of an ink ribbon. A dot line printer includes a hammer bank, a shuttle mechanism, a platen and ink ribbon guides. The hammer bank has print hammers for forming a plurality of dot impressions. The shuttle mechanism has one side positioned adjacent to one end of the hammer bank for reciprocally moving the hammer bank. The platen is adapted for bearing dot impression force, and a part of the ink ribbon is positioned at an ink ribbon path extending along the platen. The ribbon guides have a first guide positioned adjacent to another end of the hammer bank, and a second guide positioned adjacent to another side of the shuttle mechanism. The ink ribbon guides guide travel of the ink ribbon at the ink ribbon path. The ribbon guides further include a third ink ribbon guide positioned between the hammer bank and the shuttle mechanism for further guiding travel of the ink ribbon at the ink ribbon path.

    摘要翻译: 一种具有用于稳定墨带的运行性能的墨带引导件的点阵式打印机。 点阵式打印机包括锤组,梭机构,压板和墨带引导件。 锤子库具有用于形成多个点印象的打印锤。 穿梭机构具有邻近锤组的一端定位的一侧,用于往复移动锤组。 压板适于承受点压力,并且墨带的一部分位于沿着压板延伸的墨带路径。 带状引导件具有邻近锤块的另一端定位的第一引导件,以及邻近穿梭机构的另一侧定位的第二引导件。 墨带引导件引导墨带在色带路径处的行进。 带状引导件还包括位于锤块和梭机构之间的第三墨带引导件,用于进一步引导墨带在色带路径处的行进。

    Apparatus for controlling reversing duration of hammer bank in shuttle
printer
    15.
    发明授权
    Apparatus for controlling reversing duration of hammer bank in shuttle printer 失效
    用于控制往复打印机中锤组的反转持续时间的装置

    公开(公告)号:US5059047A

    公开(公告)日:1991-10-22

    申请号:US478854

    申请日:1990-02-12

    CPC分类号: B41J19/202

    摘要: A shuttle printer carries out printing on a printing paper when a hammer bank shuttles back and fourth. At the beginning of the hammer bank reversal at the right or left end in the hammer bank shuttling path, a braking force is exerted to a shuttle motor which drives the hammer bank and an acceleration force is exerted to the shuttle motor immediately after the hammer bank turns around. In order to set a reversing duration of the hammer bank at constant, the braking force and the acceleration force exerting durations are prolonged from a predetermined minimum to a value when the hammer bank reversing duration is shortened to an extent as desired, whereby a printing paper can be fed a predetermined amount within the hammer bank reversing duration as desired.

    摘要翻译: 梭子打印机在打印纸上打印时,在打印纸打印时,打印纸打印后再打印。 锤锤组在锤库行驶路径右侧或左端反转的开始处,对驱动锤组的梭电机施加制动力,并且在锤锤组之后立即向往复电动机施加加速力 转过(身)来。 为了将锤组的反转持续时间设定为恒定,当锤组反转持续时间缩短到期望的程度时,制动力和施加持续时间的加速力从预定最小值延长到值,由此打印纸 可以根据需要在锤片组反转持续时间内进给预定量。

    Paper feed control for a dot-line printer
    16.
    发明授权
    Paper feed control for a dot-line printer 失效
    点阵式打印机的送纸控制

    公开(公告)号:US4889052A

    公开(公告)日:1989-12-26

    申请号:US124121

    申请日:1987-11-23

    IPC分类号: B41J2/515 B41J19/76 B41J25/00

    CPC分类号: B41J25/006

    摘要: A dot-line printer has a hammer bank carrying a plurality of printing hammers arranged in groups, each group having a predetermined number of printing hammers displaced from one another by predetermined numbers of dot-lines in the direction of paper feed. A shuttle mechanism causes the hammer bank to undergo reciprocating shuttle movements with a reversing period between successive shuttle movements. A character line, covering a predetermined number of dot-lines, is printed over a plurality of shuttle movements, a paper feed mechanism causing the paper to move a predetermined number of dot-lines in the reversing period between shuttle movements. A number of blank dot-lines separate a printed character line from the beginning of the first dot-line of the next character line to be printed. A control mechanism sets the reversing period between successive shuttle movements to be longer than the paper feed time to move the paper to the first dot-line to be printed after the preceding character line has been printed and causes the paper feed to the first dot-line of the next character line to be printed to occur entirely in the reversing period.

    摘要翻译: 点阵式打印机具有携带多个按组排列的多个打印锤的锤组,每组具有预定数量的打印锤在进给方向上彼此相互移位预定数量的点划线。 穿梭机构使得锤组在连续往复运动之间具有反转时段的往复运动。 覆盖预定数量的点划线的字符线被印刷在多个往复运动上,供纸机构使得纸在往复运动之间的反转期间内移动预定数量的点划线。 多个空白点划线将打印的字符线与要打印的下一个字符行的第一个点划线的开头分开。 控制机构将连续的往复运动之间的反转时间设定为比进纸时间长,以便在打印前一个字符行之后将纸张移动到要打印的第一点划线,并且使供纸到第一点 - 要打印的下一个字符行的行在完全在反转期间发生。