Apparatus and method for automatically determining defective thermal printhead elements
    2.
    发明公开
    Apparatus and method for automatically determining defective thermal printhead elements 失效
    Gerätund Methode zur automatischen Bestimmung defekter Heizelemente in einem Druckkopf。

    公开(公告)号:EP0174751A1

    公开(公告)日:1986-03-19

    申请号:EP85305794.1

    申请日:1985-08-14

    IPC分类号: B41J3/20

    CPC分类号: B41J2/35 B41J2/365 B41J7/96

    摘要: In a thermal printer, data in the form of character data separated by gaps is supplied over a data line (38) to a shift register (15). the latched outputs of which cause operation of thermal elements (R 1 -R N ) in a thermal printhead (11 During a test mode of operation, test data is supplied to operate the thermal elements (R 1 -R N ) in succession, a sensing resistor (R s ) providing corresponding test signals which are digitized by an A/D converter (39). Each digitized test signal is compared with an associated initial, stored, digitized test signal, and if the current value deviates by more than a predetermined amount from the initial value, a failure signal is provided. A processor (19) is thereupon effective to cause the subsequent character data to be shifted such that the defective element is aligned with a location which is not used for printing, such as an intercharacter gap. In a modification, the test signals for all the thermal elements (R 1 -R N ) are compared with a common fixed, predetermined reference level.

    摘要翻译: 在热敏打印机中,通过间隙分离的字符数据形式的数据通过数据线(38)提供给移位寄存器(15),其锁存输出使得热元件(R1-RN)在热 打印头(11)。 在测试操作模式期间,提供测试数据以连续地操作热元件(R1-RN),提供由AD转换器(39)数字化的相应测试信号的感测电阻器(RS)。 将每个数字化的测试信号与相关联的初始,存储的数字化测试信号进行比较,并且如果当前值从初始值偏移超过预定量,则提供故障信号。 因此,处理器(19)有效地使随后的字符数据被移位,使得缺陷元件与不用于打印的位置(诸如间隙间隙)对齐。 在修改中,将所有热元件(R1-RN)的测试信号与公共固定的预定参考电平进行比较。

    DOT MATRIX PRINTER.
    4.
    发明公开
    DOT MATRIX PRINTER. 失效
    针式打印机。

    公开(公告)号:EP0060852A4

    公开(公告)日:1983-12-19

    申请号:EP81902556

    申请日:1981-09-08

    申请人: NCR CORP

    CPC分类号: B41J7/96 B41J29/393 G06K5/02

    摘要: A dot matrix printer in which, for the purpose of supervising the quality of the printing of dot matrix characters, an optical sensor (32) is provided for each dot producing element (11) of a print head (5). Each optical sensor (32) includes two glass fibers (34, 36) to carry light from a light-emitting diode to the surface of a record medium and to carry the reflected light to a photodiode. Each printed dot is detected and the sensor output is compared with a delayed or stored print signal which is applied to the drivers for the dot producing printing elements (11). The print head (5) may either be a wire matrix or an ink jet print head.

    Printwheel homing apparatus
    5.
    发明公开
    Printwheel homing apparatus 失效
    Printwheel导航装置

    公开(公告)号:EP0030626A3

    公开(公告)日:1983-03-16

    申请号:EP80107024

    申请日:1980-11-14

    IPC分类号: B41J07/96 B41J19/20 B41J01/30

    CPC分类号: B41J1/24 B41J7/96 B41J19/202

    摘要: In a printwheel type of printer using a selection stepper motor (20) for driving the printwheel (18), means are provided for performing printwheel homing operation upon occurrence of predetermined events. Such an event, is detected and reported to microprocessor means (36) which drive motion means (14) for bringing the printer carriage assembly (8) to a first extreme left position where a stop element (58) fixed relative to the printwheel rotation is made to enter the path of another stop element (61) attached to rotate with the printwheel. Subsequently, the selection stepper motor (20) driving the printwheel is driven for a number of steps at least equal to one motor revolution to ensure reaching inhibition of the printwheel rotation by bringing the rotating stop element (58) into contact with the relatively fixed stop element (61 The carriage (8) is then moved back to the left margin writing position where the relatively fixed stop element is withdrawn from the path of the other stop element and the angular printwheel home position is noted and stored by microprocessor means (40).

    摘要翻译: 在使用选择步进电机(20)来驱动打印头(18)的打印机类型的打印机中,提供了用于在发生预定事件时执行打印导向操作的装置。 检测到这种事件并将其报告给驱动运动装置(14)的微处理器装置(36),用于将打印机托架组件(8)带到第一极限左侧位置,在第一极端左侧位置处,相对于印刷旋转固定的止动元件 使其进入另一停止元件(61)的路径,该另一个停止元件(61)被附着以随着打印头一起旋转。 随后,驱动印刷装置的选择步进电机(20)被驱动至少等于一个电机旋转的多个步骤,以通过使旋转停止元件(58)与相对固定的止动件接触来确保达到对印刷旋转的禁止 元件(61)然后滑架(8)移回到左边缘写入位置,在该位置,相对固定的止动元件从另一个止动元件的路径中退出,并且角度原始位置被微处理器装置(40)记录并存储, 。

    Initializing apparatus for daisy wheel printer
    6.
    发明公开
    Initializing apparatus for daisy wheel printer 失效
    菊花轮打印机的初始化设备

    公开(公告)号:EP0139937A1

    公开(公告)日:1985-05-08

    申请号:EP84109526.8

    申请日:1984-08-10

    IPC分类号: B41J1/30 B41J7/96

    CPC分类号: B41J1/24 B41J7/96

    摘要: An LED/photodetector structure (54, 34) is disclosed positioned to cooperate with a daisy wheel print element (10) of a daisy wheel printer and a light interrupter (40) such that under microprocessor control, a stepping motor will rotate and home the daisy wheel print element (10), sense the escapement pitch corresponding to that element (10), sense the font weight or impact force level associated with that print element (10) and then cause the carrier to be translated to the left frame, thereby engaging the light beam interrupter (40) with the left frame and forcing it into the light beam indicating the presence or the carrier at a known spacial position for homing of the carrier position.
    The print element has apertures (20, 24, 26, 28, 30) formed in the hub (22) thereof which are all specialty positioned within one semicircular portion of the print element hub (22) and which denote the home position of the print element (10) -and coded values representing escapement pitch and impact level for that print element

    摘要翻译: 公开了一种LED /光电探测器结构(54,34),其被定位成与菊花轮打印机和遮断器(40)的菊花轮打印元件(10)配合,使得在微处理器控制下,步进电机将旋转并将 检测与该元件(10)相对应的擒纵节距,感测与该打印元件(10)相关联的字体重量或冲击力水平,然后使载体平移到左框架,由此 将光束遮断器(40)与左框架接合,并迫使其进入指示存在的光束或在已知的空间位置处的载体,以使载体位置归位。 印刷元件具有形成在其毂(22)中的孔(20,24,26,28,30),这些孔全部特殊定位在印刷元件毂(22)的一个半圆形部分内,并且表示印刷品的原始位置 元素(10)以及表示该打印元素的擒纵节距和影响程度的编码值

    Verfahren zum automatischen Ermitteln und Einregeln der Druckqualität eines Druckers
    7.
    发明公开
    Verfahren zum automatischen Ermitteln und Einregeln der Druckqualität eines Druckers 失效
    一种用于自动检测和调节的打印机的打印质量的方法。

    公开(公告)号:EP0115546A1

    公开(公告)日:1984-08-15

    申请号:EP83100692.9

    申请日:1983-01-26

    IPC分类号: B41J7/96 B41F33/00

    CPC分类号: B41J7/96 B41F33/0036

    摘要: Die Erfindung betrifft ein rechnergesteuertes Verfahren zum automatischen Ermitteln des jeweiligen Wertes der Druckqualität eines Druckers und zum Regeln dieser Druckqualität in Richtung auf einen optimalen Wert DQ opt unter Verwendung sowohl des empirisch ermittelten durchschnittlichen optimalen Bildkontrastsignals ( PCS ) als auch der Standardabweichung σ von PCS, das sich aus der Beziehung mit R B = Reflexion des Hintergrundes und R i = Reflexion eines Bildelementes i oder Punktes i (PEL) ergibt, das sich dadurch auszeichnet, daß durch opto-elektronische Abtastung aller Bildelemente i eines Zeichens längs der Skelettlinie und des Hintergrundes der tatsächliche Wert des Bildkontrastsignals aus den Einzelwerten für alle n Bildelemente gebildet und aus diesen n Abtastwerten ein Faktor abgeleitet wird und ein ein Druckqualitätsfaktor und davon 1 n x 2 gebildet wird, daß anschließend daraus der tatsächliche Wert der Druckqualität DQ = a 0 + a 1 1n x 2 ermittelt wird, und daß durch iterativen automatischen Vergleich zwischen dem abgespeicherten optimalen Wert DQ opt der Druckqualität und dem ermittelten Wert der Druckqualität in einer geschlossenen Regelschleife die Regelgrößen zur Nachregelung der verschiedenen Parameter des Druckers abgeleitet und benutzt werden.

    摘要翻译: 用于自动地确定的采矿计算机控制方法的打印机的打印质量和用于朝向在使用凭经验确定开采平均最佳图像对比度信号(PCS),以及PCS的标准偏差西格玛最佳值DQopt调整所述打印质量respectivement值 从方程结果其中RB =背景和Ri的反射=图像元素i或点i(PEL)的反射。 该方法由所有图像元素我沿着骨架线和背景字符的的光电扫描DASS,图像对比度信号的实际值从单独的值形成所有n的图像元素,并且从 论文n个扫描值,因子导出和打印品质因数并从它1N X2形成,DASS随后的打印质量DQ的实际值= A0 + A1 1N X 2是确定性从确实值开采, 并通过打印质量的所存储的最佳值DQopt和开采在闭合控制环中的打印质量的确定性的值之间迭代自动比较DASS,重新调整打印机的不同参数的控制因素导出和使用。

    DOT MATRIX PRINTER
    8.
    发明公开
    DOT MATRIX PRINTER 失效
    针式打印机。

    公开(公告)号:EP0060852A1

    公开(公告)日:1982-09-29

    申请号:EP81902556.0

    申请日:1981-09-08

    申请人: NCR CORPORATION

    IPC分类号: B41J2 B41J7 B41J29 G06K5

    CPC分类号: B41J7/96 B41J29/393 G06K5/02

    摘要: Imprimante par points dans laquelle, dans le but de controler la qualite de l'impression des caracteres, un detecteur optique (32) est prevu pour chaque element (11) produisant un point dans une tete d'impression (5). Chaque detecteur optique (32) comprend deux fibres de verre (34, 36) servant a conduire la lumiere depuis une diode electroluminescente jusqu'a la surface d'un support d'enregistrement et a conduire la lumiere reflechie jusqu'a une photodiode. Chaque point imprime est detecte et la sortie du detecteur est confrontee avec un signal d'impression retarde ou stocke qui est applique au dispositif d'actionnement des elements (11) d'impression produisant les points. La tete d'impression (5) peut etre soit une matrice a aiguilles soit une tete imprimante a jet d'encre.

    Automatic function control for an electronic typewriter
    9.
    发明公开
    Automatic function control for an electronic typewriter 失效
    电子型号的自动功能控制

    公开(公告)号:EP0308633A3

    公开(公告)日:1989-12-27

    申请号:EP88112552.0

    申请日:1988-08-02

    IPC分类号: B41J7/96

    CPC分类号: B41J7/96

    摘要: A function for an electronic typewriter (10) is described. The function assures that when an operator moves the print mechanism back into a region where text has been typed either using a different pitch print element (15) or using a different language keyboard (14), the operation of the typewriter (10) is not enabled until the operator is notified that there exists a condition where a mismatch exists. In the case of the pitch mismatch, the typewriter (10) is only enabled after the operator takes steps to change the print element (15) or position the print point to a position where the mismatch no longer exist. In the situation where a keyboard (14) mismatch exists, the operator must take some step to restart the typewriter operation. This may be the changing of the keyboard (14) to correspond to the keyboard used to key the text in that region, and the changing of the print element (15). The changing of the keyboard (14) may be the only change required, since some languages share print elements.

    Automatic function control for an electronic typewriter
    10.
    发明公开
    Automatic function control for an electronic typewriter 失效
    Automatische Funktionskontrollefüreine elektronische Schreibmaschine。

    公开(公告)号:EP0308633A2

    公开(公告)日:1989-03-29

    申请号:EP88112552.0

    申请日:1988-08-02

    IPC分类号: B41J7/96

    CPC分类号: B41J7/96

    摘要: A function for an electronic typewriter (10) is described. The function assures that when an operator moves the print mechanism back into a region where text has been typed either using a different pitch print element (15) or using a different language keyboard (14), the operation of the typewriter (10) is not enabled until the operator is notified that there exists a condition where a mismatch exists. In the case of the pitch mismatch, the typewriter (10) is only enabled after the operator takes steps to change the print element (15) or position the print point to a position where the mismatch no longer exist.
    In the situation where a keyboard (14) mismatch exists, the operator must take some step to restart the typewriter operation. This may be the changing of the keyboard (14) to correspond to the keyboard used to key the text in that region, and the changing of the print element (15). The changing of the keyboard (14) may be the only change required, since some languages share print elements.

    摘要翻译: 描述了电子打字机(10)的功能。 该功能确保当操作者将打印机构移回到已经使用不同的间距打印元件(15)或使用不同的语言键盘(14)键入文本的区域时,打字机(10)的操作不是 启用,直到通知操作员存在不匹配存在的情况。 在音高不匹配的情况下,打字机(10)仅在操作者采取步骤改变打印元件(15)或将打印点定位到不再存在的位置之后才被启用。 在存在键盘(14)不匹配的情况下,操作者必须采取一些步骤才能重新启动打字机操作。 这可以是键盘(14)的改变,以对应于用于键入该区域中的文本的键盘以及打印元素(15)的改变。 由于某些语言共享打印元素,所以改变键盘(14)可能是唯一的变化。