公开(公告)号：US3970183A

公开(公告)日：1976-07-20

申请号：US476581

申请日：1974-06-05

Applicant: Prentice Robinson ,  Paul S. Ramsden, Jr.

Inventor： Prentice Robinson ,  Paul S. Ramsden, Jr.

IPC: G02B26/10 ,  B41J2/24 ,  B41J2/51 ,  B41J19/14 ,  B41J19/18 ,  G06K15/08 ,  G06K15/10 ,  H04L17/16 ,  H04N1/04 ,  B41J3/04

CPC classification number: B41J19/142 ,  B41J2/24

Abstract: An impact printer of the dot matrix type capable of printing in either the forward or reverse direction. Means are provided for determining the position of the print head at any given instant. Upon completion of a line of print the print head is abruptly halted. The next line of characters is examined to determine the end points of its character field. Comparisons are made to determine whether the print head lies within or beyond the end points. In cases where the print head lies beyond the end points of the character field, the printing occurs by moving the head in a direction toward the closest end point and then printing. If the print head occupies the location between the end points the position of the head is loaded into a pair of counters which are simultaneously counted up and down respectively. The outputs of the counters are continuously compared against the values representing the end point locations whereupon the first favorable comparison determines the shortest distance of print head travel for starting printing. High speed electronic circuitry is provided for storing data representing the next line to be printed in both forward and reverse formats whereupon the decision as to the direction in which data is printed automatically controls the appropriate storage medium.Novel video detection means is provided both for determining the direction of head movement at any instant and for controlling the printing positions. The use of delayed strobes derived directly from the video control allows printing to start immediately from the rest position, and provides accurate registration of delayed strobes relative to strobe pulses regardless of the velocity of the carriage.The printer has the ability of printing expanded characters and includes electronic circuitry to prevent data in the expanded character format from being lost in cases where the inputted data representing the expanded character format exceeds the print line capacity of the printer whereby any overflow will automatically be printed on the second succeeding line of print.

Abstract translation: 能够在正向或反向打印的点阵型冲击打印机。 提供用于在任何给定时刻确定打印头的位置的装置。 打印头完成后，打印头突然停止。 检查下一行字符以确定其字符字段的终点。 进行比较以确定打印头是否位于或超出终点。 在打印头位于字符区域的终点之外的情况下，通过朝着最接近的端点的方向移动头部然后打印来进行打印。 如果打印头占据端点之间的位置，则头部的位置被加载到一对计数器中，这些计数器分别同时向上和向下计数。 将计数器的输出与表示终点位置的值连续进行比较，因此第一有利比较确定打印头行程的最短距离以开始打印。 提供高速电子电路用于以正向和反向格式存储表示要打印的下一行的数据，因此关于打印数据的方向的决定自动控制适当的存储介质。

公开(公告)号：US4277189A

公开(公告)日：1981-07-07

申请号：US28318

申请日：1979-04-09

Applicant: Robert Howard ,  Prentice Robinson ,  Alexander F. Vitale

Inventor： Robert Howard ,  Prentice Robinson ,  Alexander F. Vitale

IPC: B41J19/14 ,  B41J19/00

CPC classification number: B41J19/142 ,  Y10T74/18152

Abstract: A drive assembly for printer carriages and the like comprised of a closed looped metallic tape entrained about a drive and a driven pulley and being moved at a substantially constant rate. The carriage assembly reciprocally slides along guide rods for linear movement in a forward and reverse direction and is provided with guideways for enabling substantially unimpeded movement of the upper and lower runs respectively of said closed looped tape. Solenoid operated jam cleat assemblies are respectively engageable with the upper and lower runs of said closed looped tape in a mutually exclusive fashion. Connecting rod means is provided to assure engagement of only one of the jam cleats with the associated run of the closed loop tape to prevent stopping or jamming of the tape and to assist in the release of the deactivated jam cleat. By selective energization of the pair of solenoid assemblies, the carriage assembly may be moved in either the forward or reverse direction at any given instant of time.A dot matrix print head may be mounted upon the reciprocating carriage assembly which by appropriate utilization of printer electronics, may be utilized for either unidirectional or bidirectional printer systems.

Abstract translation: 用于打印机支架等的驱动组件包括夹在驱动器和从动皮带轮上并以基本恒定速率移动的闭环金属带。 托架组件沿着导向杆往复滑动，用于沿正向和反向的线性运动，并且设置有导轨，用于分别实现所述闭环带的上下运动的基本上不受阻碍的运动。 电磁操作的阻塞夹板组件可以以相互排斥的方式与所述闭环带的上下运动相接合。 提供连杆装置以确保只有一个卡塞夹板与相关联的闭环带的运行相接合，以防止带的停止或堵塞并且有助于释放失效的堵塞夹板。 通过选择性地激励一对螺线管组件，托架组件可以在任何给定的时刻沿正向或反向的方向移动。 点阵打印头可以安装在往复滑架组件上，通过适当地利用打印机电子装置，可以将其用于单向或双向打印机系统。

公开(公告)号：US4187511A

公开(公告)日：1980-02-05

申请号：US890620

申请日：1978-03-20

Applicant: Prentice Robinson

Inventor： Prentice Robinson

IPC: B41J2/175 ,  G01D15/18

CPC classification number: B41J2/1752 ,  B41J2/17566 ,  G01D15/18

Abstract: An inkjet printer is provided with a movable carriage upon which is mounted an inkjet print head and a small reservoir having a fluid capacity capable of printing a predetermined number of characters, and which is sufficiently light in weight as to minimize the mass mounted upon the carriage. Sensing means detect the low level of ink for causing the carriage to be moved to the end of one of the printer margins at which is located a stationary large capacity ink reservoir having an outlet nozzle adapted to be inserted into an opening in the small capacity reservoir for filling the reservoir either under control of a pump or by gravity feed, whereupon the printer resumes the printing operation.

Abstract translation: 喷墨打印机设置有可移动托架，在该可移动托架上安装有喷墨打印头和具有能够打印预定数量字符的流体容量的小储存器，并且其具有足够的重量以使安装在托架上的质量最小化 。 感测装置检测低水平的墨水，以使托架移动到位于具有适于插入小容量容器中的开口中的出口喷嘴的固定大容量墨水储存器的一个打印机边缘的一端的端部 用于在泵的控制下或通过重力进料填充储存器，于是打印机恢复打印操作。