公开(公告)号：US4334471A

公开(公告)日：1982-06-15

申请号：US179237

申请日：1980-08-18

申请人： Mark S. Noyes ,  Andrew G. Perra, Jr.

发明人： Mark S. Noyes ,  Andrew G. Perra, Jr.

IPC分类号： B41F13/12 ,  B41F13/02

CPC分类号： B41F13/12

摘要： A printing system is disclosed which permits the printing of indicia on a continuously moving web at a fixed position offset from previously printed, evenly spaced web marks. The fixed position of the printed indicia relative to the web marks is independent of the velocity of the web. A web mark sensor, which may be part of the system to which the present invention is retrofitted, detects the passage of each previously printed web mark past a detection position. A registration circuit controls the timing of the printing of the indicia on the moving web and provides START signals for a servomotor-driven rotary print head which includes one or more peripherally mounted printing elements. A tachometer is mechanically coupled to a web transport mechanism to produce an output voltage which provides the velocity command for the servomotor drive of the rotary print head to match the rotational velocity of the print head to the linear velocity of the web during the printing interval. A STOP signal is produced by the registration circuit in response to the rotation of a vane, which rotates in conjunction with the print head, past a vane sensor to signal the rotation of a printing element to a rest position. A registration adjustment circuit permits the position at which the indicia are printed on the web to be varied.

摘要翻译： 公开了一种打印系统，其允许在与先前打印的均匀间隔的网标记偏移的固定位置的连续移动的卷筒纸上打印标记。 打印标记相对于网标记的固定位置与纸幅的速度无关。 可以是本发明改进的系统的一部分的网标传感器检测每个先前打印的卷标通过检测位置的通过。 注册电路控制打印在移动幅面上的标记的定时，并为包括一个或多个外围安装的打印元件的伺服电动机驱动的旋转打印头提供START信号。 转速计机械地联接到幅材传送机构以产生输出电压，其提供用于旋转打印头的伺服电动机驱动的速度命令，以在打印间隔期间将打印头的旋转速度与卷材的线速度相匹配。 响应于与打印头一起旋转的叶片的旋转，由对准电路产生停止信号，经过叶片传感器以将打印元件的旋转信号发送到静止位置。 登记调整电路允许在纸幅上打印标记的位置被改变。

公开(公告)号：US5489925A

公开(公告)日：1996-02-06

申请号：US57091

申请日：1993-05-04

申请人： Jeffrey B. Brooks ,  Mark S. Noyes ,  Frank W. Martines ,  Charles W. Spehrley, Jr. ,  Steven H. Barss ,  Edward R. Moynihan ,  Nathan P. Hine ,  David W. Gailus

发明人： Jeffrey B. Brooks ,  Mark S. Noyes ,  Frank W. Martines ,  Charles W. Spehrley, Jr. ,  Steven H. Barss ,  Edward R. Moynihan ,  Nathan P. Hine ,  David W. Gailus

IPC分类号： B41J2/015 ,  B41J2/175 ,  B41J2/19 ,  B41J2/195 ,  B41J25/304 ,  G01D15/16

CPC分类号： B41J25/304 ,  B41J2/175 ,  B41J2/17593 ,  B41J2/19 ,  B41J2/195

摘要： In the ink jet printing system described in the specification, a hot melt ink jet printhead having two ink reservoirs is coupled through an ink supply line to a remote hot melt ink supply and a temperature controller is arranged to control the temperatures of the ink in the remote ink supply, the supply line, the ink reservoirs in the printhead and passages leading from the reservoirs to the ink jet orifices at selected temperature levels to inhibit high-temperature degradation of the ink while permitting the ink to be jetted at the desired jetting temperature. In addition, a pressure control system controls the pressure of the ink in the printhead at one or more selected levels to permit the printhead to be used at different orientations and to permit purging of air bubbles and contaminants from the orifice passageways and to supply a relatively high vacuum to a deaerator in the printhead to extract dissolved air from the ink. A check valve in the ink supply line permits the printhead to be positioned at different elevations with respect to the remote ink supply without causing any undesired flow of ink between the reservoir and the printhead.