公开(公告)号：US5608443A

公开(公告)日：1997-03-04

申请号：US333392

申请日：1994-11-02

申请人： Matthew R. Palmer ,  Ian Thompson-Bell

发明人： Matthew R. Palmer ,  Ian Thompson-Bell

IPC分类号： B41J11/02 ,  B41J5/30 ,  B41J11/44 ,  B41J29/48 ,  B41J33/34 ,  B41J35/36 ,  B41K3/00 ,  G09F3/00 ,  B41J11/00 ,  B41J2/32

CPC分类号： B41J11/44 ,  B41J33/34 ,  B41J35/36

摘要： A label printing apparatus receives a cassette holding printing tape on which an image is to be printed. The apparatus also has a printing mechanism which includes a thermal printhead having a group of printing elements to which pixel data defining the image to be printed is passed sequentially on a group-by-group basis. The groups are printed adjacent one another in the direction of movement of the printing tape. A drive system is provided for driving the printing tape through the printing mechanism end includes a dc motor which is provided with a shaft encoder for monitoring the speed of rotation of the motor. Sequential printing of the groups of pixel data is controlled in dependence on the monitors speed of rotation of the motor. There is also described a label printing apparatus which uses monitoring of the speed of rotation of the motor to detect an end of tape condition.

摘要翻译： 标签打印设备接收要在其上打印图像的盒式磁带保持打印带。 该设备还具有打印机构，该打印机构包括具有一组打印元件的热打印头，定义要打印的图像的像素数据将逐个逐个地依次通过。 这些组在打印带的移动方向上彼此相邻地打印。 提供驱动系统用于通过打印机构端驱动打印带，其包括直流电动机，该直流电动机设置有用于监测电动机的转速的轴编码器。 根据监视器的转速来控制像素数据组的连续打印。 还描述了一种标签打印设备，其使用电动机的旋转速度的监视来检测磁带条件的结束。