公开(公告)号：US5085532A

公开(公告)日：1992-02-04

申请号：US480221

申请日：1990-02-15

申请人： Ronald V. Surya ,  Albert M. Kritz

发明人： Ronald V. Surya ,  Albert M. Kritz

IPC分类号： B41J3/54 ,  B41J17/22 ,  B41J33/22

CPC分类号： B41J33/22 ,  B41J17/22 ,  B41J3/54 ,  Y10T403/7022 ,  Y10T403/7061

摘要： In medium to high volume printers using more than one print head, multiple documents may be printed side by side in one pass. Multiple rolls of ribbon are utilized on the ribbon mandril to accommodate the documents. The ribbon is kept taut across its print head by the feed system controller. When the outside diameters of the two rolls of ribbon vary, the system keeps one ribbon taut and the other tends to go slack at the print head. A split sleeve mandril with a differential mechanism connecting the two sleeves of the mandril assures that both ribbons are maintained taut. The preferred differential mechanism may be a planetary gear arrangement, or a thrust bearing arrangement. A unique ribbon roll holding mechanism, to hold the ribbon roll at the selected place on the mandril is also provided.

摘要翻译： 在使用多个打印头的中等到高容量打印机中，多个文档可以一次并排打印。 在卷带曼陀罗上使用多卷丝带来容纳文件。 丝带通过进给系统控制器保持紧贴在其打印头上。 当两个卷筒的外径变化时，系统会保持一个绷紧的丝带，另一个在打印头上趋于松弛。 具有连接两个心轴套的差速机构的开口套筒心轴确保两条丝都保持紧固。 优选的差速机构可以是行星齿轮装置或推力轴承装置。 还提供了一种独特的卷带保持机构，用于将色带卷保持在心轴上的选定位置。