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1. 发明授权

US5871287A Extended ribbon life for improved bar code printing 失效
标题翻译：延长色带寿命，改善条形码打印
公开(公告)号：US5871287A
公开(公告)日：1999-02-16
申请号：US542372
申请日：1995-10-12
申请人： Robert Edward Boyanowski , Michael Robert Brechko , Ho Chong Lee , Jack Louis Zable
发明人： Robert Edward Boyanowski , Michael Robert Brechko , Ho Chong Lee , Jack Louis Zable
IPC分类号： B41J2/30
CPC分类号： B41J2/30
摘要： Disclosed is an improved method, in an impact matrix printer, for extending print ribbon life when used in printing bar codes and for improving the quality of bar codes printed by the ribbon, the printer including a dot matrix print head having a plurality of print pins and print hammers. The printer includes a medium to receive printed indicia thereon, and a print ribbon intermediate the print head and the medium, and means for effecting relative movement between the print head, the medium and the print ribbon so as to position opposite the print head different portions of the medium from time to time when the printer is operational and printing and to position different portions of the print ribbon intermediate the print head and the medium at preselected times when the printer is operational and printing. As is shown, the method includes the steps of determining when, under normal operating conditions, the print ribbon should be replaced because of an increase in errors in reading the bar code printed by the printer, for example, the color density of the narrower width lines are too light. Two ways of increasing the density of selected bar code lines of print are disclosed: (1) increasing the number of PELS (Picture Elements) per inch of print in at least selected printed lines of bar code, or (2) impacting the same print lines a greater number of times to increase the color density of at least selected PELS. In this manner, the useful life of the printer ribbon for printing bar codes and the quality of bar codes produced by the ribbon is increased without incurring printer throughput loss.
摘要翻译：公开了一种改进的方法，在冲击矩阵打印机中，当用于打印条形码时用于延长打印色带使用寿命，并且用于提高由色带打印的条形码的质量，打印机包括具有多个打印头的点阵打印头并打印锤子。打印机包括用于在其上接收打印标记的介质，以及打印头和介质之间的打印色带，以及用于在打印头，介质和打印色带之间进行相对运动的装置，以便与打印头不同部分当打印机运行和打印时，打印机可操作和打印时不时地将打印色带的不同部分定位在打印头和介质的不同部分的预定时间。如图所示，该方法包括以下步骤：在正常操作条件下，由于读取打印机打印的条形码的错误的增加，确定何时更换打印色带，例如较窄宽度的色彩浓度线条太亮了公开了增加所选打印条形码行密度的两种方式：（1）在至少选定的条形码行中增加每英寸打印数量的PELS（图片要素），或者（2）影响相同的打印排列更多的次数以增加至少所选PELS的颜色密度。以这种方式，增加了用于打印条形码的打印机色带的使用寿命以及由色带产生的条形码的质量，而不会导致打印机吞吐量损失。

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