| 摘要 |
<p>PURPOSE:To prevent the misconception of a printed pattern with a mark, by deciding to be mark detecting when a plurality of detectors act along with a preset sequence. CONSTITUTION:A belt mark M on a wrapping material web W, is provided for every part of container component parts. A plurality of mark detectors 1, 2, 3 are located along the travelling direction of the mark M and its rectangular direction with a certain interval therebetween. A mark distinction procedure, which is not shown in the figure, determines the detection of the mark M when the detectors 1-3 perform their ON/OFF action along with a preset sequence. Even if some pattern such as picture image is printed, misconseption as mark with it is prevented, in this way.</p> |
