| 摘要 |
<p>1447965 Record webs LAMSON INDUSTRIES Ltd 31 July 1974 [10 Aug 1973] 33742/74 Heading B6A A continuous record web has at least one row of transport perforations 11, and a plurality of parallel, pre-printed, half tone bars of two different colours extending transversely across the web and perpendicularly to the rows of perforations. Green bars 15 and red-yellow bars 16 may be printed alternately and be spaced by unprinted bars 17. Alternatively, some of the differently coloured bars may lie adjacent each other, Fig. 2 (not shown), or pairs of spaced bars of the same colour may be provided, Fig. 3 (not shown). The bars are said to render closely spaced lines of type printed thereon easily discernible. Transverse lines of weakness define forms in the web.</p> |
