摘要 |
<p>The system produces business letter ready for posting, the rear sheet of the envelope containing the original text and the cover sheet with inspection window being joined by heat-sealing glue. The rear sheet and the cover each form sections of endless strips with detachable edges containing guide holes. These are combined after the printing station and then parted off to form the individual letters. On the cover sheets there can be a layer of hot sealing glue extending right the way round.</p> |