| 摘要 |
The invention concerns a form for non impact printers, characterized in that it consists of four sections including an upper section and a lower section, and in that each section is separated from the next section by parallel fold lines or perforations. The upper section has the same surface area as the total surfaces of the two subsequent sections, over which the upper section is folded before printing, in such a manner that after printing the upper section can be folded further over the lower section and that an image can be transferred to the lower section by means of mechanical or chemical self-copying techniques by exerting a pressure on the upper section. |
