| 摘要 |
A method of reading a valuable document which, in conjunction with its manufacture, has placed on or embodied in the document substratum, such as its paper when applicable, at least one continuous optical fibre (7), the two end surfaces (8, 9) of which are both located at the edge of the document (1). Light-emitting devices are caused to illuminate the first and the second surface of the fibre or fibres, and light-sensitive devices are caused to detect whether or not the end surface of the fibre, or the end surfaces of respective fibres, emits or emit, light when illumination and/or detection takes place at one or more pre-determined locations on the document. The invention also relates to a valuable document having placed on or incorporated in the document substratum, such as paper when appropriate, at least one continuous optical fiber (7), the two end surfaces (8, 9) are both located at the edge of the document (1), each fibre being arranged to conduct light emitted at the first end surface (8) of the fiber to its second end surface (9). The invention also relates to an arrangement for reading valuable documents in accordance with the method. |
