| 摘要 |
The document file comprises top, bottom, and back, together with a stapling mechanism and fold lines at the back running parallel to the stapling line of the mechanism. Between the back (2) and the top (1) are several sections (A) protruding inwards and folded in a zig-zag pattern detachably together. They can be enclosed by a U-shaped clamping rail (11). The design allows the file to accommodate a much thicker stack of documents, without reducing the area of the top. |
