| 摘要 |
<p>A thin flexible cover (200) is fitted over the document-retaining housing (108) in a conventional ring binder; instead of documents, other items can be retained in the ring binder. The cover (200) may be adhered, snap-fitted or permanently attached to the underlying housing (108). A visible surface is provided with information relating to items to be retained in the ring binder, e.g. by symbols, letters, numerals or the like in different colours and/or in Braille. The document-related information thus provided is accessible to a user when the ring binder is in an open state, even when retained documents on both sides of the centre of the ring binder file. By choice of thickness and mechanical stiffness of the cover material, the cover (108) can be used to enhance the strenght of the mechanism allowing the ring (116a, 118b, 120a-b) of the binder to be opened and hence enhance the ability of the ring binder to retain documents without bursting open. The cover (200) also serves to protect retained documents form damage due to the rusting or corrosion of metal elements of the housing (108).</p> |
