| 摘要 |
This binder comprises an underpiece 2 which, equipped with a suspension bar 7 and with removal means for securing the sheets to be bound, is extended by two backs 4, 6 which are themselves extended in the first case 4 by the toppiece 3 equipped with a second suspension bar 7 and in the second 6 by a flap 5 which may be folded down over the outer surface of the toppiece 3 and provided with removable securing means co-operating with complementary means provided on this outer surface, this second back 6 being equipped with an external holding member 15. <IMAGE>
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