| 摘要 |
<p>PROBLEM TO BE SOLVED: To make it possible to simply attach/detach a retrieval unit, and simply blind and remove a chart. SOLUTION: A base 6 with a storing frame 5 which is elastically deformed by a protrusion formed on the surface of a retrieval unit is firmly held and fixed between the folded parts 2 of a binder main body 1 formed of front covers 3, 4 and the folded parts 2 obtained by replicating one piece of flexible plate material in the center. At the same time, bands 9, 9 with a narrow part formed at the tip of the folded parts 2 are provided at a specified interval, and also fixed parts which allow and block the passage of the narrow part are provided on the front cover 4 positioned opposite to the bands 9. 9.</p> |
