| 摘要 |
<p>A binder which composes an outer cover of a book or a catalog and protects the book or the catalog comprises: a hard cover which is composed of a single plate, is folded and unfoldable, and forms a front plate, a middle unit, and a back plate, and wherein an upper and a lower portion thereof are open in a folded state, and an end of the front plate and an end of the back plate are connected to enclose the book or the catalog; a fixing member disposed on the middle unit in the hard cover to turnably fix a portion of the book or the catalog; a locker which is composed of a magnetic body and a metallic body installed on the end of the front plate and the end of the back plate, respectively, and bound by a magnetic force of the magnetic body, and locks the end of the front plate and the end of the back plate to open and close the end of the front plate and the end of the back plate; and an antipollution cover which covers the open upper and lower portions of the hard cover in an openable/closable condition while the hard cover is folded, and is fixed by the locker as a medium to prevent pollution of the book or the catalog.</p> |
