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<p>A <b>springback binder</b> is a device for rapid and repeated binding of loose-leaf collections into books.
</p><p>The springback binder resembles the outer parts of a <a href="Hardcover" title="Hardcover">hardcover</a> book, with a <a href="Bookbinding" title="Bookbinding">spine</a>, a front cover, and a back cover.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The spine however includes a steel <a href="Spring_(device)" title="Spring (device)">spring</a> that serves to hold together the inner book as soon as it is inserted.
When the front and back covers are pushed apart by more than <a href="Angle" title="Angle">270 degrees</a>, the spring will open, and the inner book can be inserted, removed or supplemented by individual leaves.
The process takes only a few seconds, and the finished bound book is like a book with hard cover.
Typical <a href="Paper_size" title="Paper size">paper sizes</a> are A4 and A5, or their equivalent, the maximum stack height is usually 2 cm.
</p><p>In contrast to other binding methods, the binder can be reused by simply removing the old inner book block and replacing it by a new one.
This way, the binder can be used for decades for always new content.
Furthermore, no additional devices are required than the binder itself.
Since the inner book is neither glued, nor stitched or stapled, it can still be used as a master for additional copies.
</p><p>In the <a href="East_Germany" title="East Germany">GDR</a>, a springback binder in A5 format was part of a first grader's typical equipment.
During the school year, it was filled with exercise sheets that were distributed one by one.
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<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
<ul><li><a href="Loose_leaf" title="Loose leaf">Loose leaf</a></li>
<li><a href="Ring_binder" title="Ring binder">Ring binder</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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</style><cite id="CITEREFSaltmanForsythe1986" class="citation book cs1">Saltman, David; Forsythe, Nina (1986). <a rel="nofollow" class="external text" href="https://www.google.co.in/books/edition/Lithography_Primer/_ypUAAAAMAAJ?hl=en&gbpv=1&bsq=springback+binder+repeated+binding&dq=springback+binder+repeated+binding&printsec=frontcover"><i>Lithography Primer</i></a>. Graphic Arts Technical Foundation. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-88362-085-4</bdi>.</cite></span>
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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite id="CITEREFLyman1993" class="citation book cs1">Lyman, Ralph (1993). <a rel="nofollow" class="external text" href="https://www.google.co.in/books/edition/Binding_and_Finishing/dlHhAAAAMAAJ?hl=en&gbpv=1&bsq=springback+binder+repeated+binding&dq=springback+binder+repeated+binding&printsec=frontcover"><i>Binding and Finishing</i></a>. Graphic Arts Technical Foundation. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-88362-163-9</bdi>.</cite></span>
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