Books Printing: Ring Binder, Ring Binders, Zipper Binder

Ring binders are folders in which punched pieces of paper may be held by means of clamps running through the holes in the paper. These retainers are usually spring-loaded, frequently circular, and may have additional latching systems.<br>Most binder covers are made of three pieces, in the fashion of a hardback book, but are produced in many styles. Materials vary widely. Some vinyl binders have a clear pocket on the outside for cover pages, and many have pockets in the inner cover for loose papers, business cards, compact discs, etc. There are also zipper binders, which zip the ring binder up and keep papers from falling out.