Case binding (or edition binding) is the type of binding used in hardback books. The process involves sewing the individual signatures together, leveling the spine, and applying endsheets and a piece of cloth to the spine. After this process, the hard cover is added. The spine of a book made through case binding may have grooves along the edges however, the spine is usually rounded.
*Case binding is the suggested method of binding for books that are used daily (text books, encyclopedias, dictionaries, logs, diaries, registers, etc.).