right|thumbnail|200px|A typical hardcover book (1899), showing the wear signs of a cloth
A hardcover, hard cover, or hardback (also known as hardbound, and sometimes as casebound) book is one bound with rigid protective covers (typically of binder's board or heavy paperboard covered with buckram or other cloth, heavy paper, or occasionally leather).
Marketing
If brisk sales are anticipated, a hardcover edition of a book is typically released first, followed by a "trade" paperback edition (same format as hardcover) the next year. Some publishers publish paperback originals if slow hardback sales are anticipated. For very popular books these sales cycles may be extended, and followed by a mass market paperback edition typeset in a more compact size and printed on thinner, less hardy paper. This is intended to, in part, prolong the life of the immediate buying boom that occurs for some best sellers: After the attention to the book has subsided, a lower-cost version in the paperback, is released to sell further copies. In the past the release of a paperback edition was one year after the hardback, but by the early 21st century paperbacks were released six months after the hardback by some publishers. It is very unusual for a book that was first published in paperback to be followed by a hardback. One example is the novel The Judgment of Paris by Gore Vidal, which had its revised edition of 1961 first published in paperback, and later in hardcover.
Prices
Hardcover books are usually sold at higher prices than comparable paperbacks. Books for the general public are usually printed in hardback only for authors who are expected to be successful, or as a precursor to the paperback to predict sale levels; however, many academic books are often only published in hardcover editions.
Usual structure
Hardcovers usually consist of a page block, two boards, and a cloth or heavy paper covering.