1. Book block. The body part of a book covered by a cover. (Printers generally call a book that has not yet been covered a block.)

2. Cover. The cover is called "face" because the cover is the face of a book. The appearance of the cover shows the style and temperament of a book, the cover is printed with the name of the book, the author, the name of the publisher, and the quality of the cover even affects whether the reader buys the book. However, the basic role of the cover is not to beautify, but to protect the book block, so that it should not be damaged and folded, and the "seal" word in the "cover" has the meaning of encapsulating the book block and protecting it.

The broad cover not only refers to the front part of a book, but also includes one, two, three, four (back cover), spine, and mouth, because these parts are a whole, and all play the role of protecting the book core. The narrow cover only refers to one, which should be the meaning of the cover recognized by the public.

According to different binding requirements, the cover also has other forms such as waist seal, protective seal, bag seal, etc., which will be detailed later.

3. Back cover. The concept corresponding to the narrow cover is also called the fourth cover, that is, the back part of a book. The back cover will generally have a unified design and style with the front cover, and the main content displayed is the book number, bar code, pricing, editorial responsibility and design responsibility.

4. Spine. This is a visual analogy. If you think of a book as a person, the side of the book shows the vertical section of the title, like its back; Therefore, the spine of the book is also called the back.

5. Strangulation. The cover of a paperback book extends to the right until it is flush with the core and folds in (hence the folding). The main function of the slit is to increase the thickness of the cover, so that it is not easy to bend, in order to better protect the book block.

6. Flip. The part that the hand touches when turning a book, that is, the part on the right side of a book that is cut.

7. Top of the book. The side cut part of a book.

8. Book bottom. The side cut of a book.

9. Waist wrap. A strip of paper wrapped around the cover, the length of which is the same as the cover, and the height is generally less than one-third of the cover. The main function of the waist cover is to place the publicity information of the book to make up for the lack of cover space. The waist seal is like a belt, wrapped around the waist of a book, hence the name.

10. Cover. The cover literally means to protect the cover of the cover, and the corresponding concept of the cover is the inner seal. Cover is often used in hardcover books, the cover of hardcover books is more delicate, and commonly used cloth, so it can not print too rich color and content; The outer layer is then wrapped with a protective seal, which can not only better protect the inner seal, but also present richer content. Paperback books are also useful jackets, which enhance the sense of form and hierarchy of the book, and its decorative role has exceeded its protective role.

11. Inner seal. Refer to the previous "encapsulation".

12. The endsheet. Endsheet refers to the hardcover book half pasted on the hardcover cover, half pasted on the title page and the end page of the book, one in front and one in front of the book. The endsheet is generally used as a thicker special paper, which mainly plays a firm and beautifying role. Open the cover of the hardcover book, the first and last pages are the backing pages.

13. Backing pages. Paperback books also have a ring lining, but they are single pages, generally called backing pages. Paperback pages are generally only placed between the cover and the title page, called the backing page or the front backing page; There are also front and back, used in the book between the end page and the third cover called back page. The liner is also called the liner paper, and the front and back liner are called the front liner paper and the back liner paper. The main function of paperback book backing is decoration, its role is slightly equivalent to the "screen wall" in Chinese architecture, so that people open the book with suspense, so that they will not see the text of the book at a glance.

Hardcover book specific terms:

1. Ribbon. A colored cloth tape pasted into the opening of a hardcover book acts like a bookmark, also known as a bookmark tape.

2. Head &Tail band. The cloth strip pasted in the gap between the book block and the cover is used to make the book block more beautiful.

3. Flap mouth. The cover of a hardcover book is usually two or three millimeters above the block, so that even if it is squeezed, it will not hurt the block. This small part of the book block is the floating mouth, which mainly protects the book block.