Printing brochures, books, and periodicals on the function and design of book letters
Book letter, also known as envelope, was called "shupi" in ancient times, referring to the outer cover of a scroll. In Wang Jia's "Shi Yi Ji: Qin Shi Huang" during the Jin Dynasty, it is recorded that "the two of them ate on the road every time they pretended to eat, peeled the bark of the tree and woven it into a book, in order to collect good books from all over the world
The letter is the binding part on the outside of a book, used to protect and facilitate access to multi volume collections of books, and plays a role in preventing dust, moisture, decay, and light. Nowadays, most publications use covers and protective covers to provide good protection. Therefore, letter covers are only used in classic works, ancient books, commemorative books, or other books with collection value. They can increase the level of books, reflect high artistic value and added value, shape the overall image of books, and reflect the unique temperament and taste of books.
The letter of Zhu Xi's Thousand Character Book, designed by Jing Ren, is carved from paulownia wood and connected with leather strings. It is designed in imitation of the woodblock printing method of the Song Dynasty, with a calm and dignified appearance that complements the form and content. Traditional thread bound books have softer paper and thinner covers, and many are nested books, so they must be covered with letter covers. At that time, letter covers were mostly made of cardboard or wooden boards, with fabrics mounted on the surface and bags made of silk fabrics. Due to the development of printing technology, modern publications have made great breakthroughs in the design of letter covers. The forms of letter covers are more diverse, and it is more common to see letter covers that wrap around the five sides of a book, leaving only one side as a book socket.
There are also some letter cases that borrow the style of cabinets or drawers, usually used to store complete sets and precious books. The letter of the "Archaeological Atlas of the Western Regions" designed by Lv Jingren adopts the style of a three-dimensional cabinet, which is convenient for the retrieval, storage, and collection of precious classics. The design of the letter cover should balance both artistic and practical aspects, and should not consider the letter cover itself alone. The letter cover and the book should be considered as a complete artistic object. The cover design of classic books should be simple and solemn, reflecting the profound cultural connotations and profound thoughts.
The design of the letter cover for art books should be exquisite and elegant, with corresponding graphics and text designed according to the content of the book. The color should be coordinated with the book cover, stable and elegant, with a high artistic taste, suitable for the function and design of hard seals. Hard seals, also known as inner covers, are a commonly used form in hardcover books. It complements the protective cover, and due to the material characteristics, it is generally designed in a simple and pure style, with a tendency towards single colors and symbolic graphics for ease of printing and production. The commonly used materials include cardboard, wood, cloth, leather, etc. Mainly using complex production techniques such as hot stamping, embossing, and embossing to highlight the high-end and exquisite beauty.

Printing brochures, books, and periodicals on the function and design of book letters