What does HB stand for in printing terms?

HB stands for hot binding, a process in which the pages of a book are bound together using heat and pressure. This method of binding is often used for books with a large number of pages, such as catalogs, magazines, and textbooks.

In hot binding, the pages of a book are first gathered and trimmed to the desired size. The spine of the book is then heated and glued, and the cover is attached. The book is then placed in a press to cool and set the glue.

Hot binding is a durable and cost-effective method of binding books. It produces books that are strong and long-lasting, and it can be used on a wide variety of paper types.