Sizes

The size of a modern book is based on the printing area of a common flatbed press. The pages of type were arranged and clamped in a frame, so that when printed on a sheet of paper the full size of the press, the pages would be right side up and in order when the sheet was folded, and the folded edges trimmed.

The most common book sizes are:

• Quarto (4to): the sheet of paper is folded twice, forming four leaves (eight pages) approximately 11-13 inches (ca 30 cm) tall
• Octavo (8vo): the most common size for current hardcover books. The sheet is folded three times into eight leaves (16 pages) up to 9 ¾" (ca 23 cm) tall.
• DuoDecimo (12mo): a size between 8vo and 16mo, up to 7 ¾" (ca 18 cm) tall
• Sextodecimo (16mo): the sheet is folded four times, forming 16 leaves (32 pages) up to 6 ¾" (ca 15 cm) tall

Sizes smaller than 16mo are:

• 24mo: up to 5 ¾" (ca 13 cm) tall.
• 32mo: up to 5" (ca 12 cm) tall.
• 48mo: up to 4" (ca 10 cm) tall.
• 64mo: up to 3" (ca 8 cm) tall.

Small books can be called booklets.

Sizes larger than quarto are:

• Folio: up to 15" (ca 38 cm) tall.
• Elephant Folio: up to 23" (ca 58 cm) tall.
• Atlas Folio: up to 25" (ca 63 cm) tall.
• Double Elephant Folio: up to 50" (ca 127 cm) tall.

The largest extant medieval manuscript in the world is Codex Gigas 92 × 50 × 22 cm. The world's largest book is made of stone and is inKuthodaw Pagoda (Burma).

The longest book title in the world is 670 words long^{[citation needed]}.

Book design

Book design is the art of incorporating the content, style, format, design, and sequence of the various components of a book into a coherent whole.

In the words of Jan Tschichold, book design "though largely forgotten today, methods and rules upon which it is impossible to improve have been developed over centuries. To produce perfect books these rules have to be brought back to life and applied." Richard Hendel describes book design as "an arcane subject" and refers to the need for a context to understand what that means

Information explosion

Throughout the 20th century, libraries have faced an ever-increasing rate of publishing, sometimes called an information explosion. The advent of electronic publishing and theinternet means that much new information is not printed in paper books, but is made available online through a digital library, on CD-ROM, or in the form of e-books. An on-line book is an e-book that is available online through the internet.

Though many books are produced digitally, most digital versions are not available to the public, and there is no decline in the rate of paper publishing.^[26] There is an effort, however, to convert books that are in the public domain into a digital medium for unlimited redistribution and infinite availability. This effort is spearheaded by Project Gutenbergcombined with Distributed Proofreaders.

There have also been new developments in the process of publishing books. Technologies such as POD or "print on demand", which make it possible to print as few as one book at a time, have made self-publishing much easier and more affordable. On-demand publishing has allowed publishers, by avoiding the high costs of warehousing, to keep low-selling books in print rather than declaring them out of print.

Digital printing

Recent developments in book manufacturing include the development of digital printing. Book pages are printed, in much the same way as an office copier works, using toner rather than ink. Each book is printed in one pass, not as separate signatures. Digital printing has permitted the manufacture of much smaller quantities than offset, in part because of the absence of make readies and of spoilage. One might think of a web press as printing quantities over 2000, quantities from 250 to 2000 being printed on sheet-fed presses, and digital presses doing quantities below 250. These numbers are of course only approximate and will vary from supplier to supplier, and from book to book depending on its characteristics. Digital printing has opened up the possibility of print-on-demand, where no books are printed until after an order is received from a customer

Finishing

"Making cases" happens off-line and prior to the book's arrival at the binding line. In the most basic case-making, two pieces of cardboard are placed onto a glued piece of cloth with a space between them into which is glued a thinner board cut to the width of the spine of the book. The overlapping edges of the cloth (about 5/8" all round) are folded over the boards, and pressed down to adhere. After case-making the stack of cases will go to the foil stamping area for adding decorations and type.

Current processes

Some books, particularly those with shorter runs (i.e. fewer copies) will be printed on sheet-fed offset presses, but most books are now printed on web presses, which are fed by a continuous roll of paper, and can consequently print more copies in a shorter time. As the production line circulates, a complete "book" is collected together in one stack, next to another, and another.

A web press carries out the folding itself, delivering bundles of signatures (sections) ready to go into the gathering line. Notice that when the book is being printed it is being printed one (or two) signatures at a time, not one complete book at a time. Excess numbers are printed to make up for any spoilage due to "make-readies" or test pages to assure final print quality.

A make-ready is the preparatory work carried out by the pressmen to get the printing press up to the required quality of impression. Included in make-ready is the time taken to mount the plate onto the machine, clean up any mess from the previous job, and get the press up to speed. As soon as the pressman decides that the printing is correct, all the make-ready sheets will be discarded, and the press will start making books. Similar make readies take place in the folding and binding areas, each involving spoilage of paper.

After the signatures are folded and gathered, they move into the bindery. In the middle of last century there were still many trade binders – stand-alone binding companies which did no printing, specializing in binding alone. At that time, because of the dominance of letterpress printing, typesetting and printing took place in one location, and binding in a different factory. When type was all metal, a typical book's worth of type would be bulky, fragile and heavy. The less it was moved in this condition the better: so printing would be carried out in the same location as the typesetting. Printed sheets on the other hand could easily be moved. Now, because of increasing computerization of preparing a book for the printer, the typesetting part of the job has flowed upstream, where it is done either by separately contracting companies working for the publisher, by the publishers themselves, or even by the authors. Mergers in the book manufacturing industry mean that it is now unusual to find a bindery which is not also involved in book printing (and vice versa).

If the book is a hardback its path through the bindery will involve more points of activity than if it is a paperback.

Unsewn binding, is now increasingly common. The signatures of a book can also be held together by "Smyth sewing" using needles, "McCain sewing", using drilled holes often used in schoolbook binding, or "notch binding", where gashes about an inch long are made at intervals through the fold in the spine of each signature. The rest of the binding process is similar in all instances. Sewn and notch bound books can be bound as either hardbacks or paperbacks.

Book manufacture in modern times

Main article: Bookbinding

See also: Publishing

The spine of the book is an important aspect in book design, especially in the cover design. When the books are stacked up or stored in a shelf, the details on the spine is the only visible surface that contains the information about the book. In stores, it is the details on the spine that attract buyers' attention first.

The methods used for the printing and binding of books continued fundamentally unchanged from the 15th century into the early 20th century. While there was more mechanization, a book printer in 1900 had much in common with Gutenberg.

Gutenberg's invention was the use of movable metal types, assembled into words, lines, and pages and then printed by letterpress to create multiple copies.

Modern paper books are printed on papers designed specifically for printed books. Traditionally, book papers are off-white or low-white papers (easier to read), are opaque to minimise the show-through of text from one side of the page to the other and are (usually) made to tighter caliper or thickness specifications, particularly for case-bound books. Different paper qualities are used depending on the type of book: Machine finished coated papers, woodfree uncoated papers, coated fine papers and special fine papers are common paper grades.

Today, the majority of books are printed by offset lithography.^{[citation needed]} When a book is printed the pages are laid out on the plate so that after the printed sheet is folded the pages will be in the correct sequence. Books tend to be manufactured nowadays in a few standard sizes. The sizes of books are usually specified as "trim size": the size of the page after the sheet has been folded and trimmed. The standard sizes result from sheet sizes (therefore machine sizes) which became popular 200 or 300 years ago, and have come to dominate the industry. British conventions in this regard prevail throughout the English-speaking world, except for the USA. The European book manufacturing industry works to a completely different set of standards.