Back: The back of a book is the binding edge. To back a book is to shape the back of a previously rounded book, so as to make a shoulder on either side against which the front and back covers fit closely.

Back Up: Printing on the reverse side of a sheet already printed on one side. Back up position is critical and must be accurate to ensure consistent position throughout a folded product.

Bank: a lightweight writing paper.

Base artwork: artwork requiring additional components such as halftones or line drawings to be added before the reproduction stage.

Baseline: the line on which the bases of capital letters sit.

Bed: the base on which the Form is held when printing by Letterpress.

Binding: the various methods used to secure loose leaves or sections in a book; eg saddle-stitch, perfect bound.

Bimetallic Plate: Plate in lithography used for long runs. The printing image base is usually copper and the non-printing area is aluminium or stainless steel, giving a harder wearing plate than the conventional aluminium litho plate.

Bit: In computers, the basic unit of digital information. It is a contraction of BInary digiT (BIT).

Bit Map: In computer imaging, the electronic representation of a page, indicating the position of every possible spot from 0 to 100 and rest from other document.

Black and White: Originals or reproductions in single colour, also known as monotone or mono.

Blanket: In offset printing, a rubber surfaced fabric that is clamped around a plate cylinder to transfer the image from the impression cylinder to the substrate.

Blanket Cylinder: the cylinder via which the inked litho plate transfers the image to the paper. The cylinder is covered with a rubber sheet which prevents wear to the litho plate coming into contact with the paper.

Bleed: When the printed image extends beyond the trimmed area of a page, the image must be increased, usually by a minimum of 3mm.  This extended area is known as the bleed.

Blind: term applied to a litho plate which has lost its image; also to book covers which are blocked or stamped without the use of ink or metallic effect.

Blind Embossing: The process of stamping an image into the paper to produce a depressed effect on the paper surface, without the use of inks.

Block: In binding, to impress or stamp a design upon the cover. The design can be blocked in coloured inks, or metal foil, including special effects such as holographic.

Blister Packaging: method of packaging in which an object is placed in a pre-formed, clear plastic tray and backed by a printed card.

Block: in binding, to impress or stamp a design upon the cover. The design can be blocked in coloured inks, gold leaf or metal foil (see blind). In printing, a letterpress block is the etched copper or zinc plate, mounted on wood or metal from which an illustration is printed.

Block In: to sketch in the main areas of an image prior to the design.

Blurb: a short description or commentary of a book or author on a book jacket.

Board: paper of more than 200gsm.

Body (US): the main text of the work but not including headlines.

Body Size: the height of the type measured from the top of the tallest ascender to the bottom of the lowest descender. Normally given in points, the standard unit of type size.

Bond: a sized finished writing paper of 50gsm or more. Can also be used for printing upon.

Bound Book: a book in which the boards of the cover have first been attached to it, the covering of leather, cloth, or other materials being then affixed to the boards. Bound books are more expensive to produce and much stronger than cased books.

Box: a section of text marked off by rules or white space and presented separately from the main text and illustrations. Longer boxed sections in magazines are sometimes referred to as sidebars.

BPOP: abbreviation for “Bulk packed onto pallets”.

Bristol Board: a fine board made in various qualities for drawing.

Broadsheet: any sheet in its basic size (not folded or cut); also denotes a newspaper format.

Broadside: an original term for work printed on one side of a large sheet of paper.

Bromide: a photographic paper used in phototypesetting on which a photographic image is created. Almost obsolete with the advent of digital artwork.

Bronzing: an effect produced by dusting wet ink after printing with a metallic powder.

Bulk: Thickness of a sheet of paper or board.  Usually measured in microns (1,000th of a millimetre)

Burst Binding: a type of adhesive binding in which the back of the book block is not sawn off but is slit in place to allow glue to penetrate.