Back Up
(1) To print on the second side of a sheet already printed on one side. (2) To adjust an image on one side of a sheet so that it aligns back-to-back with an image on the other side.

Bind
Usually in the book arena, but not exclusively, the joining of leafs or signatures together with either wire, glue or other means.

Bindery
Usually a department within a printing company responsible for collating, folding and trimming various printing projects.

Blanket
Rubber-coated pad, mounted on a cylinder of an offset press, that receives the inked image from the plate and transfers it to the surface to be printed.

Bleed
Printing that extends to the edge of a sheet or page after trimming.

Blind Folio
A page number not printed on the page. (In the book arena, a blank page traditionally does not print a page number.)

Blind Image
Image debossed, embossed or stamped, but not printed with ink or foil.

Blocking
Sticking together of printed sheets causing damage when the surfaces are separated.

Blow-Up
An enlargement, usually used with raphic images or photographs

Body
The main text of work not including the headlines.

Bond paper
Category of paper commonly used for writing, printing and photocopying. Also called business paper, communication paper, correspondence paper and writing paper.

Book Block
Folded signatures gathered, sewn and trimmed, but not yet covered.

Border
The decorative design or rule surrounding matter on a page.

Bulk
Thickness of paper relative to its basic weight.

Burst Perfect Bind
To bind by forcing glue into notches along the spines of gathered signatures before affixing a paper cover. Also called burst bind, notch bind and slotted bind.

Butt Register
Register where ink colors meet precisely without overlapping or allowing space between, as compared to lap register. Also called butt fit and kiss register.