Bleed: Extending an image beyond the trim marks to eliminate borders or margins in the finishes piece.
Coil Bind: To bind by spinning a flexible plastic coil through holes punched along the edges of a stack of paper. Also called spiral bind.
Collate: To organize printed matter in a specific order as requested. Collate vs. Non-collate -- collated pages are in proper numerical order in each set. non-collated pages are in separate sets of each page.
Color Separation: The physical act of decomposing a color graphic or photo into single-color layers...cyan, magenta, yellow, and black (CMYK) for the purpose of offset press printing. In the case of digital printing, color separation is an internal software driven process. In either case, color separation is performed to provide the impression of infinite colors.
Comb Bind: To bind by inserting the teeth of flexible plastic comb though holes punched along the edge of a stack of paper. It is also called plastic or GBC bind.
Crop Marks: Lines near the edges of an image indicating portions to be reproduced. Also called cut marks or tic marks.
DPI: Dots per inch is a measure of resolution for printers, scanners and displays. Laser printers typically reach 1200 DPI, though 600 DPI is acceptable.
Duplex or Back to Back: Printing an image on both sides of a sheet of paper.
Head-to-head: Printing the top of the front of the page back to back with the top of the page on the back side.
Head-to-toe: Printing the top of the front of the page back to back with the bottom of the page on the back side.
Imposition: Arrangement of multiple pages on large sheets so they will appear in proper sequence after sheets are folded and bound.
Margins: The border around the page where the printers can't print. This area is .25" on most copiers.
Original: Your typeset hard copy or digital file from which copies are produced.
Registration: Putting two or more images together so that they are exactly aligned and procducing a sharp image.
Signature Booklet: The collated pages of one folded and trimmed form, making up one section of a bound book.