Adhesive Binding. Applying a glue, usually a hot-melt substance, along the spine of the assembled, printed sections. The book or magazine cover is applied directly on top of the tacky adhesive. Also known as Perfect Binding
Binding Margin. The distance between the fold edge and the edge of the body of the text next to the fold.
Bleed. A printing area that extends beyond the cut marks before trimming.
Burst Binding. Burst Binding requires the spine to be notched which is done during the folding process with special burst notching attachments. During the binding process the glue penetrates the notches into the centre of the section.
Collating Marks. A distinctive, numbered symbol printed on the spine of the signatures to indicate the correct gathering sequence.
Crease Score. A fold made by pressing a groove into a paper stock without cutting its fibres.
Creep. The slight but cumulative extension of the fore-edges of each inserted section beyond the fore-edges of the section that it encloses. This results in progressively smaller trim size on the inside pages. This is more profound in thicker books.
Cut Score. A crease formed when the paper stock is partially split.
Concertina Fold. Two or more folds parallel to each other with adjacent folds in opposite directions, resembling the bellows of accordion. Also known as an Accordian fold, a Fan fold and a Z fold.
Die cut. A printed subject cut to a specific shape with sharp steel rules on a press.
Dummy. A set of blank or printed pages prepared to show the size, shape, page sequence, and general appearance of the finished printed product.
Fore-edge. The side edge opposite the spine of a section or a book.
Fold Marks. Guides on the original copy and printed sheet that indicate where a printed product will be creased, perforated or folded.
Folio Lap. The additional paper on the fore-edges of a signature that extends beyond the trim size of the pages. Folio laps are included so that binding equipment can grab and open the signature onto the feeding chain.
Gate fold. A four leaf sheet folded from the two outside edges inwards to enable the page to open from each side of the centre. A closed Gate fold requires an additional parallel fold to finish the size of 1 leaf.
Head. The top of a page, book, section or printing form.
Head Trim. The amount of paper that is cut off the sheet above the head margin.
Imposition Layout. A guide that indicates folding sequence, number of pages and section used, lay and grip edges, and cutting and scoring lines for a specific job.
Ink Jet Printing. A non impact printing process using a stream of electro-statically charged microscopic ink droplets. Ink jet printing is used to individualise demographic mailings.
Loop Stitching. A method of saddle-stitching whereby the stitch is formed into a semi circular loop that sticks out beyond the spine of the booklet. These loops slip over the rings of a ring binder, as an alternative to hole drilling.
Page Pull Test. A test that measures the force required to pull a page from the backbone of an adhesive bound book.
Perfect Binding. Refer to Adhesive Binding.
Section Sewing. Binding by sewing thread through the spine of a section and from section to section.
Section / Signature. One or more printed sheets folded to form a section of a book.
Spine. The binding edge of a section or book.
Trim out (Double Cut). The area between two books or folders that is removed when the job is completed two up and is cut apart by a fourth or fifth knife for books or slitters for folders.