Glossary of Terms

Content courtesy of Neenah Paper and Packaging.

Label Paper
Paper used for labeling applications. It may or may not have pressure sensitive adhesive backing added to the sheet.
Laid Dandy Roll
A dandy roll made for the purpose of imparting a laid finish to paper. It is composed of wires running parallel to the roll’s axis and attached to the frame by evenly spaced chain wires that encircle the circumference of...
Laid Paper
Term describes the finish imparted by a dandy roll which features wires parallel to its axis that impress the paper during manufacture to produce a permanent watermark. The wires which produce the laid effect are situated parallel on the dandy...
Paper that is developed by fusing one or more layers of paper together to the desired thickness and quality.
The slightly extended areas of printing surfaces in color plates, which make for easier registration of color.
Lap Register
A register achieved by overlaying a narrow strip of the second color over the first color, at the points of joining.
Last Color Down
The last color printed.
The drawing or sketch of a proposed printed piece. In platemaking, a sheet indicating the settings for a step-and-repeat machine.
Layout Sheet
The imposition form; it indicates the sequence and positioning of negatives on the flat, which corresponds to printed pages on the press sheet. Once the sheet is folded, pages will be in consecutive order.
In composition, rows of dashes or dots to guide the eye across the page. Used in tabular work, programs, tables of contents, etc…
The ability of an ink to flow.
Letterpress Printing
Also known as relief typographic printing, letterpress printing employs the use of type or designs cast or engraved in relief (raised) on a variety of surfaces which can include metal, rubber, and wood. Opposite of intaglio printing, in letterpress printing...
The evenness of a paper determined by the fiber distribution.
Library Binding
A book bound in accordance with the standards of the American Library Association, having strong endpapers, muslin-reinforced end signatures, sewing with four-cord thread, cotton flannel backlining, and covers of Caxton buckram cloth, with round corners.
Maximum number of sheets handled by operator of guillotine cutting machine or by paper handler loading paper for printing.
The degree to which a paper or printed piece will resist a change in color when exposed to light.
The "glue" that binds the cells of the tree and creates its structure. This product is removed in the kraft process. Approximately one third of the tree is lignin.
Noticeably similar side-to-side color and finish of a sheet of paper.
Line Copy
Any copy suitable for reproduction without using a halftone screen.
Line Drawing
A drawing containing no grays or middle tones. In general, any drawing that can be reproduced without the use of halftone techniques.
Line Negative
A negative made from line copy.
Linear Paper
A watermarked sheet with lines to guide the user.
Linen Finish Paper
A paper embossed to have a surface resembling linen cloth.
The material which is pasted down on the backbone (spine) of a book to be casebound, after it has been sewn, glued off, and then rounded. It reinforces the glue and helps hold signatures together.
Small fuzzy particles in paper.
The allowance for overlap of one-half of the open side edge of a folded section, needed for sewn and saddlestitch binding, for feeding the sections; also called lap.
Lithographic Image
An ink-receptive image on the lithographic press plate; the design or drawing on stone or a metal plate.
Lithographic Papers
See offset papers
A generic term for any printing process in which the image area and the nonimage area exist on the same plane (plate) and are separated by chemical repulsion.
Localized Watermark
Achieved by arranging the design on the dandy roll to leave a watermark at a predetermined place on the sheet.
A mark or symbol created for an individual, company, or product that translates the impression of the body it is representing into a graphic image.
Long Grain
Paper made with the machine direction in the longest sheet dimension.
Long Ink
An ink that has good flow on ink rollers of a press. If the ink is too long, it breaks up into filaments on the press, and causes flying as on a newspaper press.
Degree of permanence.
To fold a sheet lengthwise in the direction of the grain.
Loose Back
A popular style of binding, in which the spine binding material is not glued to the binding edge of the sheets.
Loose Register
Color that fits "loosely"; positioning (register) is not critical.
Low Bulk
Refers to papers somewhat thinner than the usual papers of the same weight, having a smooth surface, and which is a "thin" sheet.
Low-Key Picture
A continuous tone photo made up of predominantly shadow areas of the same tone.