When printing, the spots of ink pigments on printing plates or press rollers, due to the vehicle carrying the ink not being able to hold the pigment in suspension.

Chemical used as a filler.

A vertical series of steel rolls at the end of the paper machine to increase the smoothness of the paper.

To impart a smooth finish on paper by passing the web of paper between polished metal rolls to increase gloss and smoothness.

The thickness of a sheet paper, in thousandths of an inch (points or mils).

A book bound with a hard, cover.

For paper manufacturing, the primary component of the cell walls of wood fibers.

The fiber remaining after bleaching and pulping of wood used in making paper.

The facing pages in the center of a bound signature.

The lines on laid paper parallel with the grain; also referred to as "chain marks".

Improper drying of ink. Ink vehicle has been absorbed too rapidly into the paper leaving a dry, weak pigment layer which dusts easily.

A type fonts letter, number, symbol or a blank space in typesetting.

The number of characters in a line of text, page or group of text.

A light duplication of a printed image on the other side of the same sheet, created by chemical reaction by the ink during the drying stages; also referred to as "Gas ghosting".

Wood fiber cooked using chemicals producing a pulp used to manufacture numerous printing papers and paperboard products. Papers manufactured with chemical pulp are called "free-sheet" papers.

An inexpensive thick one-ply cardboard, typically made from recycled paper stock.

Chlorine and its compounds were commonly used to bleach fibers. This has been mostly eliminated. Virgin fibers are generally ECF, meaning no elemental chlorine or TCF meaning the bleaching is done with hydrogen peroxide, oxygen or ozone. Recycled fibers are...

Describes paper fibers that are uniformly dispersed within a sheet of paper -a characteristic of quality paper.

Uniform density in a sheet of paper.

Same as cloud effect; cloudy. Opposite of close formation. Indicates unevenness and lack of uniformity of fiber structure.

A rough, uneven, hard paper finish. Most frequently manufactured in bond papers.

A color on the bluish side.

In binding, gathering sections (signatures) in sequence for binding.

Printed bars of ink colors used to monitor a print image. These bars show the amount of ink to be applied by the press, the registration, and the densities across the press sheet.

A mockup of a proposed layout used for presentations.

Any method to improve color rendition.

The ability of dyed paper to maintain in the presence of exposure to light, heat etc.

Instructions attached to artwork or disc with the location, percentage, and type of color required.

Printing done using cyan, magenta, yellow, and black inks, each requiring its own negative and plate. Also called process color or four-color process.

Initial printed pieces pulled off the press for final approval.

A scanner that makes the color separation required in full color processing printing.

The method used in breaking down the primary colors needed to prepare plates for printing color work.

Paper manufactured to within acceptable tolerances of a sample provided to the mill.

A classification of low-quality bond and offset papers.

Multiple pictures images placed together to form a single, combined picture.

A simulation of a layout by a designer to show how the finished art work would appear.

Final proof presented in the format the printed piece will take.

A particular typeface that allows more print per line, as though the letters were squashed at their sides.

Allowing paper to adjust itself to the temperature and humidity of the printing plant prior to use.

The preservation and responsible use of our natural resources to ensure they endure.

Tonal gradation without use of halftone dots.

Company that converts paper from its original form to usable products such as envelopes, label stock, announcements etc.

Writing papers in attractive finishes, weights or colors.

Papers utilizing cotton linters. Today most cotton content papers are made for letterhead applications. Papers made with cotton range from 25% to 100% cotton content.

The cotton fibers that adhere to the cottonseed used to produce pulp for cotton fiber papers. As a byproduct of the cotton industry, EPA recognizes it as recovered fiber.

On a paper making machine the equipment that helps remove excess water from the moving web of paper prior to the wet press section of a paper machine.

Durable, heavier weight papers, available in a variety of finishes and colors, used for the cover of pamphlets, annual reports, business cards, etc…

Specifically placed marks attached to artwork that show the area to be printed.

Resizing original photographs or illustrations to a different size.

The opposite direction of the grain of the paper.

A fold at a right angle to the direction of the grain in the paper.

A line perpendicular to the direction the paper travels through the papermaking machine. Also referred to as Cross direction or Cross grain.

Undesirable distortion or waviness occurring to the paper due to the presence of excess moisture or humidity.

Papers cut 8 ½ x 11, 8 ½ x 14, or any other size 11 x 17 or smaller.

Term used for watermarked letterhead papers to indicate the watermark will be cut to appear in a predetermined position on the finished sheet. Also referred to as a localized watermark.

Paper dust resulting from cutting or trimming the paper which can transfer to printing blankets causing problems during a press run.

One of the four-process colors.