Paper especially formulated with a protective background to show erasures, or other means to expose forgery or document alterations, such as paper used for checks, bonds, bank slips, coupons, tickets, …
Scaling
The act of—or the computer function that facilitates—altering the size of an image or font proportionately. See Scale.
Semichemical Pulping
Method of converting wood chips to paper pulp for papermaking utilizing a combination of chemical and mechanical means. The purpose of pulping is to separate individual fibers of cellulose from other non-fibrous components of wood, in …
Sharpen
A process by which the printing size of halftone dots is reduced and is often performed to reduce the effects of dot gain. On color separation negatives, sharpening is accomplished by means of dot …
Sharpness
An attribute of any image that describes the degree of clarity of the edge(s) of that image. Sharpness is applied to photographs, digital images, scans, proofs, line art, a computer video …
Sharpness Filter
A tool in digital image manipulation programs to increase the sharpness of an image. See Sharpness.
Sheet
An individual, rectangular piece of paper, as opposed to a continuous paper web, cut to a particular standard size orodd size. The term sheet also refers to a metal substrate greater than 0.006 …
Sheet Decurler
A device on some sheetfed printing presses (especially those used in offset lithography) located between the lastimpression cylinder and the delivery pile that works to remove the curl from press sheets. A typical sheet …
Sheeter
A device used to cut a paper web into individual sheets. See Single Rotary Cutter and Double Rotary Cutter, andSheeting
Sheetfed
Descriptive of any printing press which prints on discrete sheets of paper (or other substrate). See also webfed. Also spelled with a hyphen, sheet-fed.