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setoff

Ink that is unintentionally transferred from the printed substrate to the back of the sheet above it as the pieces are stacked in a pile. See also: offset.

silverprint

A photographic print with having a brown color. The paper used has been treated with silver chloride. See also: blueline; brownprint; Van dyke.

spectrum

All the colors of the rainbow created by passing sunlight or white light through a prism. See visible spectrum; white light.

specular gloss

See: gloss.

spline

See vectors.

spread

1. An image that covers two pages that face each other in a book or publication. Other terms: crossover; reader's spread. See also: breakacross. 2. Moving the edges of a line image outward a little to overlap a color. Other term: fatty. See also; bleed; choke; registration; trapping.

step tablet

See gray scale.

Step wedge

See halftone step scale.

substrate

The material on which printed images or coatings are applied (e.g., cloth; film; foil; paper; etc.).