glossary
Stock | A term used to refer to all types of paper, transparencies, and other |
| printable materials. Also called media or substrate. |
Streaking | Undesirable artifacts caused by linear irregularities in ink or toner |
| transfer. |
Substrate | A term used to refer to all types of paper, transparencies, and other |
| printable materials. Also called media or stock. |
Swatch | A sample book, usually of available printed colours (such as spot or |
| Pantone colours). |
SWOP | Short for Specifications for Web Offset Publications. A set of standards |
| for offset printing that contains specifications for ink, paper, print |
| densities, etc. |
Tail edge | The edge of the paper that is last fed into an offset press. |
TIFF | Short for tagged image file format. A bitmapped graphic file format that |
| is widely used. |
Tint | A tint is a lightened spot or process colour created by printing smaller |
| halftone dots of the base colour. |
Toner | Particles used in the electrophotographic print process. They consist of a |
| resin binder, pigments (for colour), and a charge agent. Toners can be |
| dry or liquid. |
Traditional printing | A common term for offset printing. |
Trail edge | The edge of the paper that is last fed into a printer. |
Trapping | The slight, intentional overlapping of the edges of print elements to |
| compensate for minor variations in registration. Used to eliminate white |
| lines between colours which may otherwise appear while printing. |
Trim | The cutting of a printed job to the correct finished size. |
Turnaround | The elapsed time between submission of a print job and receipt of the |
| final finished product. |
UCR | Short for Under Colour Removal. A method for replacing equal |
| combinations of cyan, magenta and yellow with black. |
Uncoated | Paper in which the printing surface is the paper stock itself. |
Undertrapping | A condition that occurs on an offset press when less ink transfers to |
| previously printed ink than to unprinted paper. |
Value | The darkness or lightness of a hue. One of the three characteristics that |
| describe colour (along with hue and saturation). Also called lightness. |
Variable data | Data that changes from page to page in a digital printing operation |
| (also called variable information). See customisation, personalisation, |
| versioning. |
Variable information | Data that changes from page to page in a digital printing operation |
| (also called variable data). See customisation, personalisation, |
| versioning. |
G - 13
