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Glossary Of Terms
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-- H -- Hairline register: Printing registration that lies within the range of plus or minus one half row of dots. It is the thinnest of the standard printers' rules. Halftone: Tone graduated image composed of varying sized dots or lines, with equidistant centers. Halftone Paper: A high finish paper that is ideal for halftone printing. Halftone Screen: A sheet of film or glass containing ruled right-angled lines, used to translate the full tone of a photo to the halftone dot image required for printing. Hard Dot: The effect in a photograph where a dot has such a small degree of halation that the dot shows quite sharp. Head Margin: That space which lies between the top of the printed copy and the trimmed edge. Hickies: Imperfections in presswork due to dirt on press, trapping errors, etc. High Bulk Paper: Paper stock that is comparatively thick in relation to its basis weight. High Key Halftone: A halftone that is made utilizing only the highlight tones down through the middle tones. Highlight Dot: The highest density of a halftone image. Highlights: The lightest tones of a photo, printed halftone or illustration. In the finished halftone, these highlights are represented by the finest dots. Hollow: That space on the spine of a case bound book between the block of the book and the case binding. Hot melt: An adhesive used in the binding process, which requires heat for application. House Sheet: This is a term that refers to a paper that a printer keeps on hand in his shop. |