A set of type characters of a particular typeface design and size. Each typeface, such as Times Roman, Helvetica and Arial, is typically made available in four variations: normal weight, bold, italic and bold italic. Thus, for bitmapped fonts, which are fully generated ahead of time, four fonts would be required for each point size of the typeface. For scalable fonts, which are generated in any point size on the fly, only four fonts would be required for each typeface.
Fonts mostly reside in the computer's hard disk as "soft fonts." However, with PostScript fonts, a basic set is built into the printer along with the PostScript rasterizing engine. In the early days, plug-in cartridges were common (see font cartridge
). See typeface
, bitmapped font
, scalable font
and PostScript fonts