typeface

A typeface is the complete set of metal or wooden letter forms, numerals, and punctuation marks cast or cut to the same design standard. In letterpress printing, the typeface is the raised surface on the top of each piece of type that receives ink from the roller and transfers it to paper. The impression left behind on the printed sheet is also called the typeface, though more precisely it is the character as rendered by that particular type metal.

Metal typefaces were historically cast from brass matrices in a mold, producing type in point sizes from 6 point to 72 point or larger. The face itself was the letter form protruding above the body or shank of the metal block. Wooden typefaces, common for display sizes above 72 point, were hand-engraved or routed from hardwood blocks. Digital typefaces now specify the mathematical outlines and metrics of each character, but the term persists to describe any standardized design of letterforms.

Design and Measurement

A typeface design includes decisions about serif versus sans-serif structure, weight (light, regular, bold), width (condensed to expanded), and x-height, cap height, and baseline relationships. Each typeface must maintain consistent proportions across its character set so that letters kern and space predictably when set together. The em-square, originally the width of a capital M in a given size, now serves as the standard measurement grid for digital type: a typeface may be designed on a 1000-unit or 2048-unit em-square, with character widths and positioning defined relative to that grid.

Damage to metal type or worn cutting tools during type foundry production often resulted in imperfect faces with slight variations in relief height or surface irregularities, which could cause uneven inking or weak impression. Type dressing, the careful removal of burrs and correction of high spots, was a skill in its own right.

The distinction between typeface and font is now blurred in common usage, though in traditional practice a typeface was the design (for example, Garamond), and a font was a specific cast or digital instance of that typeface in one size and weight (Garamond bold 12 point). In digital work, the term font generally describes the complete data file or package that renders the typeface design.