Reverse-contrast typefaces

A reverse-contrast or reverse-stress letterform is a typeface or custom lettering where the stress is reversed from the norm, meaning that the horizontal lines are the thickest. This is the reverse of the vertical lines being the same width or thicker than horizontals, which is normal in Latin-alphabet writing and especially printing. The result is a dramatic effect, in which the letters seem to have been printed the wrong way round. The style was invented in the early nineteenth century as an attention-grabbing novelty for display typefaces. Modern font designer Peter Biľak, who has created a design in the genre, has described them as "a dirty trick to create freakish letterforms that stood out." Reverse-contrast letters are rarely used for body text, being more used in display applications such as headings and posters, in which the unusual structure may be particularly eye-catching. They were particularly common in the nineteenth century, and have been revived occasionally since then. They could be considered as slab serif designs because of the thickened serifs, and are often characterised as part of that genre. The reverse-contrast effect has been extended to other kinds of typeface, such as sans-serifs. There is no connection to reverse-contrast printing, where light text is printed on a black background.

Historical background

Throughout the development of the modern Latin alphabet with an upper-case based on Roman square capitals and lower-case based on handwriting, it has been the norm for the vertical lines to generally be slightly thicker than the horizontals. Early 'roman' or 'antiqua' type followed this model, often placing the thinnest point of letters at an angle and downstrokes heavier than upstrokes, mimicking the writing of a right-handed writer holding a quill pen. (The Hebrew alphabet, in contrast, is normally "reverse-contrast" from a Latin-alphabet perspective, as the verticals are lighter.) From the arrival of roman type around 1475 to the late eighteenth century, relatively little development in letter design took place, as most fonts of the period were intended for body text, and they stayed relatively similar in design and rooted in traditions of Italian humanistic handwriting.

Starting in the seventeenth century, typefounders developed what are now called transitional and then "modern" or Didone types. These typefaces had a far greater amount of stroke contrast than before, with the difference in stroke width much greater than in earlier types. These had more constructed letterforms, catching up to the steely calligraphy of the period, and daringly slender horizontals and serif details that could show off the increasingly high quality of paper and printing technology of the period. In addition, these typefaces had a strictly vertical stress: without exception, the vertical lines were thicker than the horizontals, creating a much more geometric and modular design. A second major development of the period was the arrival of the printed poster and increasing use of signpainting and printing for publicity and advertising. This caused a desire to develop eye-catching new types of letters. As a result, new styles of lettering and "display type" began to appear, such as "fat face" bold faces, sans serif letters, apparently inspired by classical antiquity, and then slab-serifs. These letterforms were a new departure and not simply larger versions of traditional serif letters. Presumably to be more eye-catching, these new styles of letter were often extremely bold.

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