chapter one
typography
Typography is fundamental to a design, whether it has prominence or is in the background. While typography is most commonly used as text, it can also be used as a visual device or image in its own right. As designers often seek to highlight and emphasize text using different production processes, we thought it important to look more closely at this topic.
Type is comprised of various components that include thin lines, serifs and other features, and for these to reproduce well with production processes such as screen printing and foil blocking, some thought and planning will be required. The typography used in a design will naturally have an impact on the specifications for the job, whether in the printing processes used or the materials required.
Neenah Paper
This poster was created by designer Matthias Ernstberger at Sagmeister design studio for Neenah Paper. It features an image of a revolver, using an apostrophe for the trigger. The poster is part of a series in which each design celebrates a different typographical element.
measurements
Graphic design involves the use of measurements to specify everything from type sizes and page divisions to format sizes. Understanding how different measurements are used helps to prevent problems in job development and specifications between the different professionals involved in the process.
absolute and relative
Two types of measurement are used in typographic processes: absolute and relative measurements. As these are fundamental to the development of any design project, it is important to understand the differences between them.
absolute measurements
Absolute measurements are measurements of fixed values. For example, an inch is a precisely defined increment within a foot. Equally, points and picas, the basic typographic measurements, have fixed values, such as the 48pt text above. All absolute measurements are expressed in finite terms that cannot be altered.
relative measurements
In typography, many measurements, such as character spacing, are linked to type size, which means that their relationships are defined by a series of relative measurements. Ems and ens, for example, are relative measurements that have no prescribed, absolute size. Their size is relative to the size of type that is being set.
the lower case alphabet
The lower case alphabet, while not being a formal measurement, is used as a guide when setting type. The two alphabets shown left are both set in 18pt type, but the bottom alphabet (set in Century Gothic) has wider characters and extends further across the page than the top alphabet (set in Hoefler). This has an impact on typesetting, as a wider typeface can be set in a wider measure or column width and still be comfortable to read.
the em
The em is a relative unit of measurement, used in typesetting to define basic spacing functions. It is linked to the size of the type so that if the type size increases, so does the size of the em, i.e. the em of 72pt type is 72 points and the em of 36pt type is 36 points. The em defines elements such as paragraph indents and spacing.
the en
An en is a unit of relative measurement equal to half of one em. In 72pt type, for example, an en would be 36 points. Although the names em and en imply a relationship to the width of the capital ‘M’ and ’N’, in reality they are completely unrelated, as the illustrations above demonstrate.
the em dash and en dash
Pictured above are an em dash, en dash and a hyphen. An en dash is half an em dash and a hyphen is one third of an em dash, and so it is smaller than an en dash. The size of all these dashes is relative to the type being set. Em (US) and en (UK) dashes are used to denote nested clauses, and to elide numbers (10—11 and 1975–1981, for example). Hyphens are used in hyphenated words, for example, ‘half-tone’.
the pica
A pica is a unit of measurement equal to 12 points and is commonly used for measuring lines of type. There are six picas (or 72 points) in an inch (25.4 millimeters). This is the same for both a traditional pica and a modern PostScript pica. There are six PostScript picas to an inch.
a note about preferences
Although there is homogenization in the way computer applications use measurements, care needs to be taken. Programs for desktop-publishing work operate with a bias toward points and picas, while drawing programs favor millimeters. However, the preferences of all programs can be changed to work in whatever measurement is most appropriate. Measurement clarity is crucial in many design aspects as ambiguous terms can often be confusing. For example, line weight (here) might be measured as ‘hairline’ and typesetting often uses automatic leading values. However, using these should present no problem, providing you know what is being expressed.
These two dialog boxes are from a drawing program (below), which expresses measurements in millimeters, and a desktop publishing program (bottom), which expresses type in points.
type
Type is the textural element within a design that is typically applied through the use of typeset characters.
letterforms
Sets of typographic characters contain the le...