Lexmark W810 用户指南

Understanding fonts

Some fonts combine several weight and style modifications; for example, Helvetica Nar-
row Bold Italic. A group of several weight and style variations of a single typeface is called 
a 

typeface family. Most typeface families have four variations: regular, italic, bold, and bold 

italic. Some families have more variations, as the following illustration for the Helvetica 
typeface family shows:

The size of a font is specified as either a pitch or point size, depending on whether the 
font is fixed space or proportional.

In 

fixed space fonts, each character has the same width. Pitch is used to specify the size 

of fixed space fonts. It is a measure of the number of characters that will print in one hori-
zontal inch of type. For example, all 10-pitch fonts print 10 characters per inch (cpi) and all 
12-pitch fonts print 12 cpi.

In

 proportional (or typographic) fonts, every character can have a different width. Since 

proportional fonts have characters with different widths, the font size is specified in point 
size, not pitch. 

Point size refers to the height of the characters in the font. A point is 

defined as 1/72 inch. The characters in a font printed at 24 point are twice as large as the 
characters in the same font printed at 12 point. The following illustration shows samples of 
a font printed in different point sizes:

48 point 

36 point

24 point

          

18 point

        12 point       10 point