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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 will be 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: 

The point size of a font is defined as the distance from the top of the tallest character in the font to the bottom of 

the lowest character in the font. Due to the definition of point size, different fonts printed at the same point size 

may appear quite different in size. This is because there are other font parameters that affect how the font looks. 

However, the point size of a font is an excellent specification of the relative size of a font. The following examples 

illustrate two very different proportional fonts at 14 point: 

The printer uses both bitmapped and scalable fonts. 
Bitmapped fonts are stored in print memory as predefined patterns of bits that represent a typeface at a specific size, 

style, and resolution. The following illustration shows an example of a character from a bitmapped font. 

Bitmapped fonts are available in different type styles and point sizes as downloadable fonts.  
Scalable fonts (also called outline fonts) are stored as computer programs that define the outlines of the characters 

in the font. Each time you print characters from a scalable font, the printer creates a bitmap of the characters at the 

point size you choose and saves it temporarily in print memory.  

Understanding Fonts