CHAPTER 5
416
Text
Standard Type 1 Fonts (Standard 14 Fonts)
The PostScript names of 14 Type 1 fonts, known as the
standard 14 fonts,
are as
follows:
Times−Roman
Times−Bold
Times−Italic
Times−BoldItalic
Helvetica
Helvetica−Bold
Helvetica−Oblique
Helvetica−BoldOblique
Courier
Courier−Bold
Courier−Oblique
Courier−BoldOblique
Symbol
ZapfDingbats
These fonts, or their font metrics and suitable substitution fonts, must be avail-
able to the consumer application. The character sets and encodings for these
fonts are listed in Appendix D. The Adobe font metrics (AFM) files for the stan-
dard 14 fonts are available from the ASN Web site (see the Bibliography). For
more information on font metrics, see Adobe Technical Note #5004,
Adobe Font
Metrics File Format Specification.
Ordinarily, a font dictionary that refers to one of the standard fonts should omit
the
FirstChar
,
LastChar
,
Widths
, and
FontDescriptor
entries. However, it is per-
missible to override a standard font by including these entries and embedding the
font program in the PDF file. (See implementation note 62 in Appendix H.)
Note:
Beginning with PDF 1.5, the special treatment given to the standard 14 fonts
is deprecated. All fonts used in a PDF document should be represented using a com-
plete font descriptor. For backwards capability, viewer applications must still pro-
vide the special treatment identified for the standard 14 fonts.
Multiple Master Fonts
The
multiple master
font format is an extension of the Type 1 font format that al-
lows the generation of a wide variety of typeface styles from a single font pro-
gram. This is accomplished through the presence of various design dimensions in
the font. Examples of design dimensions are weight (light to extra-bold) and
width (condensed to expanded). Coordinates along these design dimensions
(such as the degree of boldness) are specified by numbers. A particular choice of
numbers selects an
instance
of the multiple master font. Adobe Technical Note
#5015,
Type 1 Font Format Supplement,
describes multiple master fonts in detail.