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i18n_printing(5)
Contents
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i18n_printing - Introduction to internationalized printing
support
The operating system's optional subsets with worldwide
support software provide special features to meet requirements
for printing nonASCII text. These features include:
Print filters for codesets other than ASCII. Among these
are generic PostScript print filters (pcfof and wwpsof)
that can be used with a variety of printers. Outline and
bitmap fonts for different languages Software on-demand
loading (SoftODL) of user-defined character fonts for
Asian bitmap printers Codeset conversion between source
file and printer
This reference page describes these features and how to
enable them.
GENERIC PRINT FILTERS [Toc] [Back] Unlike the print filters discussed in the following section,
generic print filters are neither printer specific
nor limited to printers from a particular vendor.
The pcfof generic print filter operates on both text and
PostScript input files and supports ANSI, PCL, and multilanguage
PostScript printers. Although fonts required for
the print job must reside on the printer, the filter does
include support for codeset conversion. See the pcfof(8)
reference page for information about setting up a printer
with this filter.
The wwpsof generic print filter operates on PostScript
files generated from CDE applications or text files. The
filter uses settings in a printer customization file (PCF)
to find the font glyphs for local language characters and
then embeds the font data in the PostScript file sent to
the printer. The filter uses PostScript outline fonts, if
installed on the local system, or bitmap fonts, which the
filter obtains through a font server. This means that
print jobs containing characters other than English do not
have to be sent to printers where supporting fonts are
resident. Furthermore, because this filter works as a font
server client, local language bitmap fonts do not have to
reside on the local system. The wwpsof filter verifies
that the characters being printed are valid in the current
locale and uses the locale setting to find appropriate
fonts. Therefore, locale must be set appropriately for
print jobs handled by this filter.
The wwpsof filter requires that the printer support
PostScript Level 2 (or higher) or PostScript Level 1 with
the composite font extension. See the wwpsof(8) reference
page for information about setting up a printer with this
filter. See xfs(1X) for information on setting up a font
server.
PRINTER-SPECIFIC PRINT FILTERS [Toc] [Back] The worldwide support software provides additional text
and PostScript print filters for local language support.
These filters are sensitive to the user's locale setting
and include country-specific features, such as space compensation
mode for Thai printing.
The following list names the print filters and the printers
with which they are used. Note that text filters do
not support PostScript output but PostScript filters can
support both text and PostScript output. cp382dof, a text
filter for the Traditional Chinese (Hanyu) CP832D printer
dl510kof, a text filter for the Korean DL510 printer
la280of, a text filter for the Japanese LA280 printer
la380cbof, a text filter for the Simplified Chinese
(Hanzi) LA380CB printer la380kof, a text filter for the
Korean LA380K printer la380of, a text filter for the
Japanese LA380 printer la84of, a text filter for the
Japanese LA84 printer la86of, a text filter for the
Japanese LA86 printer la88cof, a text filter for the Simplified
Chinese (Hanzi) LA88C printer la88of, a text filter
for the Japanese LA88 printer la90of, a text filter
for the Japanese LA90 printer ln03jaof, a text filter for
the Japanese LN03JA printer ln05jaof, a text filter for
the Japanese LN05JA printer ln10jaof, a text filter for
the Japanese LN10JA printer ln82rof, a PostScript filter
supporting the DEC Kanji codeset for the LN82R printer
ln82rof_sdeckanji, a PostScript filter supporting the
Super DEC Kanji codeset for the LN82R printer
ln82rof_SJIS, a PostScript filter supporting the Shift JIS
codeset for the LN82R printer thailpof, a text (generic
Thai bitmap) filter for the Epson 1050+ printer
Note
The Chinese text print filters, which print either Hanzi
or Hanyu characters, can automatically convert between the
two sets of characters. Conversion is enabled when either
the flocale value (set in the /etc/printcap file, lpr command,
or lp command) or the user's locale setting differs
from the printer locale value. See printcap(4) and lpr(1)
for more information about setting these values.
A reference page exists for each print filter; however,
reference pages for the ln82rof, ln82rof_sdeckanji, and
ln82rof_SJIS filters are available only in Japanese.
The following table lists for printer-specific text filters
the characteristics that can or must be defined in
the /etc/printcap file. An asterisk precedes keywords
(defined through the ya symbol) or other symbols that are
mandatory for the filter. Symbols are described in the
printcap(4) reference page. The keyword assignments for
the ya symbol can also be specified as keyword assignments
for the -A option on the lpr command line. See the lpr(1)
reference page for keyword descriptions.
------------------------------------------------------------------
Text Filter Option Keywords for ya Symbol Other Symbols
------------------------------------------------------------------
cp382of flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
dl510kaof flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
la280of flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
la380cbof flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
la380kof flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
la380of flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
la84of flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
la86of flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
la88cof flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
la88of flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
la90of flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
ln03jaof flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
ln05jaof flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
ln10jaof flocale,line,odldb,odlstyle,*plo- *ys,yt
cale
thailpof line,onehalf,spcom,tacdata,plocale *yp
------------------------------------------------------------------
POSTSCRIPT OUTLINE FONTS [Toc] [Back] The worldwide support software provides a large set of
outline fonts for printing files in various languages.
Depending on how many local language support subsets are
installed on your system, there may be more than 150 outline
fonts available.
Fonts are available according to codeset. To identify
which fonts are available for the codeset of the file you
want to print, see the section on fonts in the reference
page for that codeset. For example, to find out which
outline fonts are available for DEC Hanyu, refer to the
section on fonts in dechanyu(5).
Note that Tru64 UNIX does not include PostScript outline
fonts for the ISO8859-4 (Lithuanian) and Japanese codesets.
SOFTWARE ON-DEMAND FONT LOADING (SOFTODL) [Toc] [Back] SoftODL is a mechanism through which a terminal or a
printer can download the relevant bitmap font information
for a user-defined character (UDC) at the time the character
needs to be displayed or printed. The local language
bitmap printers for multibyte languages (specifically for
Japanese, Chinese, and Korean) can support this feature.
See odl(5) for more details on the SoftODL mechanism.
The following list names, by language, the print filters
and printers that support the SoftODL mechanism: Chinese:
For the CP382D Traditional Chinese dot-matrix printer controller
For the LA88-C Simplified Chinese dot-matrix
printer For the LA380-CB Simplified Chinese graphic line
printer Japanese: For the LA84-J dot-matrix printer For
the LA86-J dot-matrix printer For the LA88-J dot-matrix
printer For the LA90-J dot-matrix printer For the LA280-J
dot-matrix printer For the LA380-J graphic line printer
For the LN03S-JA laser printer For the DEClaser 2300 laser
printer For the DEClaser 2400 laser printer Korean: For
the LA380K graphic line printer
To enable SoftODL printing in these printers, the system
manager can define the ys symbol in the /etc/printcap
file. The value 256 is a safe value for all the printers;
however, printer-specific values are found in the reference
pages for the print filters.
The system manager can also set the default SoftODL
database, font style, and font size by defining the odldb
and odlstyle keywords for the ya symbol. Users can override
these defaults including these keyword assignments in
the argument to the -A option of the lpr command. Refer
to printcap(4) and lpr(1) for more information on defining
symbols and assigning values to keywords..
For languages such as Japanese, Korean and Chinese, which
require multibyte codesets, there is sometimes more than
one codeset in common use for the language. The encoding
scheme used by a local language printer cannot match all
the codesets in use for a particular language. The worldwide
support software includes a codeset conversion mechanism
to print text files that have a different encoding
scheme from the one used by the printer. Refer to
i18n_intro(5) for an explanation of codesets, and
iconv_intro(5) for introductory information on codeset
conversion.
For printer-specific filters, codeset conversion can be
enabled in the /etc/printcap file or by using the lpr command.
In the /etc/printcap file, the plocale and flocale
keywords are defined for the ya symbol to specify the
codeset conversion used by default. The plocale keyword
defines the locale (and indirectly, the codeset) of the
printer, and the flocale keyword defines the locale (and
indirectly, the codeset) of the text file. When using the
lpr command, which overrides any settings defined in the
/etc/printcap file, the same keywords are specified in the
argument to the -A option. See printcap(4) for more information
on defining the ya symbol, and lpr(1) for information
on using the -A option.
If the flocale keyword is not defined by the user, files
to be printed are assumed to use the same codeset as the
one for the user's current locale. If the plocale keyword
is not specified to indicate the locale of the printer,
the locale is assumed to be POSIX. If codeset conversion
is not possible given the current combination of file and
printer locale, the file is printed as is.
To print files using multibyte fonts that are built into
the printer, the value assigned to the plocale keyword
must match the codeset of the builtin fonts. If fonts are
downloaded at print time through the font-faulting mechanism,
the plocale value should match the font that is
downloaded for the print job.
The following list specifies by language the print filter
codeset and plocale value for printers with builtin fonts:
Chinese printer codesets and plocale values DEC Hanyu
codeset (zh_TW.dechanyu locale) DEC Hanzi codeset
(zh_CN.dechanzi locale) Japanese printer codesets and plocale
values DEC Kanji codeset (ja_JP.deckanji locale) DEC
Kanji codeset (ja_JP.deckanji locale) DEC Kanji codeset
(ja_JP.deckanji locale) DEC Kanji codeset (ja_JP.deckanji
locale) Super DEC Kanji codeset (ja_JP.sdeckanji locale)
Shift JIS codeset (ja_JP.SJIS locale) Korean printer codeset
and plocale values DEC Korean codeset (ko_KR.deckorean
locale)
The following list specifies by language the codeset and
associated plocale values for printers when fonts are
downloaded at print time: Chinese font codeset and plocale
values DEC Hanyu codeset (zh_TW.dechanyu locale) DEC Hanyu
codeset (zh_TW.dechanyu locale) DEC Hanzi codeset
(zh_CN.dechanzi locale) DEC Hanzi codeset (zh_CN.dechanzi
locale) Korean font codeset and plocale value DEC Korean
codeset (ko_KR.deckorean locale)
The wwpsof filter also does codeset conversion, if necessary.
For example, the filter converts characters in Unicode
format to characters in codesets for which fonts are
available on the system. However, wwpsof requires only the
locale setting for the print job to do this type of codeset
conversion. The filter does not require information
about which codeset the printer supports.
Commands: lpr(1), lprsetup(8)
Files: printcap(4)
Others: i18n_intro(5), iconv_intro(5), l10n_intro(5),
odl(5)
Writing Software for the International Market
System Administration
i18n_printing(5)
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