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i18n_printing(5)
NAME
i18n_printing - Introduction to internationalized printing support
DESCRIPTION
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
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
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 *ys,yt
flocale,line,odldb,odlstyle,*plocale
dl510kaof *ys,yt
flocale,line,odldb,odlstyle,*plocale
la280of *ys,yt
flocale,line,odldb,odlstyle,*plocale
la380cbof *ys,yt
flocale,line,odldb,odlstyle,*plocale
la380kof *ys,yt
flocale,line,odldb,odlstyle,*plocale
la380of *ys,yt
flocale,line,odldb,odlstyle,*plocale
la84of *ys,yt
flocale,line,odldb,odlstyle,*plocale
la86of *ys,yt
flocale,line,odldb,odlstyle,*plocale
la88cof *ys,yt
flocale,line,odldb,odlstyle,*plocale
la88of *ys,yt
flocale,line,odldb,odlstyle,*plocale
la90of *ys,yt
flocale,line,odldb,odlstyle,*plocale
ln03jaof *ys,yt
flocale,line,odldb,odlstyle,*plocale
ln05jaof *ys,yt
flocale,line,odldb,odlstyle,*plocale
ln10jaof *ys,yt
flocale,line,odldb,odlstyle,*plocale
thailpof line,onehalf,spcom,tacdata,plocale *yp
__________________________________________________________________
POSTSCRIPT OUTLINE FONTS
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)
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:
cp382dof
For the CP382D Traditional Chinese dot-matrix printer
controller
la88cof For the LA88-C Simplified Chinese dot-matrix printer
la380cbof
For the LA380-CB Simplified Chinese graphic line printer
· Japanese:
la84of
For the LA84-J dot-matrix printer
la86of
For the LA86-J dot-matrix printer
la88of
For the LA88-J dot-matrix printer
la90of
For the LA90-J dot-matrix printer
la280of
For the LA280-J dot-matrix printer
la380of
For the LA380-J graphic line printer
ln03jaof
For the LN03S-JA laser printer
ln05jaof
For the DEClaser 2300 laser printer
ln10jaof
For the DEClaser 2400 laser printer
· Korean:
la380k 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..
CODESET CONVERSION
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
cp382dof filter
DEC Hanyu codeset (zh_TW.dechanyu locale)
la88cof and la380cbof filters
DEC Hanzi codeset (zh_CN.dechanzi locale)
· Japanese printer codesets and plocale values
ln82rof filter
DEC Kanji codeset (ja_JP.deckanji locale)
la84of, la86of, and la88of filters
DEC Kanji codeset (ja_JP.deckanji locale)
la90of, la280of, and la380of filters
DEC Kanji codeset (ja_JP.deckanji locale)
ln03jaof, ln05jaof, and ln10jaof filters
DEC Kanji codeset (ja_JP.deckanji locale)
ln82rof filter
Super DEC Kanji codeset (ja_JP.sdeckanji locale)
ln82rof_SJIS filter
Shift JIS codeset (ja_JP.SJIS locale)
· Korean printer codeset and plocale values
la380k filter
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
Sung-Light-CNS11643 font
DEC Hanyu codeset (zh_TW.dechanyu locale)
Hei-Light-CNS11643 font
DEC Hanyu codeset (zh_TW.dechanyu locale)
Hei-GB2312-80 font
DEC Hanzi codeset (zh_CN.dechanzi locale)
XiSong-GB2312-80 font
DEC Hanzi codeset (zh_CN.dechanzi locale)
· Korean font codeset and plocale value
Munjo font
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.
SEE ALSO
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
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Index for
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Alphabetical
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