AsianFonts by docstoc.hosamea3

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									Adobe Acrobat 5.0
Asian Fonts ReadMe

Viewing, Printing, and Creating PDF files with Asian Fonts
This Readme contains information that supplements the Acrobat 5.0 User Guide with regard to viewing,
printing, and creating PDF files that contain text in the Chinese (Simplified and Traditional), Japanese, or
Korean languages.

Because of their large size, fonts for Chinese, Japanese, or Korean text (hereafter “Asian fonts”) present some
special challenges when viewing, printing, or creating a PDF file. This document describes some of the issues
involved, and provides tips to help you view or create a PDF file containing Asian fonts.

Changes in Asian Font support in Acrobat 5.0
Several enhancements have been made in Acrobat’s support of Asian fonts. The enhancements include:

      • The Distiller can now directly access the information it requires from TrueType fonts installed on the
        system. It no longer depends on the information being present in the PostScript file. Thus, both TrueType
        and PostScript font embedding can be controlled in the same way.

      • TrueType fonts can be embedded on the Macintosh

      • Support for new and larger character sets:
         • Adobe-Japan1-4 for Japanese characters (Technical Note 5078)
           This includes supplement 4 for professional and commercial printing needs
         • Adobe-GB1-4 for Chinese Simplified characters (Technical Note 5079)
           This includes the Chinese character set standard GB18030-2000
         • Adobe-CNS1-3 for Chinese Traditional characters (Technical Note 5080)
           This includes the Hong Kong Supplementary Character Set

            Note: Technical Notes are available at: http://partners.adobe.com/asn/developer/technotes.html

      • Support for OpenType fonts


Viewing a PDF file with Asian Fonts
If all fonts in a PDF file are embedded then the PDF file can be viewed on any operating system with any
language version of Acrobat 4.0 or later. Note: Acrobat 3.0 or before will not display embedded Asian fonts
correctly.

When fonts are embedded in the PDF, all the information required to display the PDF is contained in the PDF
itself. This is the recommended method for creating PDF files that are universally viewable. However, depending
on the number of fonts embedded and the amount of text, PDF files with embedded Asian fonts may become
large. If fonts are not embedded then there are 2 situations:



Copyright 2001 Adobe Systems Inc.                     1                                                        1/23/01
1. A localized version of Acrobat or Acrobat Reader on a native system will automatically install all the font
   resources required to display a PDF in that language. For example, if you install Acrobat 5.0J on a Japanese
   system, it will automatically display Japanese PDFs with no further installation required.

2. In all other cases you will need to specially install additional Asian fonts. From the Acrobat CD you can
   install Asian fonts by doing a custom installation. On Windows, choose “Custom” and then “Asian
   Language Support.” On the Macintosh, choose “Custom Install” and then one or more of the choices under
   “Asian Language Files.” If you are using the Acrobat Reader, you may download a “Font Pack” for any of
   the four supported Asian languages from http://www.adobe.com/acrobat. After installing a font pack, any
   language version of the Reader will be able to view an Asian language PDF.


Printing a PDF file with Asian Fonts
If the PDF file contains embedded fonts, then Acrobat will automatically use the embedded fonts when printing
the PDF file. The fonts will print correctly on any PostScript Level 2 or PostScript 3 device, whether Roman or
Asian.

For PDF files that do not have embedded fonts there are three options for printing:

1. Print as Image: This option rasterizes (creates bitmaps of) fonts available on your workstation, and
   downloads these bitmaps to the printer. It essentially downloads a picture of what you see on the screen to
   your printer, and will always work as long as you can view the PDF file correctly. However, as it does not
   take advantage of any font processing on the printer, the print job may be large or take a long time. This is
   the default option for non-PostScript printers, and is available for PostScript printers as an option in the
   print dialog box.

2. Download Asian Fonts: This option sends down the outlines of the Asian fonts that you have on your
   workstation to the PostScript printer. This option will work on any PostScript Level 2 or PostScript 3 device,
   whether Roman or Asian. This option should always be checked if you do not have Asian language fonts
   installed on your PostScript printer. The print job may be smaller and faster than Print as Image. This
   option is available only for PostScript printers, and is located under the PostScript options of the print dialog
   box.

3. Default (Download Asian Fonts and Print as Image unchecked): In this option, Acrobat will send only
   references to Asian fonts to the PostScript printer (unless, of course, the fonts are embedded). This will print
   correctly only if you are printing to a PostScript printer that has Asian language fonts resident on the printer.
   If the font referenced in the PDF file is not found on the printer, a substitute font in the same language will
   be tried. If such a font is not available, then Courier will be used and the Asian text will be meaningless.




Copyright 2001 Adobe Systems Inc.                      2                                                       1/23/01
Creating a PDF file with Asian Fonts
Font embedding rights
Both TrueType fonts and CID fonts may contain information that defines whether the font can be embedded in
a document. The Acrobat Distiller checks for this information, when available, and will not embed a font in a
PDF document if the font does not allow it.

For additional information on font embedding rights, please see Adobe Technical Note 5641 at
http://partners.adobe.com/asn/developer/technotes.html and the OpenType font information at:
http://partners.adobe.com/asn/developer/opentype/

Embedding Different Font Types:

TrueType fonts
TrueType fonts can be selectively embedded in a PDF file on either Windows or Macintosh. Embedding can be
controlled using the dialog box at Job Options -> Fonts.

PostScript Fonts:
PostScript fonts are also known as ATM fonts. Adobe Type Manager (ATM) is a program that will rasterize fonts
that you have installed on your system either for display or printing.

CID-Keyed and OpenType PostScript fonts can be can be selectively embedded in a PDF file on either Windows
or Macintosh. Embedding can be controlled using the dialog box at Job Options -> Fonts. An older type of
PostScript font, called OCF-format, cannot be embedded. See below for additional platform-specific
information on Distilling a PostScript file that refers to OCF-format PostScript fonts.

Distilling PDF files on Windows

Using TrueType fonts:
Acrobat 5.0 installs the latest PostScript printer driver for your operating system and creates a printer named
“Acrobat Distiller”. Please use these drivers for best results when creating a PostScript file that will be converted
to a PDF file. To create PDF files with embedded TrueType fonts, the driver must be set to not download
TrueType fonts in the PostScript stream or to download TrueType fonts as Type42. The default and preferred
option is to check the following: Acrobat Distiller printer -> Preferences -> Adobe PDF Settings -> Do not send
fonts to Distiller

Using Proportional Double Byte TrueType fonts:
Proportional double byte fonts were introduced in Windows 95, and allow even double-byte characters to have a
unique width or height. This type of font is not supported on other platforms such as Macintosh and Unix. To
maintain document portability, the PDF specification requires that all non-embedded double-byte glyphs be
full-width (mono-spaced). In this way, a PDF file that has only references to a font can be displayed correctly by
using substitute fonts when displayed on systems that do not have proportional double byte fonts.

On Windows, where such proportional double byte fonts (e.g. MS P Mincho) are common, you can create a
PDF file that can be successfully viewed anywhere by embedding these fonts.


Copyright 2001 Adobe Systems Inc.                       3                                                        1/23/01
Using PostScript Fonts:
For Distiller to correctly process an Asian font, the font needs to be preserved in the PostScript stream, and not
converted to bitmaps by ATM. You can prevent ATM from rasterizing a font by telling the PostScript driver that
the printer for which it is generating PostScript has the font installed. In this case, the driver will not call upon
ATM to rasterize, and the font will be preserved. To the PostScript driver, the Acrobat Distiller is actually a
PostScript printer. The driver will check the PPD file of the printer (Adist5*.ppd) to see if the font is “installed”
on the printer. If the PPD file lists the font as being installed, then the PostScript driver will place a reference to
the font in the PostScript file, rather than a bitmap.

Using PDFWriter on Windows
Starting with Acrobat 5.0, PDFWriter is no longer a recommended way of creating a PDF file. However,
PDFWriter is still available only on the Windows platform as an optional component. Adobe recommends using
the Distiller for better PDF creation results.

From office productivity applications when Asian font embedding is not required, creating PDF from the
PDFWriter is generally straightforward. The PDFWriter works just like a printer driver. If the authoring
application can correctly display a font and print it to a printer, then the PDFWriter can access the information it
needs to create a correct PDF file. PDFWriter requires a native operating system.

PDFWriter does not support embedding of Asian fonts in a PDF file. In addition, for PostScript fonts, Adobe
Type Manager (ATM) is required.

Distilling PDF files on Macintosh

MakeCID utility and OCF-format PostScript fonts
The Distiller cannot directly process OCF-format PostScript fonts. Rather, Distiller relies on the MakeCID utility
to create a CID font with the same properties as the OCF font. This special CID font is used for distilling a
PostScript file that has a reference to an OCF font. OCF-format fonts cannot be embedded.

The Distiller needs information about the width of Roman characters in a Japanese font to create a correct PDF
file. The Distiller and PDF itself assume that all double-byte (i.e. non-Roman) characters are mono-spaced
(unless the characters are embedded).

MakeCID extracts the width information of the Roman characters from OCF fonts and creates a special “width-
only” CID font that has the width information required for Distilling. The width-only CID fonts do not contain
character outlines and are not useful to any application except for the Distiller. For the Distiller to use the
“width-only” CID fonts, they must be located in the Distiller:Data:PSdisk:Resource:CIDFont folder.

Acrobat comes with “width-only” CID fonts and compatible fonts (see below) for all Chinese, Japanese and
Korean fonts in the Adobe Type Library and all Macintosh and Windows Chinese, Japanese and Korean system
fonts.

The MakeCID utility runs only on the Macintosh, and extracts information only from Macintosh Asian fonts.
However, the resulting width-only CID fonts may be moved to a Windows-based Distiller. This will allow the
Windows Distiller to distill PostScript files created on the Macintosh that have references to 3rd-party Asian
fonts.

For the Windows Distiller to use the width-only CID fonts the required fonts should be copied from the
following folders in the Macintosh Distiller folder:

Copyright 2001 Adobe Systems Inc.                       4                                                        1/23/01
Data:psdisk:Resource:CIDFont and
Data:psdisk:Resource:CompatibleFont

to the corresponding folder on the Windows Distiller:

Data\psdisk\Resource\CIDFont and
Data\psdisk\Resource\CompatibleFont

The MakeCID utility is run automatically whenever a new font has been added to the Macintosh font folder and
Distiller launched. MakeCID will not run automatically if you are on a Roman operating system without an
Asian Language Kit. You may also run it manually by launching it from the Xtras folder within the Acrobat
Distiller folder.

Using PostScript and TrueType Fonts:

To correctly Distill a file, the PostScript file must contain references to the fonts used, so ATM and the MacOS
must be prevented from rasterizing the characters before downloading. This can be done in the print dialog box
for the Macintosh AdobePS driver. From your application, choose the Print command and then the Create
Adobe PDF printer. Under PostScript Settings -> Font Inclusion choose:

1. None (i.e. no bitmaps are downloaded)
2. All but fonts in PPD file. Ensure that the fonts you want in the PDF file are in the Distiller PPD file. When
   MakeCID converts an OCF font to CID, it will update the PPD file to include the new CID font. Please make
   sure to select your printer in the Chooser, and then set up the printer using the new PPD file.

Adobe Type Composer Japanese Fonts
The Adobe Type Composer utility enables you to create a composite (or re-arranged) Japanese font that may use
different fonts for different types of characters, one font for Kanji and a different font for Kana or Gaiji. When
you create an ATC font and place it in your Macintosh system font folder, MakeCID will automatically run and
create a “width-only” CID font and update the PPD.

By creating an ATC font with Gaiji rows, you can write documents that contain Gaiji characters as if they were
part of the original font. When distilled, the Gaiji are automatically embedded. Thus even a document that
contains Gaiji will display and print correctly on any system.


======================================================================
Adobe, the Adobe logo, Acrobat, the Acrobat logo, Acrobat Capture, Distiller, Adobe Type Manager, ATM,
Illustrator, PageMaker, Photoshop, and PostScript are trademarks of Adobe Systems Incorporated. Microsoft,
Windows, and Windows NT are either registered trademarks or trademarks of Microsoft Corporation in the U.S.
and/or other countries. Apple, Macintosh, Mac, Power Macintosh, and TrueType, are trademarks of Apple
Computer, Inc. registered in the U.S. and other countries. All other trademarks are the property of their
respective owners.

Copyright 2001 Adobe Systems Incorporated. All rights reserved.
=======================================================================




Copyright 2001 Adobe Systems Inc.                     5                                                      1/23/01

								
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