PDF Output
PDF Output
PDF output is a standard function of Rainbow PDF Server Based Converter V4.0. The PDF versions that can be output are as follows:
Rainbow PDF Server Based Converter V4.0 outputs PDFs with the following features:
PDF/A-1 is defined by ISO 19005-1:2005 and it is the specification intended to be suitable for long-term preservation of electronic documents based on PDF1.4 specification. With Rainbow PDF Server Based Converter V4.0, it's possible to output the following versions of PDF/A:
The following shows the main features for PDF/A:
| PDF/A-1b:2005 | |
|---|---|
| All fonts must be embedded. | Yes |
| Files must be tagged. | No |
| Files must include XMP metadata | Yes |
| Files may not include encryption | Yes |
| Files may not include LZW Compression | Yes |
| Files may not include Transparent images | Yes |
| Files may not refer to the external content | Yes |
| Files may not include JavaScript | Yes |
In PDF/A, it is required that all fonts be embedded; if a font cannot be embedded due to security restrictions or other issues, a PDF/A will not be generated. Also, the embedding of the color profile is indispensable with PDF/A, so when specifying the output intent, only the URL specification of the color profile is effective.
Most information (including embedding of fonts etc.) is adopted precisely and user settings are ignored.
XMP metadata is automatically generated from the document information of PDF. Embedding additional information is not available in Rainbow PDF Server Based Converter V4.0.
Adobe Type1 fonts (including Adobe Standard 14 Fonts), and TrueType fonts (including OpenType fonts with TrueType Outlines), OpenType fonts (PostScript Outline) and Macintosh TrueType font data fork suitcase are supported for PDF output. Other font formats are not supported. For more details, refer to the "Fonts".
Rainbow PDF Server Based Converter V4.0 requires that the fonts, which are specified in documents, are installed on your system in order to use them correctly. Please refer to Windows help or follow the installation instructions attached to the fonts for the method of installing the font in the Windows version. The font placed aside from the font folder can be outputted to PDF in the Windows versoin. At this time, you need to specify some setting in the font construction file. However, the font cannot be displayed in GUI.
These 14 Adobe Type1 fonts are called Standard 14 Fonts in PDF.
It is not necessary to prepare an AFM (Adobe Font Metrics) file, even when using an Adobe Type1 font (except for these Standard 14 Fonts). The glyph names of Adobe Type1 fonts maps to character codes (Unicode) of formatting data according to the AGL (Adobe Glyph List) specification. The glyph with a name that is not defined in AGL is not output. See also Unicode and glyph mapping using the .AFM file for more details about .AFM file.
| CAUTION: | When the PDF includes a transparent image that is displayed with Adobe Acrobat/Reader, the character might appear somewhat bolder. This is a known problem of Adobe Acrobat/Reader. |
|---|
The following character sets are supported:
Encoding of all characters is processed as Unicode within Rainbow PDF Server Based Converter V4.0. In the case of Chinese, Japanese, Korean, (CJK), Rainbow PDF Server Based Converter V4.0 maps the Unicode to glyph in each CJK character sets by using the following CMap.
The characters that do not belong to the above character sets are embedded in the PDF by getting the glyphs from the font files. This process is done only for TrueType fonts.
Embedding font makes it possible to display PDF files even in the environment where there are no fonts.
In the default setting of TrueType font processing, only the outline of glyphs that are not defined by CMap is embedded. In cases where embedding TrueType fonts are prohibited by a font vendor, error occurs and processing stops. This error can be avoided by replacing it with a white space and output PDF. You can also specify the option that all glyphs of a font are to be embedded whether the character is defined by CMap or not.
In the default setting of Adobe Type1 font processing, only the outline of a font that has font specific encoding is embedded. The option to embed all glyphs of a font can also be specified whether the font has standard or font specific encoding.
For more information about supported graphic images, refer to the "Graphics".
The following vector images outputted to PDF as vector primitives are replaced with PDF operators:
The raster images attached in a MS Office document are stored in different formats. In Rainbow PDF Server Based Converter V4.0, when the image is the format which can be embedded directly into PDF, the image extracted from the original document is embedded. Otherwise, it is embedded after converting into JPEG etc. The image format that is not able to convert will be disregarded.
The raster images which can be embedded directly in a PDF are as follows:
These are the following restrictions: