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HELIOS PDF HandShake UB User manual |
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PDF HandShake checks the security settings in a PDF document. All documents with an unchecked "Require a password to open the document" option are supported, even if other security options are specified.
To find out whether or not a document is protected by security settings, use the Acrobat Document Security window, as shown in Fig. 1.
"Printing" must be both "Allowed" and "High Resolution" for the document. Otherwise, the menu items PDF HandShake Print and PDF HandShake Export will be grayed out, and OPI layout generation will be disabled for this particular file.
A password to open the document - if there is one - must be removed in this way as well. Otherwise the document cannot be handled by PDF HandShake.
Important: Changing settings require knowledge of the Security Password. Thus, for proper operation, refer to the Acrobat documentation.
Whether you print composite or separations from your original application (before generating PDF) depends on your workflow and requirements. For example, if you wish to include trapping information in your PDF file, you may be forced to print separations. This is due to the fact that some applications such as QuarkXPress do not include trapping information in the PostScript output if you print composite.
Pre-separated PDF documents are automatically recognized by the "pdfprint" command line program and by the PDF HandShake Acrobat plug-ins. When printing or exporting pre-separated documents with PDF HandShake, the following rules apply:
- Print Separations is enabled.
- The options In-RIP Separations, Convert Spot To Process and Overprint Black are disabled.
- Color matching (PDF RGB/CMYK Profiles) is disabled.
- The halftone settings for each color are applied to the pages with the corresponding plate colors.
- The "layout" and "pdftoeps" command line programs generate DCS files with default composite previews, which are raster based. The "layout" program creates single-file DCS-style layout images while the "pdftoeps" program creates DCS-1 multi-file images, or DCS-2 single-file images. The plate file suffixes for CMYK will be .C, .M, .Y, and .K. Spot color plate files will be assigned other suffixes, namely letters so far unused, in alphabetical order. The suffix does not have any relation to the name of the spot color.
- Printing separations and printing composite of documents containing placed layouts of pre-separated PDF files to an OPI printer queue with image replacement is fully supported for all output devices, except for PrintPreview.
Important: Composite printing of documents containing placed layouts of pre-separated PDF files to a PrintPreview queue will lead to blank picture boxes in the preview.
You may run PDF HandShake in demo mode. Then, our server fonts will only be available for OPI layout generation - they cannot be used for printing. The only exception is the "Courier" font, this font is always fully accessible.
For background information about the different types of fonts and the way they are handled by PDF HandShake, please see A 4 "About fonts".
Compressed PDF documents and compressed images in PDF documents can be handled without problems. PDF HandShake recognizes all common modes of compression like JPEG, JPEG2000, JBIG2, CCITT, ZIP, etc.
Note that if you are using ImageServer and transform a PDF file into EPSF (either high-res EPSF or layout), this new EPSF file may - depending on server settings - not be compressed.
Spot colors in PDF files are recognized. PDF HandShake even offers a Spot To Process option that lets you convert all spot colors in a PDF file into CMYK, when printing separations. This option is available if you print directly from your server platform, using the "pdfprint" command, or if you print from a Macintosh client using our Acrobat or Adobe Reader print plug-in.
PDF files can contain several images and thus can contain different color spaces (like CMYK or RGB) in one document. Therefore, for correct color matching, these PDF files should have two source profiles - one for the RGB objects and one for the CMYK objects in the document. If you are using ImageServer you can, with the "Tagger" program, assign profiles to your PDF documents. Otherwise, you can define server-wide defaults using HELIOS Admin, or tag PDF documents temporarily before printing. Our Acrobat print plug-in provides pop-up menus for that purpose, and the "pdfprint" program also offers the required parameters (see 8.1 "pdfprint").
If you receive PDF files from a customer you may use the Get Info option on a Macintosh to check whether these files already come with profile information that have been "tagged" to the files under ImageServer. If so, the names of the profiles will be displayed in the field of the Info box (Fig. 2). ImageServer users may check profile information with the "Tagger" program.
Note: Currently the profile information feature is not supported by Mac OS X clients.
The handling of color data transformations differs depending on whether ImageServer is installed on your server or not. If you are using ImageServer, please read the respective chapters in the ImageServer manual for details about color data transformations.
On principle, you activate the color matching module explicitly by selecting an ICC printer profile on the desired printer queue (this is described in 5.2.2 "Printer queue settings for PDF"). If you do so, all colors in your PDF files will be transformed into the printer's color space during printing.
If you do not select a printer profile, color data transformations might be performed "behind the scenes" - depending on whether you print composite or separations:
- Printing composite:
All color spaces in your PDF files remain as they are. The color matching module will not interfere.- Printing separations:
Indirect color matching will be performed. Non-CMYK color spaces in your PDF files (like CIE-Lab, RGB, Indexed colors) will automatically be transformed into CMYK. The server will use the "CMYK standard" for the color data transformations. By default, this standard is Euroscale - you can only change it into SWOP if you are using ImageServer.Note: Do not remove the "ICC-Profiles" volume from the server, because this would disable indirect color matching.
PPD files must be selected carefully to guarantee correct output on the printing device. You can select a PPD file with HELIOS Admin when setting up a printer queue and you can select a PPD file on your Macintosh client when choosing a printer. These two PPD files should be identical. The Acrobat PDF HandShake plug-in checks this for you and will display a warning if they are not identical.
Important: The two PPD files are only checked by their name but not by their content. In order to guarantee optimum printing results, ensure that PPD files with the same name do indeed have the same content.
The "ICC-Profiles" volume, which is automatically created during the HELIOS software installation, contains two ICC printer profiles for Epson Stylus Color desktop printers, i.e. for non-PostScript devices. With PDF HandShake, you print to an HELIOS printer queue, and non-PostScript output devices are not supported. However, HELIOS PrintPreview customers can use these Epson Stylus Color profiles for proof printing preview files on an Epson ink-jet printer. See the respective chapter in the PrintPreview manual for more information about this issue.
Page size problems when distilling EPSF files
We recommend using Create PDF Server for PDF generation. The Distiller may have problems recognizing the page size of EPSF input files. See Fig. A-5 in A 1 "Create PDF files using Acrobat Distiller" and the explanation about the Use Prologue.ps and Epilogue.ps option.
| © 2005 HELIOS Software GmbH |
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