Transfer functions are used for artistic effect and to adjust for the specifications of a specific output device. For example, a file that is intended for output on a particular imagesetter may contain transfer functions that compensate for the dot gain that is inherent with that printer.
Black generation calculates the amount of black to be used when you are trying to reproduce a particular color. Undercolor removal UCR reduces the amount of cyan, magenta, and yellow components to compensate for the amount of black that the black generation added.
Because it uses less ink, UCR is generally used for newsprint and uncoated stock. Preserve: Retains the transfer functions that are traditionally used to compensate for dot gain or dot loss that may occur when an image is transferred to film. Dot gain occurs when the ink dots that make up a printed image are larger for example, due to spreading on paper than in the halftone screen; dot loss occurs when the dots print smaller.
With this option, the transfer functions are kept as part of the file and are applied to the file when the file is output. Apply: Does not keep the transfer function but applies it to the file, which changes the colors in the file. This option is useful for creating color effects in a file. By default, this option is selected for new settings. Remove: Removes any applied transfer functions. Remove applied transfer functions unless the PDF file will be output to the same device that the source PostScript file was created for.
Preserve Halftone Information: Retains any halftone information in files. Halftone information consists of dots that control how much ink halftone devices deposit at a specific location on the paper. Varying the dot size and density creates the illusion of variations of gray or continuous color. For a CMYK image, four halftone screens are used, one for each ink that is used in the printing process.
In traditional print production, a halftone is produced by placing a halftone screen between a piece of film and the image, and then exposing the film. Electronic equivalents, such as in Adobe Photoshop, let users specify the halftone screen attributes before they produce the film or paper output. Halftone information is intended for use with a particular output device. In a PostScript file, DSC comments contain information about the file such as the originating application, creation date, and page orientation.
They also provide structure for page descriptions in the file such as beginning and ending statements for a prologue section. DSC comments can be useful when your document is going to print or press. When working with the Advanced options, it is helpful to have an understanding of the PostScript language and how it is translated to PDF.
See Adobe PostScript 3. Before processing a PostScript file, you can place parameters in the file to control the following aspects:. Allow PostScript XObjects: PostScript XObjects store information that appears on many pages of the same file, such as a background image or header and footer information.
Using PostScript XObjects can result in faster printing but requires more printer memory. Convert Gradients to Smooth Shades: Converts blends to smooth shades for Acrobat 4 and later, making PDF files smaller and potentially improving the quality of final output. If you have a PostScript file and select this option, a copypage operator copies the page. If this option is not selected, the equivalent of a showpage operation is executed, but the graphics state is not reinitialized.
Overprinted colors are two or more inks printed on top of each other. For example, when a cyan ink prints over a yellow ink, the resultant overprint is a green color. Without overprinting, the underlying yellow would not be printed, resulting in a cyan color. This effect is accomplished by inserting the OPM 1 graphics state parameter into the PDF file wherever the Setoverprint operator is present.
You can open and view the settings file which has a. However, it does not recompress valid images, therefore processing the original image untouched. With this option is selected, performance improves because only decompression not recompression occurs, and image data and metadata are preserved. The job ticket contains information about the PostScript file, such as the page size, resolution, and trapping information, instead of information about content. This information can be used later in a workflow or for printing the PDF.
Use Prologue. These files have many purposes. For example, prologue files can be edited to specify cover pages. Epilogue files can be edited to resolve a series of procedures in a PostScript file. You can upload or download the files. See Uploading and downloading prologue and epilogue files. These suboptions are available:. If this option is deselected, the page is sized and centered based on the upper-left corner of the upper-left object and lower-right corner of the lower-right object on the page.
This option applies only to jobs that consist of a single EPS file. The availability of options depends on the standard you select. Because long-term preservation is the goal, the document must contain only what is needed for opening and viewing throughout the intended life of the document.
For instructions about accessing the Standards reporting and compliance options, see Add or edit PDF settings. Compliance Standard: Select a standard to produce a report that indicates whether the file complies with the requirements and, if not, what problems were encountered. When Compatibility on the General Settings page is set to Acrobat 4. When Compatibility is set to Acrobat 5. When Compatibility is set to an alternative option, the following options are dimmed:.
This option is available when Compliance Standard on the Standards Reporting and Compliance page is set to an option other than None. Report As Error: Flags the PostScript file as noncompliant if one of the reporting options is selected and a trim box or art box is missing from any page. Set TrimBox To MediaBox With Offsets: Computes values in points for the trim box based on the offsets for the media box of respective pages if neither the trim box nor art box is specified.
The trim box is always as small or smaller than the enclosing media box. Set BleedBox To TrimBox With Offsets: Computes values in points for the bleed box based on the offsets for the trim box of respective pages if the bleed box is not specified.
The bleed box is always as large or larger than the enclosed trim box. Output Intent Profile Name: Indicates the characterized printing condition that the document is prepared for. You can select one of the names that are supplied or enter a name in the space provided.
If your workflow requires that the document specify the output intent, select None. Any document that does not meet the requirement fails compliance checking. Output Condition Identifier: Indicates the reference name specified by the registry of the output intent profile name.
Output Condition: Describes the intended printing condition. This entry can be useful for the intended receiver of the PDF document. Trapped: Indicates the state of trapping in the document. If the document does not specify the trapped state, the value provided here is used. If your workflow requires that the document specifies the trapped state, select Leave Undefined.
The document will fail compliance checking if this information is not provided. This entry is not required, but can be used to provide useful information to the intended receiver of the PDF document.
The document options control the appearance of the document within the document window, such as the magnification level and how it scrolls. Show: Determines which panes and tabs are displayed in the application window by default. Bookmarks Panel and Page opens the document pane and displays the Bookmarks tab. Page Layout: Determines whether the document is viewed in single-page, facing-page, continuous page, or continuous facing-page mode.
Magnification: Sets the zoom level used to display the document when opened. The default uses the user-configured magnification value in the Acrobat or Adobe Reader preferences. Open To Page Number: Sets the page that the document opens at, which is usually page 1. Setting Default for the magnification and page layout options uses the individual user settings in the Page Display preferences within Acrobat or Adobe Reader. The window options determine how the window adjusts in the screen area when a user opens the document.
However, the options have no effect when a PDF document is viewed inside a web browser. Resize Window To Initial Page: Adjusts the document window to fit snugly around the opening page, according to the options that you selected under Document Options.
Open In Full Screen Mode: Maximizes the document window and displays the document without the menu bar, toolbar, or window controls.
Show: Filename shows the filename in the title bar of the window. Document title shows the document title in the title bar of the window. The user interface options determine which controls are displayed or hidden when the user opens the document.
If you hide the menu bar and toolbar, users cannot apply commands and select tools unless they know the keyboard shortcuts when they open the file in Acrobat. Prologue files are used to add custom PostScript code that execute at the beginning of every PostScript job being distilled.
Epilogue files are used to add custom PostScript code that execute at the end of every PostScript job. You can download prologue and epilogue files from the server to save them locally.
You may want to download the files to configure them independently or to upload them to another location or to another computer. For example, prologue files can be edited to specify cover pages; epilogue files can be edited to resolve a series of procedures in a PostScript file.
You can also select and upload the prologue and epilogue files to send with each job. Adobe Experience League Sign In. Sign In. New and improved search With improved relevancy, additional filtering, and the ability to search across all learning and Community content, it's now easier to find what you need.
Dismiss Search now. Move fonts that you do not want to embed to this list. If necessary, choose a different font folder from the pop-up menu to display the font in the font list. If you select a font with a license restriction, the nature of the restriction is described in the Adobe PDF Options dialog box. If the font you want is not in a font folder, click Add Name.
A TrueType font can contain a setting added by the font designer that prevents the font from being embedded in PDF files. Removes a font from the Always Embed or Never Embed list. Acrobat does not include the Times, Helvetica, and ZapfDingbats fonts. Settings File. Lists color settings, including those used in graphics applications. Color Management Policies. This menu is available when None is selected in the Settings File menu. Color Management Policies values may affect a PDF differently depending on the compatibility setting you choose in the General panel.
Leave Color Unchanged. Leaves device-dependent colors unchanged and preserves device-independent colors as the nearest possible equivalent. This is a useful option for print shops that have calibrated their devices, have used that information to specify color in the file, and are only outputting to those devices. Tags ICC profiles in images only not text or vector objects , which prevents black text from undergoing any color shift when distilling Acrobat 4.
Calibrates color, making it device-independent. Recommended for PDFs that will be used onscreen or with low-resolution printers. All Working Spaces must be specified. Document Rendering Intent.
Choose a method to map colors between color spaces. The result of any particular method depends on the profiles of the color spaces. For example, some profiles produce identical results with different methods. Acrobat also includes a rendering intent called Preserve, which indicates that the intent is specified in the output device rather than in the PDF.
In many output devices, Relative Colorimetric is the default intent. In all cases, intents may be ignored or overridden by color management operations that occur subsequent to the creation of the PDF file. Working Spaces. Choose a profile to define the color space of all grayscale images in files. Choose None to prevent grayscale images from being converted. Choose a profile to define the color space of all RGB images in files. Choose None to prevent RGB images from being converted.
Choose a profile to define the color space of all CMYK images in files. The default is U. Choosing None for all three working spaces has the same effect as selecting the option Leave Color Unchanged. Retains these settings if they exist in the PostScript file. Black generation calculates the amount of black to use when reproducing a color. Undercolor removal UCR reduces cyan, magenta, and yellow to compensate for black generation. When Transfer Functions Are Found.
Specifies how to handle transfer functions in PDFs. Transfer functions are used for artistic effect and to correct for the characteristics of a specific output device. Deletes any applied transfer functions. Applied transfer functions should be removed, unless the PDF is to be output to the same device that the source PostScript file was created for. Retains the transfer functions traditionally used to compensate for dot gain or dot loss that may occur when an image is transferred to film.
Dot gain or loss occurs when the ink dots that make up a printed image are larger or smaller than in the halftone screen. This method is useful for creating color effects in a file. Preserve Halftone Information. Retains any halftone information in files. Halftone information is intended for use with a particular output device. In a PostScript file, DSC comments contain information about the file such as the originating application, the creation date, and the page orientation and provide structure for page descriptions in the file such as beginning and ending statements for a prologue section.
DSC comments can be useful when your document is going to print or press. Allow PostScript XObjects. Use only in controlled workflows where there is no other option. Convert Gradients To Smooth Shades. Converts blends to smooth shades for Acrobat 4. Convert Smooth Lines To Curves. Reduces the amount of control points used to build curves in CAD drawings, which results in smaller PDFs and faster onscreen rendering.
Preserve Level 2 Copypage Semantics. If you have a PostScript file and select this option, a copypage operator copies the page. If this option is not selected, the equivalent of a showpage operation is executed, except that the graphics state is not reinitialized.
Preserve Overprint Settings. Retains any overprint settings in files being converted to PDF. Overprint settings create color by printing one ink on top of another ink. Overprinting Default Is Nonzero Overprinting. Embeds the settings file. When deselected, performance improves because only decompression, not recompression, occurs.
Job tickets describe the PostScript file and can be used later in a workflow or for printing the PDF. Use Prologue. Sends a prologue and epilogue file with each job. These files can be used to add custom PostScript code that you want to have executed at the beginning or end of every PostScript job being converted.
Sample Prologue. Or, you can type the path into the Address text box. In Acrobat Standard, Distiller processes prologue and epilogue files only if both files are present and located properly. The two files must be used together. In Acrobat Pro, Distiller processes prologue and epilogue files only if both files are present and located properly.
If the prologue and epilogue files are at the same level as the In and Out folders of a watched folder, they are used instead of the ones in the Distiller folder. Process DSC Comments. Log DSC Warnings. Displays warning messages about problematic DSC comments during processing and adds them to a log file.
Preserve OPI Comments. For more information, see the OPI 2. Centers an EPS image and resizes the page to fit closely around the image. If deselected, the page is sized and centered based on the upper left corner of the upper left object and lower right corner of the lower right object on the page.
This option applies only to jobs that consist of a single EPS file. The availability of options depends on the standard you select. Compliance Standard. Produces a report that indicates whether the file complies with the standard you select, and if not, what problems were encountered. When Not Compliant. Specifies whether to create the PDF if the PostScript file does not comply with the requirements of the standard. Creates a PDF even if the PostScript file does not meet the requirements of the standard, and notes these problems in the report.
Creates a PDF only if the PostScript file meets the requirements of the standard, and is otherwise valid. Report As Error Acrobat Pro. Flags the PostScript file as noncompliant if one of the reporting options is selected and a trim box or art box is missing from any page. Computes values for the trim box based on the offsets for the media box of respective pages if neither the trim box nor art box is specified.
The trim box is always as small as or smaller than the enclosing media box. Computes values for the bleed box based on the offsets for the trim box of respective pages if the bleed box is not specified. The bleed box is always as large as or larger than the enclosed trim box. If your workflow requires that the document specify the output intent, choose None. Output Condition Identifier Acrobat Pro. Indicates the reference name that is specified by the registry of the output intent profile name.
For more information, click the question mark next to the option. Output Condition Acrobat Pro. Describes the intended printing condition. This entry can be useful for the intended receiver of the PDF. Indicates the web address for finding more information about the output intent profile. The registry name is optional, but recommended. Trapped Acrobat Pro. Indicates the state of trapping in the document. If the document does not specify the trapped state, the value provided here is used.
By default, only these profiles appear in the working space menus. Unless specified otherwise, the document uses the working space profile associated with its color mode for creating and editing colors. However, some existing documents may not use the working space profile that you have specified, and some existing documents may not be color-managed.
It is common to encounter the following exceptions to your color-managed workflow:. You might open a document or import color data for example, by copying and pasting or dragging and dropping from a document that is not tagged with a profile. This is often the case when you open a document created in an application that either does not support color management or has color management turned off.
You might open a document or import color data from a document that is tagged with a profile different from the current working space. This may be the case when you open a document that was created using different color management settings, or scanned and tagged with a scanner profile.
In either case, the application uses a color management policy to decide how to handle the color data in the document. Color conversion options let you control how the application handles the colors in a document as it moves from one color space to another. Changing these options is recommended only if you are knowledgeable about color management and very confident about the changes you make. To display conversion options, select the Color Management category of the Preferences dialog box.
For most users, the default Adobe ACE engine fulfills all conversion needs. To view a description of an engine or intent option, select the option. Use Black Point Compensation. Ensures that the shadow detail in the image is preserved by simulating the full dynamic range of the output device. Select this option if you plan to use black point compensation when printing which is recommended in most situations.
A rendering intent determines how a color management system handles color conversion from one color space to another. Different rendering intents use different rules to determine how the source colors are adjusted; for example, colors that fall inside the destination gamut may remain unchanged, or they may be adjusted to preserve the original range of visual relationships when translated to a smaller destination gamut. The result of choosing a rendering intent depends on the graphical content of documents and on the profiles used to specify color spaces.
Some profiles produce identical results for different rendering intents.
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