PS Conversion is a function for converting input data in PS (PostScript) or EPS (Encapsulated PostScript) format to PDF format. Converting data to PDF format enables the rendering process to be performed with APPE (Adobe PDF Print Engine).
The PS conversion function only operates when the input data is in PS or EPS format.
The following shows the versions of the PS-PDF conversion engine (Normalizer) and corresponding Acrobat Distiller incorporated into this version of XMF.
Normalizer: Version 9.0
Acrobat Distiller: Version 11.0
If existing settings are modified, a workflow item may need to be retried depending on the setting item.
If a separated PS is input, it is recomposited (re-combined) in XMF and a PDF can be generated. Whether or not to perform recomposition for separated PS is set in [Page Prep Preferences] pane of the job settings when creating a job template.
For data created with another imposition application or package printing application, the orientation of the document may be rotated 90 degrees when input to XMF. In this case, convert the data to the PDF format with the originating application in advance and then input the data.
ID
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Description
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1
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General Options
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Set the default values for the page size and resolution.
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2
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Default Page Size
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If the page size is not specified in the input data, the width and height set here are applied as the page size. The valid setting value range is 1.1 to 5,080.0 mm (3 to 14,400 points, 0.043 to 200.00 inches).
Note
- The page size value corresponds to the page size in the case of a PS file and the bounding box size in the case of an EPS file.
- If a numerical value of 0.0 or less (unit: mm) is input, the letter size is applied as the default page size (width: 215.9 mm, height: 279.4 mm).
- If a numerical value that is above 0.0 and less than 1.1 or above 5,080.0 (unit: mm) is input, a PS conversion error is generated.
- Even when a numerical value that generates a PS conversion error is input, if there is a case where PS conversion was processed without a problem after XMF started, the setting value used at that time will be applied.
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3
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Default Resolution
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Set the resolution (width and height) for processing and outputting PS and EPS files with the output device. The valid setting value range is 72 to 4,000 dpi.
Note
- If an invalid value is input, 600 dpi is applied as the default resolution.
- Even when an invalid value is input, if there is a case where PS conversion was processed without a problem after XMF started, the setting value used at that time will be applied.
- If a high resolution is set, the output file size will become larger and the data processing may take a while.
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4
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Colour Conversion Options
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Configure the settings related to colour conversion.
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5
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Preserve UCR and Black Generation
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If this checkbox is checked, when UCR (Under Colour Removal) and black generation specifications are included in the input data, that information will also be saved to the PDF.
Note
- UCR (Under Colour Removal) is a technology in which the grey components formed by overprinting the 3 colours C, M and Y are replaced with K (black). The use of UCR results in a reduction in overall ink usage.
For example, if the grey components formed by overprinting each of C, M and Y are 35%, they are replaced with K and overall ink usage is reduced by setting C to 65%, M to 55%, Y to 55% and K to 75%.
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6
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Preserve Halftone Information
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If this checkbox is checked, when halftone information is included in the input data, that information will also be saved to the PDF.
Note
- Halftone is information that represents continuous tone with dots, lines and other objects in only black and white. Density is represented by the area covered by black and white.
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7
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When Transfer Functions Found
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Click [ ] and select the process for when transfer functions are set in the input data.
Preserve: Also save the transfer functions in the PDF file that is generated.
Remove: Delete the transfer functions.
Apply: Generate the PDF for which the transfer functions have been applied.
Note
- Transfer function are functions for preserving the values of the source data and converting the values only at the time of output. Setting transfer functions in the source data allows you to achieve effects such as output with a brightness differing from that of the source data.
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8
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Advanced Options
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Configure the settings related to overprint and gradient conversion.
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9
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Preserve Overprint Settings
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If this checkbox is checked, the overprint information of the input data is also reflected in the PDF.
Note
- If this checkbox is cleared, all of the objects are knocked out after the conversion to PDF.
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10
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Convert PostScript Gradients into PDF Smooth Shades
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If this checkbox is checked, the gradients included in the input data are converted to smooth shading.
Note
- Smooth shading is a function that is supported from PostScript level 3 and above.
- Converting the gradients to smooth shading allows you to reduce the data size and represent gradients with high gradation.
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11
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Document Structuring Conventions
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Configure settings related to DSC comment processing.
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12
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Process DSC Comments
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If this checkbox is checked, the DSC comments included in the input data are processed at the time of conversion to PDF.
This will enable you to use the [Preserve EPS Information from DSC], [Preserve Document Information from DSC], [Preserve OPI Comments] and [Resize and Centre EPS Files] functions.
Note
- DSC (Document Structuring Conventions) comments are comments that begin with %% in the PostScript that are for structuring a PostScript document.
- If this checkbox is cleared, all of the DSC comments included in the input data are ignored.
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13
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Preserve EPS Information from DSC
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If this checkbox is checked, the information related to the EPS, such as the originating application and creation date, is saved to the PDF.
Note
- If this checkbox is cleared, the EPS information included in the input data is discarded.
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14
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Preserve OPI Comments
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If this checkbox is checked, the OPI information is saved to the PDF.
Note
- OPI (Open Prepress Interface) is a technology for keeping low-resolution images in addition to the actual images within the same file to facilitate a combination of smooth layout work and high quality output by using the low-resolution images at the time of layout and using the actual images (high-resolution images) at the time of output.
- If OPI comments are not included in the input data, this setting has no effect even if the checkbox is checked.
- In the XMF rendering process, the low-resolution images are not substituted with the actual images. To substitute them with the actual images, a PDF output from XMF needs to processed in a system that is compatible with image substitution using OPI comments.
- If this checkbox is cleared, the OPI comments included in the input data are discarded.
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15
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Preserve Document Information from DSC
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If this checkbox is checked, the information related to the document, such as the document title and creation date and time, is saved to the PDF.
Note
- If this checkbox is cleared, the document information included in the input data is discarded.
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16
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Resize and Centre EPS Files
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If this checkbox is checked, the bounding box values of the EPS file are set as the page size, and a PDF with the objects placed in the centre is generated.
If this checkbox is cleared, the setting values of [General Options] - [Default Page Size] are set as the page size, and a PDF with the origin of objects placed in the lower-left corner of the page is generated.
Example: %%BoundingBox (0 0 228 228) [Default Page Size] (Width: 210.0 mm, height: 297.0 mm)
When checkbox is checked
A PDF file with a page size 228 points wide and 228 points high is generated
When checkbox is cleared
A PDF file with a page size 210.0 mm wide and 297.0 mm high is generated, and the objects are placed in the lower-left corner
Note
- The numerical values of the bounding box (%%BoundingBox) represent the coordinates of the lower-left corner (x, y) and the coordinates of the upper-right corner (x, y) of the bounding box (unit: points).
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17
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Image Compression
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Select the image compression method.
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18
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Pass Through JPEG Images
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If this checkbox is checked, compressed JPEG images (images that are already compressed using DCT encoding) are processed without recompression.
If this checkbox is cleared, images are decompressed but not recompressed.
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19
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Colour
Greyscale
Monochrome
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Click [ ] and select the compression type.
Select one of the following encoding types.
DCT Encode: Select the image quality from [Low], [Medium] and [High]. Generally, the higher compression rate the worse the image quality. This compression type is for [Colour] and [Greyscale].
Flate Encode: Compress images without any quality loss using the Zip compression method. This compression type is for [Colour], [Greyscale] and [Monochrome].
CCITT Fax Encode: A compression type that is suitable for black and white binary images, etc. This compression type is for [Monochrome].
Run Length Encode: A compression type that is suitable for images with a large ratio of white or black areas. This compression type is for [Monochrome].
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