Adobe 5.5 Design Standard Manual de usuario descargar pdf (Pagina 10)

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Adobe Creative Suite 5 Printing Guide 8

PDF/X standards evolve to meet the needs and capabilities of the

changing environment, hence the multiple specifications. How do you

determine which of the PDF/X standards is appropriate for your

workflow? The compatibility level (Acrobat 4 or 5) may be dictated by

the capability of your RIP or other components (such as imposition

software); the output settings will be determined by whether or not

you’re using a color-managed workflow.

Given the proven reliability of PDF/X formats in print workflows, it is

highly recommended that you start with the most appropriate PDF/X

specification for your workflow, and make whatever modifications you

need (such as invoking bleed or adding marks).

PDF/X-1a:2001

PDF/X-1a files can contain CMYK, grayscale, and spot-color content, but

no RGB content. The ArtBox or TrimBox must be internally defined in

the file; fonts must be embedded and/or subset. Acrobat 4.0

compatibility dictates that transparency is flattened (ideally, at the

high-quality resolution). Settings include:

•Compatibility: Acrobat 4.0 (PDF 1.3). Transparency will be aened.

•Color Images: Bicubic downsampling to 300 ppi; Compression =

Automatic (JPEG); Image Quality = Maximum.

•Grayscale Images: Bicubic downsampling to 300 ppi; Compression =

Automatic (JPEG); Image Quality = Maximum.

•Output: Convert to destination color space; no embedded proles.

PDF/X-3:2002

The specification for PDF/X-3 builds on PDF/X-1a, adding support for

embedded color profiles and thus allowing RGB and Lab content in

addition to the color spaces supported by PDF/X-1a. Use this format in a

color-managed workflow. Setting include:

•Compatibility: Acrobat 4.0 (PDF 1.3). Transparency will be aened.

•Color Images: Bicubic downsampling to 300 ppi; Compression =

Automatic (JPEG); Image Quality = Maximum.

•Grayscale Images: Bicubic downsampling to 300 ppi; Compression =

Automatic (JPEG); Image Quality = Maximum.

•Output: No color conversion; embedded proles.

PDF/X-4:2008 [Not available in Distiller]

PDF/X-4 extends the PDF/X-3 specification, adding support for live,

unflattened transparency, as well as layers. The inclusion of layers and

live transparency may make PDF/X-4 files inappropriate in workflows

using very old imaging devices and PDF workflow software. Consult the

documentation for your RIP and any other steps in your workflow, such

as imposition, to determine if PDF/X-4 files can be processed correctly.

Part of the PDF/X-4 standard is the requirement that a “conforming

reader” application shall be used to properly process it, which may

mean that you need to obtain a patch or upgrade for your RIP or other

processes (such as trapping and imposition) that will handle PDFs. RIPs

using the Adobe PDF Print Engine can correctly process PDF/X-4 files.

Additionally, Acrobat/Reader 9 and Acrobat/Reader X correctly output

PDF/X-4 files to fully-compliant PostScript Language Level 2 and 3

devices. Settings include:

•Compatibility: Acrobat 5.0 (PDF 1.4). Live transparency is maintained.

(Note that, while the ocial PDF/X-4 specication allows Acrobat 7.0

[PDF 1.6] compatibility, CS5 applications use Acrobat 5.0 compatibil-

ity.)

•Color Images: Bicubic downsampling to 300 ppi; Compression =

Automatic (JPEG); Image Quality = Maximum.

•Grayscale Images: Bicubic downsampling to 300 ppi; Compression =

Automatic (JPEG); Image Quality = Maximum.

•Output: No color conversion; embedded proles.

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Adobe 5.5 Design Standard Manual de usuario Pagina 10

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