Adobe 5.5 Design Standard User Manual download pdf (Page 121)

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Adobe Creative Suite 5 Printing Guide 119

document and replace them with a heavier line. You can also thicken

hairlines in Type 3 fonts and PostScript patterns.

1. Choose the Fix Hairlines option in the Print Production task list.

2. Enter values for the hairline width and replacement width, and

select a unit of measurement.

3. Select Include Type 3 Fonts or Include Paerns to replace hairlines

in Type 3 characters or paerns with the same replacement width

as other hairlines.

4. Specify the page range for hairline changes. You can x hairlines for

the entire document or for specic pages.

Note: Because you can use font characters and paerns in a variety of contexts in the

same document, changing the line weight may produce unexpected results. Be sure to

check the results if you select these options, and adjust your selections as necessary.

Fix Hairlines

Increase the stroke weight of anemic vector art by seing a threshold value. Acrobat thickens

only those strokes meeting or exceeding the threshold. ickening Type 3 fonts and paerns

may take a bit longer.

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Transparency is the visual interaction between overlapping, non-

opaque colors in text and graphics. You can create transparency in

Photoshop, Illustrator, and InDesign by using opacity percentages,

blending modes, feathers, drop shadows, embossing, and similar

effects. When saving or exporting files with transparency, you can

choose to save the file in a format that preserves live transparency, or

in a format that flattens transparent objects. If your workflow is based

on the Adobe PDF Print Engine, you’re well equipped to handle live

transparency without having to flatten at any stage. You can maintain

live transparency by saving Photoshop files as native PSD; Illustrator

files as native AI, and PDFs as files that are compatible with Acrobat 5.0

and above. For more information on the Adobe PDF Print Engine, see:

http://www.adobe.com/products/pdfprintengine.

Flattening converts layered or stacked objects with transparency into a

single, flat, opaque layer. Overlapping areas are replaced with objects

that replicate the look of transparently interacting objects. Overprint is

used if necessary to replicate transparency effects in spot color objects.

Flattening is necessary for print output to PostScript or for export to any

file format that does not support live transparency (for example, EPS,

JPEG, and PDF 1.3). Transparency has already been flattened in any PDF

file that was created by converting a PostScript file in Distiller, but

Adobe Creative Suite 5 applications can export PDF files with live

transparency.

As artwork becomes more complex (for example, mixing images,

vectors, type, spot colors, and overprinting), so does the flattening

process and its results. Because transparency flattening may create

overprinting, it is important to ensure that the RIP is set up to handle

overprinting properly.

Adobe recommends flattening transparency only when you are ready

to print a PDF file, unless you need to flatten the PDF file earlier

because of the requirements of your RIP or other aspects of your

workflow. Flattening transparency makes permanent changes that

cannot be undone. So defer flattening until after you perform any

necessary color conversions or other edits.

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Adobe 5.5 Design Standard User Manual Page 121

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