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COMMON PITFALLS continued
ITEM WHAT’S THE DANGER?
Compression You can happily use WinZIP or StuffIT to
compress your fi les, but never compress
images using LZW compression or JPEG
encoding. Doing so has been known to cause
problems and may result in your fi le not
printing at all.
Overprint Be careful with overprint settings (especially
be careful
in Quark). If you set objects to overprint, they
with
will not ‘knock-out’ the background, and will
overprint
look very different to what you see on screen
settings or proof (see page 22). Black text generally
defaults to overprint, (as does the 100% black
swatch in some applications). This is usually
OK. Please refer to your application manual for
more details.
OLE Objects Windows applications are happy to copy
objects back and forth between themselves.
OLE
Unfortunately, they don’t print properly.
Always convert OLE objects to bitmaps before
sending your fi le.
EPSs within EPSs Not a good idea as this massively increases the
risk of a Postscript error. Certain Illustrator EPSs
also cause problems in Quark.
Duotone/RGB These may print in black and white, or with
images
washed out colours – always convert to CMYK.
14
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