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EPS files for print
Create reliable EPS artwork :-

What is EPS
EPS (Encapsulated Postscript) is a postscript based format used for graphic objects and document exchange. Most graphics programs can import and export EPS files. Eps files can only contain a single page. They usually contain a preview image (image header) for positioning purposes and a postscript body containing the actual image/page data. It is therefore important to remember that when you view an EPS you are usually looking at the image header bitmap, not the actual file data - this can sometimes be misleading.

How are EPS files produced?
Usually via a page export option in your artwork program. You can use EPS files as an intermediate for creating PDF files.

Export Settings
You need to use the correct settings when creating an EPS. Below are some common examples of settings often encountered.
Postscript Level : 1, 2, or 3. 2 and 3 usually being the best options
Image Data - Ascii or Binary : Go for Binary
Header/Preview : 100dpi 8bit colour Tiff (positional image settings - NOT your scans)
Colour Bitmaps : Resample to 450dpi using JPEG compression at maximum quality
Greyscale Bitmaps : Resample to 450dpi using JPEG compression at maximum quality
Mono Bitmaps : Resample to 1200dpi using CCIT 4 compression
Text and Lineart : Compress
Fonts : Embed all fonts or convert to paths/curves. Turn off subsetting.
Colour : If job is CMYK then convert to CMYK on export.
Colour Management: For sheetfed offset eg Eurostandard or Matchprint. Not SWOP
Workflow : Composite.
Overprint/Trapping : Preserve overprint/trapping
Compression : EPS files can sometimes be very large. Compress them with Winzip or Stuffit.

REMEMBER : To add required bleeds and gutters. Convert everything to CMYK that should be CMYK and everything to greyscale that should be greyscale. There should be no RGB objects in your final EPS.