Postflight - EFI DocuColor 5000 User Manual

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OSTFLIGHT
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OSTFLIGHT
The Postflight feature helps you determine why some printed jobs may not deliver expected
color. Acting as a diagnostic and training tool for all users, it provides helpful global and
object-specific information about how a job is actually received and processed by the Fiery
EXP8000/50.
Use Postflight to troubleshoot color problems with a previously printed job or as a preventive
measure. You can print the original document (or RIPped and previewed) with all objects
(images, graphics, and text) color-coded. A report explains what color spaces are used in the
job and what print options affect those spaces. The report also provides information about the
printing environment, such as calibration date, time, and method. Print a Test Page to verify
the condition of the printing environment.
Postflight is a powerful analysis tool that enumerates in its reports not only those color spaces
that are used by visible objects, but any color space called by a job. This can be very useful in
diagnosing puzzling situations that may require correction. For example: using one specific
combination of a printer driver, an OS, and a desktop publishing application emitting
separations for plates, you might find that: 1) the Postflight color-coded pages show the Cyan,
Magenta, and Yellow separations in the "DeviceGray" color space, while the Black separation
is shown in the "DeviceCMYK" color space; 2) the Postflight report enumerates: DeviceGray,
DeviceCMYK and DeviceRGB. What once required a PostScript expert to decipher can now
be interpreted in minutes using Postflight reports: the Cyan, Magenta, and Yellow pages are
defined in "DeviceGray", the Black page is using the "K" channel of DeviceCMYK, and the
job is calling for the RGB color space, without applying it on any user-visible object.