In a Shutterbug article, David Brooks described things you can do when Epson printer prints are coming out darker than an LCD screen image. One suggestion was to use the Transfer button on the output box in the print preview dialog box. I have used this method with CS2, but the Transfer button is greyed out in CS4. Anyone know how to activate the Transfer button in CS4?
Transfer
Adjusts the transfer functions, traditionally used to compensate for dot gain or dot loss that may occur when an image is transferred to film. This option is recognized only when you print to a PostScript printer. Generally, it’s best to adjust for dot gain using the settings in the CMYK Setup dialog box. Transfer functions are useful, however, when compensating for a poorly calibrated output device.
If prints are coming out darker than the LCD screen (and you're doing everything else correctly), it's better to deal with increasing your ambient light or reducing the brightness of your monitor to compensate. This article from the colorwiki talks about this in more detail:
Discussion
3 repliesTransfer
Adjusts the transfer functions, traditionally used to compensate for dot gain or dot loss that may occur when an image is transferred to film. This option is recognized only when you print to a PostScript printer. Generally, it’s best to adjust for dot gain using the settings in the CMYK Setup dialog box. Transfer functions are useful, however, when compensating for a poorly calibrated output device.
http://www.colorwiki.com/wiki/My_Printer_Is_Too_Dark