Color calibration bars are printing

Question

I am printing on an Epson Stylus Pro 4800. I am using Photoshop CS2 (version 9.0.2)and have the Color Settings set at North American Prepress2 which was recommended for using ICC settings. I have the printer set to "No Color Adjustments" (i.e. let Photoshop control the color).
Each time I send an image to print, the printer is printing color calibration bars then ejecting the sheet. The image is printing on the second sheet. At $2.50 per sheet (fine art paper), I can't afford to waste the paper. Does anyone know how to turn the color calibration bars off. I have already checked the Output Options in the print dialog box and the calibration box is unchecked.
Thanks

Answer 1

Thanks for the response. Since I didn't know if this was a Photoshop setting or a printer setting, I also emailed Epson. As it turns out it was a setting on the printer's internal menu. The "Auto Nozzle Check" had been turned on which forces the printer to recalibrate the nozzle spray.
If anyone else runs into this problem, here is the fix:
1.) Press Menu twice, screen will display "Printer setup, Platen Gap"
2.) Press the up arrow four times, screen will display "Auto Nozzle Check"
3.) Press menu once, you should see "Auto Nozzle Check, *On"
4.) Press the down arrow once, you should see off
5.) Press the menu button once an asterisk should appear next to the word off
6.) Press pause to go back to ready, the auto nozzle check is now disabled.
Note: You may also turn off "Auto Cleaning".
Thanks