Okular Printer Stuck

[spica]

Hi All,

An attempt to print another (second) page separately leads to printer is stuck.

I run Okular, press Ctrl-P and set to print only page #1 - the printer starts to make noise and the page is printed. I flip the page and put back to the feeder - I want to print on another side.
I do not close Okular, I press Ctrl-P again and set to print only page #2 - the printer does not make sound, the LED on printer is unstoppably blinking, no page printed.

I looked at the web page http://localhost:631 , it says the printer is idle. The job is completed, but the number of pages is Unknown.

Checked using different application - Evince prints OK.

Printer Xerox Phaser 3020.