Calibration targets for scanner / Calibration of CUPS color laser printer (follow-up)

[Jean-Michel Pouré - GOOZE <jmpoure gooze eu>]

Just one more question on calibration:

Do you think it is reasonable to believe 
that I can calibrate using this chain:
* screen (using calibration tool)
* scanner (using proof prints)
* AND THEN printer (printing charts and then scanning them).

i.e. I would like to avoid investing into a print calibration tool and
would like to use my scanner instead. Is this workable?

Kind regards,
Jean-Michel