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#11
It's not just printer. Line spacing, paragraph settings, etc are stored in normal.dotx. It is not straightforward in Word to change template after the document is written. Send him your normal.dotx template, and he can copy it to his templates folder (rename his own normal before - so he can restore it after).
This is the dark side of writing more than a memo in Word...
try to lock formatting of document
There is another option. Click on one style, and then manage styles.. in the lower right part there is a check box called Automatically update - uncheck it, and repeat this for all styles