Unfortunatly I don't have enough karma to alter my original post

EDIT: Respective code:

@api.multi    
def export_data(self, fields_to_export, raw_data=False):        
    for r in self:            
        r.printed = True            
        r.timestamp_printed = fields.Datetime.now()        
        rec_id = super(pricehistory, self).export_data(fields_to_export, raw_data=False)

After this the view returns to the export dialog. However there is no way to refresh the view from which the record export was called.

As ODOO use   XMLHttpRequest  so after the method  call the view not reload [for performance enhancement ]  by default ,but you can do it using tag reload.

try this code in the method , it will refresh/reload  the view after method called:

return {
    'type': 'ir.actions.client',
    'tag': 'reload',
}