Comment 18 for bug 206365

As far as I could analyzed the problem not the lpr-driver but the cupswrapper has a bug.
In my case the brlpdwrapperDCP110C (or ~MFC210C) filters the cups arguments and sends them to brprintconfij2 which changes brDCP110Crc. Manually running brprintconfij2 works but only as root. So the bug is likely to be in the brlpdwrapperPRINTER-scripts or a problem of insufficient permissions.

I tried understand the script from brother (which wasn't easy for me because I know neither bash- nor csh-scripting) and then compared it to your file. The only difference I found was in line 462 (but there could be more):
   set Default=`echo "$Default" |sed s/" "//g |sed s/" "//g ` [your file]
   set Default=`echo "$Default" |sed 's/\" \"//g' |sed 's/\" \"//g' ` [Brother]
I haven't a clue what that means but it's obviously a difference. Was this intended in some way?