You can use the 32 bit version of a Brother printer driver with 64 bit Linux distributions. To install the driver:
 

For RPM-based distributions

1. If your distribution does not have a 32 bit library as standard, install it. (For example, install glibc.i686 or libstdc++.i686 for Fedora 10 or later.)

   nss-softokn-freebl.i686 is a dependency and is also required.

2. Install the LPD/LPRng driver and the CUPS driver.
    
3. If the /usr/lib64 directory exists, check whether the "br (printer name) filter" file exists under /usr/lib64/cups/filter. If not, copy it from the /usr/lib/cups/filter directory.
    
4. Set up the printer using "http://localhost:631/printers".

For DEB-based distributions

1. If your distribution does not have a 32 bit library as standard, install it. (For example, install lib32stdc++6 for Debian, ia32-libs or lib32z1 for Ubuntu.)
    
2. Install the LPD/LPRng driver and the CUPS driver using the --force-architecture option.
    
3. If the /usr/lib64 directory exists, check whether the "br (printer name) filter" file exists under /usr/lib64/cups/filter. If not, copy it from the /usr/lib/cups/filter directory.
    
4. Set up the printer using "http://localhost:631/printers".