Solus now has a firm grip on Brother printer drivers, and now success with the scanners. Refer to T83. Thanks Sunnyflunk et al.
Remainders:-)
The PC-FAX brother driver. Fun and games there on the the Brother site for installation with .deb and .rpm.
< http://support.brother.com/g/s/id/linux/en/instruction_pcf2.html?c=us_ot&lang=en&redirect=on >
The actual driver looks to be called brpcfacs - from 2007 odd by the looks of it.
And yes, it all appears to hang off java.
Any assistance appreciated.