I solved this [the dependency issue in 9.10] by modifying the tutorial at http://ubuntuforums.org/showthread.php?t=1305248 for the 4370dn:
First, I downloaded and extracted the drivers as described previously in this thread.
Then open up a terminal and go to the Downloads folder:
Then change the depends line to read libcups2 instead of libcupsys2, and save.
dpkg-deb -x cndrvcups-common_1.90-1_i386.deb common
dpkg-deb --control cndrvcups-common_1.90-1_i386.deb
copy the entire DEBIAN folder into common.
Once you've rebuilt the deb, you can install them normally. I have this printer working on 32 and 64 bit machines.
dpkg -b common cndrvcups-common_1.90-1_i386.deb