I got compilation errors when compiling the cnijfilter-common package and was unable to find a workaround, so I repacked the already-compiled Debian package (also provided in the source tar) into the Slack/Salix format. The cnijfilter-ip2700series package I did manage to compile successfully, you can compare the two SLKBUILD's to see the differences.
If you're interested you can have a look at this wiki page to see how building packages with slkbuild works.
Glad the printer works for you!
