The LaserWriter driver on the spooler determines the version needed by each
workstation. Therefore, all printers captured by the spooler must use the
same drivers. However, you need only update the users' drivers, not the
system software. The 6.0.1 driver is compatible with Macintosh System
Software 6.0.x.
In other words, if there are different versions of the LaserWriter Driver
in your network on various Macintoshes, including System 7 versions, the
printer will have to go through a lengthy process of reinitializing itself
to a new version of the LaserWriter driver every time a different version
is used in the printing process. In general, the best and most consistent
approach is to update every Macintosh on the network with the highest
version of the LaserWriter driver being used on the network.