Mac OS X 10.2 uses CUPS as the spooler backend. You should be able to use the Brother HL-1440 [link|http://www.linuxprinting.org/show_printer.cgi?recnum=Brother-HL-1440|PPD
] from linuxprinting.org. You will also need the foomatic-rip script which is the filter which calls an external rasterizer to convert the PostScript to PCL4.

On the other hand, you could try the installer package at [link|http://www.linuxprinting.org/macosx/hl1250/|here]. It's geared towards locally-connected printers I think, but the PPD files should be installed, and if they are, you should be able to choose the HL-1440 as a model in the Print Center for an LPR printer.

Point your browser to http://localhost:631/, which should present you with CUPS administration interface. I'd just done that on my dad's Powerbook. I haven't tried adding a new printer, but the printer (HP LaserJet 1200 connected to Airport base station) I had added earlier using Print Center is there.

Maybe this would work around the problem you're having.

Edit: Oh! It also looks like the PostScript was not rasterized. You should check the content of the HL-1440 PPD and see which filter is it using. Specifically, look for the lines:

\n*cupsFilter:\t"application/vnd.cups-postscript 0 foomatic-rip"\n*%pprRIP:        foomatic-rip other\n

Also, see if foomatic-rip is found in cupsd's PATH.

Edit 2: [link|http://www.linuxprinting.org/kpfeifle/LinuxKongress2002/Tutorial/VII.cups-help/VII.cups-help.html#tell|Here] is a troubleshooting guide which should help track down the problem.