The PSC 1400 series isn't supported until hplip 0.9.5. For the scanner, I installed hplip 0.9.7 from source (not an RPM in sight unfortunately), and after restarting hplip and cups YAST had no problem properly detecting my PSC 1417 as a scanner. I ran a few tests, and everything seems to be working fine. For the printer part I just downloaded the PSC 1400 series PPD file, although I think the PSC 1310 driver will work as well.