"Richard N. Moyer" wrote: > > ...The filter in the cartridge is the last barrier of defense > protecting the micro small orifice in the print head. Actually the cartridge filter is the second to the last barrier of defense. There are filters underneath the ink inlet nipples in the print head carriage. But this is no excuse to use dirty ink, since we don't want the real last barrier of defense to become prematurely plugged. -- Ben Haskell - Please turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for instructions.