Originally posted by DonJ:
From what I've been able to chase down, your Diconix 150+ uses an HP black ink cartridge. Part number is HP51640A. This should be a fairly common part to chase down. You should be able to get them almost anywhere...such as Wal-Mart, Staples, Office Depot, etc.

Hope this helps you out...Good Luck!
DonJ
Thanks Don, You are half right. Did find that the original carts were in fact made by HP, however the number is wrong. this is a very small cart. This printer is only 6" x 10" x 2" and takes a round cart with print head on cart. I think I have found how to refill one. Thanks for the reply...AJ