3D Inkjet Printer Graveyard

What's on my mind? Everything inkjet and acoustical. I don't follow the common fluid flow inkjet technologies. Inkjet began with wicking fluid on paper, then continuous streaming fluid with deflection electronics or magnetism. Everyone thinks on demand fluid flow is the newest inkjet technology.
The new technology works with no flow and no moving parts. It is 100% acoustic and sound waves expel drop drops at high rates. This technology was introduced in 1984 but was actually inspired by accident in 1979 using a crude Single nozzle inkjet. It is really not new, just well hidden.

This collection of ink jet 3D printers features actual products from the original manufacturers (BPM, Sanders Design International, Visual Impact Corp) and preliminary 3D research.