Kodak stopped it, but couldn’t kill it in the hearts of the loyalists.
For a process that no one uses, dye transfer has had quite a few efforts at remaining aloft.
The last kodak matrixfilm emulsion produced was in 1994. Since then, there have been 2 public efforts and at least one private success. The Patterson effort attempted to provide all the replacements necessary to continue dye transfer printing, as though kodak were still in manufacturing. This was mat, dye, developer, paper, etc. It appears that they did succeed. They distributed samples and price sheets. I have some of their matrixfilm and dyes. My guess is that the dyes were kodak dyes rebottled, or else they succeeded completely in producing the same dye, since they transfer the same as kodak dyes. Time and color (as measured by reflection densitometer).
James Browning founded a yahoo discussion group, and also researched and published a set of formulas to make the matrixfilm and dyes to make dye transfers. He, along with Egbert Haneke convinced Efke to make a coating of the matrixfilm. They had anticipated wide, and prolonged interest in buying the film. In fact, Mr. Browning published that annual orders could be taken for the Efke runs.
That didn’t happen. Most of the Efke matrix never sold.Actually, most of the last Kodak emulsions didn’t ship either. It too wound up in recycling.
keep your runs to under 300 square meters
because the looky lous don’t buy, they just shop.