Whatever Happened to Bottles of Ink?

I came across this old sign on the side of a railway shed. In 1832 Dr. Henry Stephens invented his famous "Blue- Black Writing Fluid" which he developed into writing ink. Stephens ink was indelible and the British government made it the mandatory ink for legal documents and ship's log books.
I can remember Stephens ink and Quink ink. Whatever happened to blotting paper?