early life and career jean-françois janinet, also known as françois janinet, was a french engraver and balloonist born in paris, france in 1752 and died in 1814. he was known for his work in intaglio printmaking techniques such as engraving and etching, and was one of the pioneers of the aquatint technique, a variant of etching that produces areas of tone rather than lines. artistic contributions janinet's work in intaglio printmaking…