1976 MICHIO OKAJIMA
In 1976, Michio Okajima, a Japanese scientist, penned the paper, “Dermal and Epidermal Structure of the Volar Skin.” Building on Cummins’ and Hale’s research, Okajima focused primarily on the two rows of dermal papillae which are found under the surface of the friction ridges. The historical relevance of Okajima’s research was that, according to his report, “the incipient ridges are, in fact, permanent friction ridge structure.”
Kuhn, Kurt E. “The Fingerprint Science and Ridgeology.”
http://www.scafo.org/library.