Doi Teiichi (also called Doi Sadaichi) was a Tokyo publisher of shin-hanga woodblock prints from around 1930 through his death in 1945. After his death, his son Doi Eiichi took over his publishing studio, which is still in business today under the ownership of Doi Eiichi's widow and daughter.
During the 1930s and 1940s, Doi Teiichi worked with many well known shin-hanga artists, including Kawase Hasui, Tsuchiya Koitsu, and the French artist Noel Nouet. Those original shin-hanga designs were reprinted many times, sometimes from completely recarved blocks. The value of Doi-published prints typically corresponds to when those prints were actually produced. Earlier prints published during the 1930s and 40s are generally considered much more valuable to collectors than later reprints made from recarved blocks.
The Ukiyo-e Gallery article on Doi seals is a valuable resource for learning more about the various publisher, printer, and carver seals used in the Doi studio.
Marc Kahn's article about prints marked "Doi Hangaten" is also recommended to learn more about Doi and dating Doi-published prints.
Ross Walker's wonderful website, www.koitsu.com, contains a wealth of information about Tsuchiya Koitsu including how to date Koitsu's Doi-published prints.
Artists published by Doi Teiichi