Mori Seisakusho (森製作所, meaning Mori Works)[1] was a Japanese camera active from the mid or late 1930s. It was based in Kamihirai (Tokyo) during World War II.[2] Various cameras are attributed to this company, but little is known for sure.

In the mid-1930s, Mori reportedly made the Semi Dymos 4.5×6cm folder.[3] From 1938, it made the Rollekonter 6×6 TLR.[4] Rebadged versions of the camera were sold by various other companies. The Semi Konter and Konter Six, about which little is known, were perhaps made by Mori Seisakusho as well.[5] An original document says that the Zessan sold by Riken was produced by "Mori Kōjō" (森工場, meaning Mori Plant);[6] it is likely that this was another name for Mori Seisakusho.

After World War II, Mori Seisakusho released the Bikor-Flex, a revised version of the Rollekonter. It was one of the first Japanese TLR cameras available on the market. It is also said that the company made three prototypes of a Morrisflex 6×6 TLR.[7]

Mori was probably absorbed into Bikōdō, distributor of the Bikor-Flex. In late 1949,[8] the company Bikōdō Seisakusho (meaning Bikōdō Works) released a Superflex 6×6cm TLR, again based on the Rollekonter, continuation of Mori's former camera line.

Camera list[]


  1. The full name is given in Kitano, p.49 of Kohga Gekkan June 1949, and in various recent sources.
  2. Its address in 1943 was Tōkyō-to Katsushika-ku Kamihirai-chō 550 (東京都葛飾区上平井町550). Source: "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras").
  3. Tanaka, p.132 of Nigan-refu no hanashi (zenpen).
  4. Gyōkai san-jū-nen no ashiato (Feb. 1939), p.13 of Nihon Shashin Kōgyō Tsūshin July 20, 1967, reproduced on p.231 of Hyaku-gō goto jūkai no kiroku: ロールコンターの森製作所. This is confirmed in Tanaka, p.19 of Kurashikku Kamera Senka no.14 and p.132 of Nigan-refu no hanashi (zenpen).
  5. The Semi Konter is attributed to Mori Seisakusho in Kokusan kamera no rekishi, p.336.
  6. "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras"), items 158–9.
  7. See this page of the AJCC.
  8. Kokusan kamera no rekishi, p.353.