After going from being a film fan to being a film journalist, Bansho KANAMORI became a shosei (a student given room and board in exchange for performing domestic duties) of Shozo MAKINO, whom he had interviewed as a journalist, and then he became a film director at the Mikado Company, which Makino had initially established; Bancho was such a dyed-in-the-wool Makino devotee that he stayed at Makino Production until the very end in 1931, continuing to work there even after Makino passed away in 1929, and directed the company's last film; after that, he established 'Kyoritsu Eiga Production' with the remaining members of Makino Production after the latter went bankrupt.
映画ファンから映画記者になり、取材先の牧野省三の書生になって、1919年（大正8年）、牧野が最初に興したミカド商会で映画監督になり、1929年（昭和4年）の牧野が死去し、1931年（昭和6年）の最後の最後までマキノ・プロダクションに残り、同社の最終作品の監督をつとめた生粋のマキノ人・金森万象が、同社の倒産後に、マキノの残党をかきあつめて設立したのが、この「協立映画プロダクション」である。