Akiyama Buemon (秋山武右衛門) (publisher )Kokkeidō (firm name - 滑稽堂)
Akiyama Seikichi (seal name - 秋山清吉)
Edo/Tokyo print publisher (Marks 005) operated from ca. 1882 to the 1920s; firm name: Kokkeidō. Artists published by this house include Chikanobu, Den'ichi, Ei'nen, Hiroshige III, Kiyochika, Koson, Kunichika, Kunimine, Kunisada III, Kyōsai, Miyagawa Shuntei, Toshihide, Toshikata, Yoshiiku, Yoshimune II and Yoshitoshi.
[Artist in the Lyon Collection who were published by this house have their names highlighted in bold type.]
"Akiyama Buemon was one of the most active publishers in the 1880s and 1890s, producing high quality prints. Some sources mention 1877 as a starting date but the earliest known publication date to 1882. From c. 1882 until 1886, many romantic novels, some with illustrations by print designers, were issued by his Kokkeidō firm, stating Akiyama Seikichi as the name of the publishers, however. During the same time, Kokkeidō was active in producing unserialized actor prints by Kunichika and others, inscribed with Akiyama Buemon as the publisher name. Both Buemon and Seikichi might have been the same person as the firm name as well as address are identical."
This is quoted from Japanese Woodblock Prints: Artists, Publishers and Masterworks 1680-1900 (p. 320) by Andreas Marks.