The fiber bast fiber obtained from the bark of a shrub, Edgeworthia gardineri (formerly Edgeworthia papyrifera), that is native to Asia and cultivated in Japan. Mitsumata has been used for paper since about 1600 CE. It is one of three main fiber types used for making paper Japanese paper. The soft, absorbent fibers produce a paper that is weaker and less absorbent that kozo. Mitsumata paper also tends to shrink and expand with moisture content.
Fiber width = 4-20 microns. Striations are fine and irregularly spaced, often crossing to form a v shape. Parenchymal cells are long with irrgular surface markings.
T.Collings, D. Miller, 'The Identification of Oriental Paper Fibers' The Paper Conservator, vol 3, 1978.
- Matt Roberts, Don Etherington, Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
- Book and Paper Group, Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
- The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980
- Bernard Toale, Bernard Toale, The Art of Papermaking, Davis Publications, Portland OR, 1983
- Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000