These exclusive papers have been selected and commissioned by ourselves because of their high-quality and special characteristics.
Tosa Kozo by Fujiwara Masuhiko Tosa being the ancient name of the Kochi Prefecture in Japan.
Traditional Washi Paper made by Fujiwara Masuhiko in the Tosa area of Japan from the finest quality local Kozo. Tosa Kozo is thought to be the strongest of Japanese Kozo fibres.
In the words of Hiromi Tanimura who introduced us to this paper, “Making a consistent lightweight paper is especially hard in large sizes. It is unusual to find this quality in such a large handmade sheet. Fujiwara-san is renowned for achieving a consistent thickness and gsm weight”.
All the papers are made at 630 x 980mm except for No.2 which has the option of a half-size sheet.
Standard stock gsm weights are: 12.2, 18.3, 30.6, 49.0 with 97.8 to special order subject to minimum quantity requirement.
In Japan the traditional unit of measure for a paper’s weight is called a Momme which equals 3.75gsm. Other weights or variations can be commissioned using a mixture of 90% Tosa Kozo and 10% or 20% Nasu Kozo to make the paper harder.
Our standard stock is unbuffered with a pH6.5 to 7.5. Paper- buffered with Gofun (traditional Japanese shell powder/calcium carbonate) can also be supplied to special order where the pH will be 8.5 to 9. Special orders should be placed before the winter season when the paper is made.
All Fujiwara Tosa papers are cooked with caustic soda ash for a smooth finish and sun-dried on wooden boards.