Calligraphy paper called in Japanese backrest paper 裏打専用紙. Users should have experience with calligraphy materials to be able to use this paper.
To use the backrest material, you must follow the following process: First, you must write in a standard paper, then you must spray water around the paper where you have written. You must be careful not to spray too much water. Then, we must place the backrest over the paper we are currently working. When both papers have absorbed the water, they will be attached together. After this process, you must iron both papers to attach the backrest paper into the original paper. In case one paper is bigger than the other one, you can actually cut them to get the wished size. By doing this process, you will be able to frame then.
Each envelope includes 10 backrest papers.