Engineers in the Conservation Laboratory work to preserve and reproduce many kinds of historical materials. They are highly skilled in traditional procedures and are also employing the latest multimedia techniques. Their work is divided into four categories:

Calligraphic Reproduction

Written documents are traced with brush, ink, and traditional paper. Skilled calligraphers are able to judge types of ink, light exposure, and even the brush angle used in creating the original document. Copies must be identical with the originals in every respect, including evidence of wear and tear.

Staff MIYAZAKI Hajime

Pictorial Reproduction

Pictorial materials are copied with traditional painting techniques. Reproduction requires experienced painters to be able not only to capture the obvious brushstroke but to recreate the spirit and feeling evoked by the picture or map.

Staff MURAOKA Yukari


We prevent the deterioration and the damages by the insects of our historical materials basically with the traditional technique of mounting "Hyogu". Also, we make sure what kind of technique is demanded now in the times. The restoration work demands proper judgements and high techniques.

Staff TAKASHIMA Akihiko, YAMAGUCHI Satoshi


By the latest digital technology, we create photographic reproductions of historical materials conveying not only texts but also precise color and paper compositions. We also use this technology to preserve old photos including glass plates. Research on photographic technology from the earliest days up to now is also our mission.

Staff TANI Akiyoshi, TAKAYAMA Sayaka