noun, noun or participle which takes 'suru', intransitive verb
imperial or noble signature; autograph by a high-ranking person
Refers specifically to a signature written by an emperor, member of the imperial family, or high-ranking noble. Not used for ordinary signatures.
その書には天皇の親署がある。
The document bears the Emperor's signature.
勅書に親署する。
To sign an imperial rescript personally.
Compound of 親 (しん, 'in person', 'direct') and 署 (しょ, 'signature', 'sign'). The exact historical derivation is uncertain, but the term has long been used in official contexts for signatures by high-ranking individuals.