Some articles on ringisho:

Japanese Management Culture - Managerial Style
... decision-making” is conducted through a document called a “ringisho.” The “ringisho” is created and circulated by the individual who created the idea ... As the “ringisho” reaches a peer for review, the peer places his or her “personal seal(hanko) rights side up” to agree, “upside down” to disagree, and side ways to ... Once all peers have reviewed the “ringisho” the peers’ manager reviews the “ringisho” and places his or her “hanko” on it ...