To provide a self-inking rubber stamp type revolving stamp, in which an endless printing belt made of a porous material for stamp having an infinite number of open cells is employed and continuous stamping without a stamp pad becomes possible and, at the same time, the porous endless printing belt is surely driven without idling even by revolving a rotor.

In the revolving stamp, in which a fixed shaft is constructed in the intermediate part of a frame main body, the rotor is rotatably supported around the fixed shaft, a sponge material with projections thereon is coveringly attached onto the rotor, a bridging piece is constructed between the tip parts of the frame main body and the endless printing belt made of the porous material for stamp is hangingly attached between the sponge material and the bridging piece, the sponge material is made of a porous body having the open cells and also serves as an ink occluding body impregnated with ink.

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