DATE STAMP UNIT AND ROTARY SEAL UNIT

PROBLEM TO BE SOLVED: To provide a date stamp unit and a rotary seal unit in a simple structure, which can correctly determine the seal position of printing belt of a date stamp and can automatically and correctly set the date of the date stamp. SOLUTION: In a date stamp unit including a date stamp with a rotary seal body which restricts or allows the rotation of a plurality of printing belts through the relative movement of a slide frame against the date stamp body, and a date control device which, by the control of the control section having a clock function, sets the dating with its belt rotary mechanism rotating the rotary seal body of the date stamp stored in the date seal containment section, each printing belt of the date stamp has one or plural number of detection points by which it recognizes each of its own position and the date control device has a detection section which detects each detection point of each printing belt which is rotated by the belt rotary mechanism. COPYRIGHT: (C)2011,JPO&INPIT