Tire marking apparatus

1. A tire marking apparatus for performing marking in a tire, comprising:

a center position adjusting mechanism configured to cause the rotational position adjusting rollers to abut against the tread of the tire from a plurality of circumferential positions to align the tire;

a disk part having a central axis that is adjusted substantially perpendicularly to a printing surface of the tire;

a plurality of printing parts that are provided in the disk part so as to be capable of moving forward and backward with respect to the printing surface and are arranged around the central axis; and

a printing driving unit that moves at least one printing part arranged at a printing position that faces the printing surface of the tire forward,

wherein

the centering mechanism is configured to cause the rotational position adjusting rollers to rotate the tire around an axis of the tire thereby mating a predetermined position on the printing surface with the position of the printing part.

2. The tire marking apparatus according to claim 1 ,

wherein the printing driving unit moves the plurality of printing parts forward.

3. The tire marking apparatus according to claim 1 ,

wherein the plurality of printing parts are arranged at equal intervals around the central axis.

4. The tire marking apparatus according to claim 1 , further comprising:

a ribbon supplying mechanism that arranges an ink ribbon between the printing part at the printing position, and the tire,

wherein the printing parts perform printing when pressing the ink ribbon against the tire.