A fixing apparatus according to one aspect of the present invention includes a non-contact temperature detecting element 81 allocated in non-contact with a heat roller, the sensing element detecting a temperature of the heat roller. Upon receipt of a selection for a digital video recording, the system and method causes the selected digital video recording to be wirelessly transmitted to the wireless communications device. The stage can be excluded from the design. One side part inner peripheral surface and the other side part inner peripheral surface of the receiving hole 4a in the peripheral direction of the supporting part 4a are each formed of a circular arcuate face having a same radius of curvature as the radius of the planetary gear 5. A calculation device includes a unit for calculating the azimuth angle between movable body and a subject, a unit for calculating the distance traveled by the movable body between two points of time, a unit for calculating a change in angle in the direction of movement, and a unit for calculating the linear distance from the movable body to the subject by using the unit. , a weight average molecular weight of 20,000 to 100,000, a halogen content of greater than 0 and less than 3000 ppm based on the poly weight.