Abstract: Provided is a belt driving roller for a belt driving device configured to drive and rotate an endless belt with at least one driving roller of a plurality of rollers over which the belt is hung by its internal surface, wherein the belt driving roller includes an electroviscosity retaining member of which surface viscosity force reversibly changes under an effect of an electric field.

Abstract: Provided is a belt driving roller for a belt driving device configured to drive and rotate an endless belt with at least one driving roller of a plurality of rollers over which the belt is hung by its internal surface, wherein the belt driving roller includes an electroviscosity retaining member of which surface viscosity force reversibly changes under an effect of an electric field.

Abstract: A holding apparatus, a conveying apparatus, and a rotation-transmitting apparatus are provided that are capable of stably holding an object while suppressing an influence of a change in shape of the object and a fluctuation of a holding form. A conveying apparatus according to one form of the present invention includes a hand and a holding body provided on the hand. The holding body includes a holding member that includes a holding surface that comes into close contact with a holding object, the holding member being capable of holding a conveying object on the holding surface, and a viscoelastic member that is formed of a viscoelastic material and bonds the hand to the holding member. By the viscoelastic member being elastically deformed and the entire surface of the holding member being brought into close contact with the holding object, the conveying apparatus is capable of holding the conveying object on the hand.

Abstract: A holding apparatus, a conveying apparatus, and a rotation-transmitting apparatus are provided that are capable of holding an object in a tiltable manner. A conveying apparatus according to one form of the present invention includes a pad supported by a supporting member on a hand. A concave portion is formed on the pad, and by the concave portion engaging with the supporting member fixed to the hand, a pad is supported in a tiltable manner. A conveying object is held by an adhesive layer of the pad adhering thereto. By tilting with respect to the hand , the pad follows the shape or vibration of the conveying object, with the result that the conveying object can be conveyed stably.