Abstract: A game providing system according to an embodiment of the present invention includes one or more processors capable of executing a game program. In one embodiment, the game program includes a conversion rate presentation module configured to present a conversion rate between a first basic point and a first varying point to a player. When a first basic object associated with the first basic point is selected, an acquired point of the player is determined on the basis of the first basic point. When a first varying object associated with the first varying point is selected, the acquired point is determined on the basis of the first varying point.

Abstract: A game providing system according to an embodiment of the present invention includes one or more processors capable of executing a game program. In one embodiment, the game program includes a conversion rate presentation module configured to present a conversion rate between a first basic point and a first varying point to a player. When a first basic object associated with the first basic point is selected, an acquired point of the player is determined on the basis of the first basic point. When a first varying object associated with the first varying point is selected, the acquired point is determined on the basis of the first varying point.

Abstract: A roller for running a flat belt is formed at its surface by an elastic body. Short fibers are mixed with the elastic body. The short fibers are averagely oriented in a direction radially or peripherally inclined to the roller with a small angle and protrude at their tip portions from the roller surface. Owing to a grip force of the protruding short fibers, the flat belt is running, while decreasing a friction coefficient and obtaining a stability to a variation of temperature and humidity. The short fibers may be oriented in a direction axially, peripherally inclined thereto with a specific angle. When a belt guide member is provided to the roller or flat belt, accurate running of the belt is performed.

Abstract: A belt driving system having at least one roller for adjusting creep within a plurality of rollers. Creep detecting means provided at one end of the creep adjusting roller is rotated by torque of a flat belt in contact with the creep detecting means. Biasing means for biasing the flat belt toward the creep detecting means and roller-end displacing means for converting the torque of the creep detecting means to displacement of the end of the creep adjusting roller toward a predetermined direction so that the flat belt is moved to the direction contrary to the creep caused by the biasing means are provided. When the flat belt creeps, the creep contrary to the original creep is caused by the roller-end displacing means, and thus the original creep is compensated. Consequently, stable running of the flat belt is obtained and clear pictures of the electrophotographic machine can be also obtained.