| http://www.w3.org/ns/prov#value | - Assuming, for example, that the diameter of a driving roller is D (mm), the thickness of the belt is T (mm), and an image forming speed is V (mm/sec), the diameter of a belt neutral plane (diameter of pitch circle) is calculated by: D+T(mm). [0014] From the foregoing, the distance extending over all image forming units is calculated by: N????????(D+T)(mm) [0015] where N is an integer.
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