Patent ID: 8913933

Claim:
A paper conveying device, comprising: an image bearing body bearing an image on a surface and driven so as to rotate at a first rotational speed about a rotational axis as a center of rotation; a paper conveying member conveying recording paper, to which said image is transferred, to a nip portion formed with said image bearing body, said paper conveying member arranged so as to be in press-contact with said image bearing body and driven so as to rotate at a second rotational speed about a rotational axis as a center of rotation; a torque detecting device detecting first driving torque for rotating said image bearing body at said first rotational speed in a state of allowing said recording paper to pass through said nip portion and/or second driving torque for rotating said paper conveying member at said second rotational speed in a state of allowing said recording paper to pass through said nip portion as detection values; and an adjusting device capable of adjusting an axes distance between the rotational axis of said image bearing body and the rotational axis of said paper conveying member, an elastic layer being provided on an outer peripheral surface of said image bearing body and/or on an outer peripheral surface of said paper conveying member, and said first rotational speed and said second rotational speed have the same value or have values such that one value is an integer multiple of the other value, and said axes distance is adjusted by said adjusting device so that a sum of said first driving torque for rotating said image bearing body at said first rotational speed and said second driving torque for rotating said paper conveying member at said second rotational speed is smaller than a target set value.