Patent ID: 7621529

Claim:
A printing medium feeding device comprising: a shaft supporting member supporting a rotation shaft at least at two supporting positions; a regulation unit regulating a core position of the rotation shaft located between the two supporting positions where the rotation shaft is supported by the shaft supporting member, a driving roller having a roller circumferential surface which comes in contact with a printing medium, applies a force to the printing medium by rotating the rotation shaft, and feeds a printing medium from an upstream side to a downstream side of a straight line passing through the rotation shaft center at the supporting positions along a feeding direction; a driven roller in contact with the driving roller which follows the rotation thereof; and wherein the regulation unit has an intermediate member including a pressing surface which comes into contact with the rotation shaft on either the upstream side or the downstream side of the rotation shaft so as to move the core position of the rotation shaft located between the two supporting positions toward the downstream side or upstream side of the line passing through the rotation shaft center at the supporting positions, the intermediate support member being urged by an urging member.