Patent ID: 8303105

Claim:
A medium feeding apparatus comprising: a feeding mechanism including a feeding member having a medium-placed face on which a recording medium is placed, the feeding mechanism being configured to feed the recording medium placed on the medium-placed face of the feeding member by moving the feeding member along a predetermined path; an adsorbing unit including a first electrode and a second electrode each having a face facing a back face of the feeding member which back face is a face on the opposite side of the medium-placed face, the adsorbing unit being configured to adsorb the recording medium located on the medium-placed face to the medium-placed face by generating a potential difference between the first electrode and the second electrode; a first surface layer member formed of a material having a higher volume resistivity than the first electrode and stacked on one of opposite faces of the first electrode which one is nearer to the back face of the feeding member than the other of the opposite faces thereof; a second surface layer member formed of a material having a higher volume resistivity than the second electrode and stacked on one of opposite faces of the second electrode which one is nearer to the back face of the feeding member than the other of the opposite faces thereof; a first low resistance member formed of a material having a lower volume resistivity than the first surface layer member and fixed, at a position between the first surface layer member and the feeding member, to one of faces of the first surface layer member which one faces the back face of the feeding member; and a second low resistance member formed of a material having a lower volume resistivity than the second surface layer member and fixed, at a position between the second surface layer member and the feeding member, to one of faces of the second surface layer member which one faces the back face of the feeding member, wherein the first low resistance member and the second low resistance member are disposed so as to be distant from each other.