Patent ID: RE43682

Claim:
A pressure-adjustable mechanism for a paper feeding roller in an automatic paper feeder, comprising: a movable paper tray being rotatably supported on said automatic paper feeder, said movable paper tray having a paper-out end and a paper supporting end on which a plurality of paper sheets are stacked; a paper feeding roller located downstream closely below said paper-out end of said movable paper tray; a paper separating plate located downstream closely above said paper-out end of said movable paper tray; a paper tray pressure detecting mechanism for detecting a pressure applied thereon by a weight of said paper sheets stacked on said movable paper tray; and a roller pressure adjusting mechanism for adjusting a pressure between said paper feeding roller and said paper separating plate; whereby said pressure from the weight of said paper stacked on said movable paper tray detected by said paper tray pressure detecting mechanism is transferred to said roller pressure adjusting mechanism for the same to change said pressure between said paper feeding roller and said paper separating plate and to adjust a paper feeding angle of said movable paper tray, enabling smooth sending of a lowermost sheet of said paper sheets on said movable paper tray out of said paper-out end.