Abstract: The pile of cut sheets (11) are fed one by one, being separated by a friction member (33) which is backed away by a cut sheet (11) advanced thereto by the action of a feeding roller (31). The static friction coefficient between the friction member (33) and a standard sheet of fine paper is set to be 1.0 to 1.5, so as to provide enough amount of frictional force to the interface between the friction member (33) and the cut sheets (11) to ensure the separation of the cut sheets (11).

Abstract: A sheet feeder unit being capable of separately supplying cut sheets of any thickness without causing any residual deformation. Cut sheets (11) in a pile are advanced one by one with a pair of feeding rollers (31) contacting thereto from one side thereof. A friction member (33) is disposed in the middle between the pair of feeding rollers (31) which is backed away by a proceeding cut sheet (11) thereby separating the outermost cut sheet (11) from the other sheets by the frictional force of contact therebetween.

Abstract: A sheet feeder unit capable of separately supplying cut sheets of any thickness or characteristics without causing any residual deformation. The pile of cut sheets 11 are advanced one by one with a pair of feeding rollers 31 contacting thereto from one side thereof. A friction member 33 of various configurations is disposed at various positions for separating the outermost cut sheet 11 from the other sheets by the frictional force of contact generated therebetween when the friction member is backed away by the advancing cut sheet 11.

Abstract: A sheet feeding apparatus has a plurality of sheet trays each of which stores sheets to be fed. The sheet stored in the sheet trays is brought to a sheet feeding position by a plurality of sheet positioning mechanisms corresponding to the sheet trays, and is fed, one by one, at the sheet feeding position by a plurality of sheet feeding mechanisms corresponding to the sheet trays. Further, the sheet feeding apparatus has a motor which drives one of the sheet positioning mechanisms and the one of the sheet feeding mechanisms which corresponds to a sheet tray different from the sheet tray corresponding to the sheet feeding mechanism driven by the motor.

Abstract: A feeding device having a pickup roller which makes pressure contact with paper to feed the paper, a forward rotation roller which is disposed downstream from the pickup roller relative to a paper feeding direction and rotated faster than the pickup roller and a reverse rotation roller which makes pressure contact with the forward rotation roller. One way clutch is disposed between the pickup roller and a drive shaft thereof so as to enable to rotate the pickup roller following the paper transported by the forward rotation roller. The pressure contact force of the pickup roller relative to the paper is reduced when the pickup roller is rotated following the sheet transported by the forward rotation roller.