Abstract: An extremely compact sorting apparatus includes a plurality of trays, each tray having a pin on each side of an entry portion side where a recorded sheet is received. The tray pins are guided by a vertical guide groove disposed on a frame so as to form a tray entry portion, as cam wheels with slots shift trays one level upwardly or downwardly. A transport plate for guiding a recorded sheet pivotally supports a discharge roller shaft and a cam wheel shaft coaxially. Furthermore, a motor for driving the discharge rollers and a motor for driving the cam wheels are mounted on the transport plate to provide a transport unit. When a recorded sheet is inserted onto the transport plate, it is detected by a detector, so that the drive of the discharge rollers begins and the recorded sheet is discharged to the tray entry portion. When this discharge is completed, the drive of the cam wheels begins so that the trays are shifted by one level.

Abstract: A sheet sorter delivers sheets introduced seriatim from a host unit such as a copier onto a plurality of removable stationary sheet receiving trays through its pivotable sheet guide and discharge mechanism having four pivotal axes. The sheet guide and discharge mechanism is pivotably supported at its one end on two fixed pivotal axes so that the mechanism can be pivotally swung up and down about the two fixed pivotal axes. At the other end of the sheet guide and discharge mechanism, which is unsupported, are disposed the other two pivotal axes and sheet discharge rollers. The swinging motion of the mechanism is achieved by a Geneva drive mechanism including a first driving motor so that the level of the sheet discharge roller is sequentially shifted to be aligned with each of the tray levels and the sheets are seriatim sorted onto the respective trays. The sorter has a second driving motor for driving the sheet discharge rollers.