Abstract: This invention provides a tray shifting type sorter comprising a number of trays having a couple of trunnions at the rear ends of both lateral sides, respectively and a couple of drive wheel assemblies oppositely installed on both side walls of the sorter. The drive wheel assembly includes a cam wheel shifting the trays and a supplementary wheel supporting the trays over the drive wheel assembly. The invention further provides a sheet jogging device for aligning the copy sheets with an alignment rod using a wire as the power transmission apparatus and equipped with tension change apparatus to loosen the wire, so that the drive apparatus is prevented from being overloaded by the continuous contact between the alignment rod and the copy sheets.

Abstract: A sheet post treatment apparatus implementing exact and reliable sheet alignment without the need for a separate driving source for the sheet aligning bar. The apparatus includes a rotation center shaft attached to a slot liner of a side plate; a wheel fixed into the rotation center shaft and formed with a spiral groove; an eccentric cam rotating attached to the rotation center shaft; an aligning rod and a rotation lever one end of the rotation lever being connected to the eccentric cam and the other end thereof being passed through said the plate, displaced to the extent of eccentricity level of the eccentric cam; and a restoration spring, one end thereof being fixed at the side plate and the other end thereof being hung up on one side of the rotation lever. Alternate embodiments include driving the rotation lever through a bevel arrangement, and providing a moving pin on the eccentric to drive the rotation lever.

Abstract: The present invention relates to a sheet post treatment apparatus aligning, within certain limits, discharged sheets received in said bin tray and drastically reduces the driving load of the motor, operating space and manufacturing costs through keeping the length of the aligning rod as short as possible for transferring sheets.