A sheet conveying apparatus for OCR/VSC integrated systems, which selectively delivers postal items to upper- and lower-side stackers, includes at least one pair of conveyor belts bifurcating from a bifurcation gate to the down-side stackers, and at least one pair of conveyor belts bifurcating from the bifurcation gate to the upper-side stackers. The conveyor belts include a first twisted section, an S-shaped ascending portion, and a second twisted portion. Each postal item is tilted by the first twisted portion, then raised by the S-shaped ascending portion with its tilted attitude maintained, and returned to upright by the second twisted portion.