Multi-positional rotatable/large substrate backstop guide

摘要

A substrate tray (10) includes a tall backstop guide (30) that is attached to the bottom of the feed tray and which rotates about a vertical axis into three positions 45 DEG apart, presenting four different surfaces (31-34) to a stack of substrates in the tray. Each surface accommodates a different substrate size and thereby accommodates four different widths of substrates.