Matsushita Electric Industrial Co., Ltd.

Kiyoshi Matsuura

Kazuichi Yamashita

Hideyuki Ema

A tray stacking apparatus includes a pawl having a projection piece, a roller for opening the pawl, a roller for returning the pawl, and an urging device for urging the pawl into an open position or a closed position. The pawl is opened during its descent, and is returned to its original closed position at a bottom limit position. The tray stacking operation is effected by one driving operation without the pawl rubbing against the tray and thus, powder is not produced by a rubbing of the pawl against the tray so that a clean working environment may be maintained.

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Neyagawa, Japan

Kiyoshi Matsuura