US 5,694,636 AGranted

Photograghic processing apparatus

AssigneeNoritsu Koki Co., Ltd.

InventorsMitsuhiko Itojima, Teruhito Oka

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Abstract

A photographic processing apparatus includes a main drive roller mechanism for transporting a photosensitive material in forward and reverse transport directions along a transport passage. The apparatus also includes forward and reverse drive roller mechanisms for assisting the main drive roller mechanism. The forward and reverse drive roller mechanisms are disposed upstream of the main drive roller mechanism relative to the forward transport direction. At least the forward and reverse drive roller mechanisms are supplied with power by a common drive source. The forward drive roller mechanism includes a first one-way clutch mechanism for restricting the rotational force supplied from the drive source when the photosensitive material is transported reversely. The reverse drive roller mechanism includes a second one-way clutch mechanism for restricting the rotational force supplied from the drive source when the photosensitive material is transported forwardly.

Claims7

Dependent claims

A photographic processing apparatus for transporting a photosensitive material in forward and reverse transport directions along a transport passage, which apparatus comprises:

a main pinch transport mechanism which is driven rotatably to transport said photosensitive material in said forward and reverse transport directions;
first and second auxiliary pinch transport mechanisms disposed upstream of the main pinch transport mechanism relative to the forward transport direction, said first and second auxiliary pinch transport mechanisms being supplied with power by a common drive source and disposed in opposition to each other so as to pinch the photosensitive material therebetween;
reverse drive restricting means provided to said first auxiliary pinch transport mechanism for restricting the rotational force supplied from the drive source to the first pinch transport mechanism when the photosensitive material is transported in the reverse direction;
and
forward drive restricting means provided to said second auxiliary pinch transport mechanism for restricting the rotational force supplied from the drive source to the second pinch transport mechanism when the photosensitive material is transported in the forward direction.

2 more elements

Dependencies are inferred from the claim text.