Photocopy machines
AssigneeAM International, Inc.
InventorWalter A. Hudson
Life of this patent
Estimating the term…
Abstract
A photocopy machine is provided comprising an exposure roller for exposing a sensitized copy sheet to an original document to be copied and an applicator roller for applying a developer to the exposed copy sheet to produce a visible image. A drive means is provided for selectively operating the rollers in a first or a second mode of operation. In the first mode of operation, the rollers are positively driven in one direction for making copies and in the second mode of operation the rollers are free wheeling in either direction to facilitate removal of a sheet jam and servicing of the machine.
Claims10
In a photocopy machine including roller means adapted to be positively rotated in one direction defining a first mode of operation and freely rotatable in either direction defining a second mode of operation, drive means for the roller means, comprising:
- driver means including a uni-directional clutch for positively rotating the roller means;
- driver means rotatably mounted on the driver means operable between an active condition in driving engagement with the driver means for operating the roller means in the first mode, and an inactive condition out of driving engagement with the driver means for operating the roller means in the second mode;
- drive element means actuable between a first position for operating the driven means in the active condition and a second position for operating the driven means in the inactive condition;
- hub means provided on the driver means including an axial bore for supporting the drive element means in its movement between the first and the second position;
- means for selectively actuating the drive element means between the first and the second position;
- and
- power means for rotating the driven means.
In a photocopy machine including an exposure roller for exposing a sensitized copy sheet and an applicator roller for developing the exposed copy sheet, drive means for positively rotating the rollers in one direction for making copies defining a first mode of operation and for permitting free rotation of the rollers in either direction to facilitate removal of a sheet jam defining a second mode of operation, the drive means comprising:
- a driver sprocket including a uni-directional clutch associated with the applicator roller;
- a driven sprocket rotatably mounted on the driver sprocket operable between an active condition in driving engagement with the driver sprocket for operating the rollers in the first mode, and an inactive condition out of driving engagement with the driver sprocket and freely rotatable in either direction for operating the rollers in the second mode;
- drive element means actuable from a first to a second position for operating the driven sprocket to the inactive condition and from the second to the first position for operating the driven sprocket to the active condition;
- hub means provided on the driver sprocket including an axial bore for supporting the drive element means in its movement between the first and the second position;
- means for selectively actuating the drive element means between the first and the second position;
- and
- power means for rotating the driven sprocket.
Dependencies are inferred from the claim text.