Abstract: An image reading device includes a reading portion, a document type specifying device, and a feed controller. At the reading portion, one side of a document is read. The document type specifying device is configured to specify whether the document is a first type document or a second type document of which length in a feed direction is longer than the first type document. The feed controller is configured or programmed to perform a U-turn control and a switchback control. In the U-turn control, after reading a first side of the first type document at the reading portion, the first type document is fed in a U-turn manner without switching back, and a second side of the first type document is read at the reading portion. In the switchback control, after reading a first side of the second type document at the reading portion, the second type document is caused to switch back, and then a second side of the second type document is read at the reading portion.

Abstract: An image reading device includes a reading portion, a document type specifying device, and a feed controller. At the reading portion, one side of a document is read. The document type specifying device is configured to specify whether the document is a first type document or a second type document of which length in a feed direction is longer than the first type document. The feed controller is configured or programmed to perform a U-turn control and a switchback control. In the U-turn control, after reading a first side of the first type document at the reading portion, the first type document is fed in a U-turn manner without switching back, and a second side of the first type document is read at the reading portion. In the switchback control, after reading a first side of the second type document at the reading portion, the second type document is caused to switch back, and then a second side of the second type document is read at the reading portion.

Abstract: An automatic document feeder includes a feeding path and a plurality of feed roller sets. Through the feeding path, an original document is fed in one direction from a paper supply port to a paper discharge port. The plurality of the feed roller sets are arranged along the feeding path to be spaced apart from each other. When one side of an original document is scanned and when both sides of an original document are scanned, the plurality of the feed roller sets nip the original document to feed the original document along the feeding path. In this case, the plurality of the feed roller sets are all involved in feeding the original document.

Abstract: A document feeding route is provided in an automatic document feeder, and a feeder cover is provided on an upper portion of the automatic feeder and arranged to open and close an upstream half route of the document feeding route by being movable in a pivoting fashion. A plurality of pairs of drive rollers and idler rollers are provided in a downstream half route to feed a document toward a document ejection port. A jam clearance mechanism arranged to move the idler rollers or the drive rollers in a direction toward releasing a nipped state is arranged to face the downstream half route. The jam clearance mechanism includes a pair of cam frames and releasing bodies. The cam frames undergo a sliding displacement in a direction along which the pairs of idler rollers and drive rollers are arranged in coordination with opening and closing of the feeder cover. The releasing bodies move back and forth in coordination with the sliding movement of the cam frames.

Abstract: In an image scanning apparatus, a carriage includes a slide block arranged to be guided by a guide rail, and a carriage main body arranged to be mounted onto the slide block. The slide block is mounted on the guide rail in either a standard position or an adjusting position. When the slide block being is in the standard position, the carriage main body is positioned relative to the slide block. When the slide block is in the adjusting position, the angle of the carriage main body can be adjusted relative to the guide rail by swinging the carriage main body relative to the slide block upon a fulcrum pin.

Abstract: An automatic document feeder includes a feeding path and a plurality of feed roller sets. Through the feeding path, an original document is fed in one direction from a paper supply port to a paper discharge port. The plurality of the feed roller sets are arranged along the feeding path to be spaced apart from each other. When one side of an original document is scanned and when both sides of an original document are scanned, the plurality of the feed roller sets nip the original document to feed the original document along the feeding path. In this case, the plurality of the feed roller sets are all involved in feeding the original document.

Abstract: In an image scanning apparatus, a carriage includes a slide block arranged to be guided by a guide rail, and a carriage main body arranged to be mounted onto the slide block. The slide block is mounted on the guide rail in either a standard position or an adjusting position. When the slide block being is in the standard position, the carriage main body is positioned relative to the slide block. When the slide block is in the adjusting position, the angle of the carriage main body can be adjusted relative to the guide rail by swinging the carriage main body relative to the slide block upon a fulcrum pin.

Abstract: A document feeding route is provided in an automatic document feeder, and a feeder cover is provided on an upper portion of the automatic feeder and arranged to open and close an upstream half route of the document feeding route by being movable in a pivoting fashion. A plurality of pairs of drive rollers and idler rollers are provided in a downstream half route to feed a document toward a document ejection port. A jam clearance mechanism arranged to move the idler rollers or the drive rollers in a direction toward releasing a nipped state is arranged to face the downstream half route. The jam clearance mechanism includes a pair of cam frames and releasing bodies. The cam frames undergo a sliding displacement in a direction along which the pairs of idler rollers and drive rollers are arranged in coordination with opening and closing of the feeder cover. The releasing bodies move back and forth in coordination with the sliding movement of the cam frames.