Kyocera Document Solutions Inc.

Yuki Tojo

Masayuki Kakuta

Takuro Murata

Shinji Akamatsu

In a sheet conveyance device, if a sheet has not been detected at a second position when a predetermined time has elapsed since the sheet has been detected at a first position, a separating portion switches operation thereof from a separating operation to a non-separating operation of conveying the sheet from upstream to downstream in a sheet conveyance path, and a sheet feed portion continues a feeding operation. If the sheet has not been detected at the second position by the time a predetermined time has elapsed since the separating portion has started the non-separating operation, the separating portion and the sheet feed portion stop driving, and if the sheet has been detected at the second position by the time, the separating portion switches operation thereof from the non-separating operation to the separating operation, and the sheet feed portion continues the feeding operation.

Sheet conveyance device, document conveyance device, and image forming apparatus

A sheet conveyance device includes a paper feed section, a separation roller, a registration roller pair arranged downstream of the paper feed section, a conveyance roller pair arranged downstream of the registration roller pair, a multi feed sensor arranged between the paper feed section and the registration roller pair, and a document conveyance controller. When an original document arrives at the conveyance roller pair, the document conveyance controller suspends driving of the paper feed section and starts multi feed determination.

Sheet conveyance device, document feeder, image forming apparatus, and multi feed detection method

An image reading apparatus includes a document tray, first and second output trays, first and second conveyance paths, a conveying roller, a switch unit that changes a destination of documents to one of the first and second conveyance paths, a multi-feed determination unit that determines whether the documents are in a multi-fed state (e.g., a state in which a plurality of documents are layered on one another), a reading unit that acquires image data, an image storage unit that stores the image data, a control unit that controls the switch unit, and a multi-feed image storage unit that stores image data acquired by re-reading the multi-fed documents, as multi-feed image data. The control unit assigns information of page order of the documents to the image data stored in the image storage unit.

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Osaka, Japan

Yuki Tojo