IMAGE READING DEVICE AND IMAGE FORMING APPARATUS

摘要

An image reading device includes a document container; a document transport path; a reading member that reads an image of a document passing a predetermined read position; a skew correcting member that corrects a skew of the document; a first detecting member that detects the document; a second detecting member that detects the document; a correction switcher that performs switching in accordance with whether or not skew correction is to be executed at the skew correcting member; a skew-amount measurer that measures a skew amount of the document based on a first time period if the skew of the document is to be corrected, and that measures the skew amount based on a second time period if the skew of the document is not to be corrected; and a transport stopping unit that stops transporting of the document if the skew amount exceeds a predetermined skew amount.

主权项

1. An image reading device comprising:
a container that accommodates a document; a transport path along which the document from the container is transported; a reading member that reads an image of the document passing a predetermined read position in the transport path; a skew correcting member that is disposed upstream of the read position in a transport direction of the document, transports the document downstream, and corrects a skew of the document when the document is brought into abutment with the skew correcting member; a first detecting member that is disposed upstream of the skew correcting member and downstream of the container in the transport direction of the document and that detects the document; a second detecting member that is disposed downstream of the skew correcting member and upstream of the read position in the transport direction of the document and that detects the document; a correction switcher that performs switching in accordance with whether or not skew correction is to be executed at the skew correcting member; a skew-amount measurer that measures a skew amount of the document based on a time period from when the skew correcting member starts to rotate to when the second detecting member detects the document if the skew of the document is to be corrected, and that measures the skew amount of the document based on a time period from when the first detecting member detects the document to when the second detecting member detects the document if the skew of the document is not to be corrected; and a transport stopping unit that stops transporting of the document if the skew amount of the document exceeds a predetermined skew amount.