IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD

摘要

An image reading device includes a reading member and a skew detector. The reading member reads an image of a passing document at a read position preset in a document transport path. The skew detector detects a skew of the document by selecting one of a first skew detection mode and a second skew detection mode based on information that specifies a method for detecting the skew of the document. The first skew detection mode is a mode in which the skew of the document relative to a transport direction is detected based on an image of a leading-edge section, in the transport direction, read by the reading member. The second skew detection mode is a mode in which the skew of the document relative to the transport direction is detected based on an entire image read by the reading member.

主权项

1. An image reading device comprising:
a reading member that reads an image of a passing document at a read position preset in a document transport path; and a skew detector that detects a skew of the document by selecting one of a first skew detection mode and a second skew detection mode based on information that specifies a method for detecting the skew of the document, the first skew detection mode being a mode in which the skew of the document relative to a transport direction is detected based on an image of a leading-edge section, in the transport direction, read by the reading member, the second skew detection mode being a mode in which the skew of the document relative to the transport direction is detected based on an entire image read by the reading member.