JP2010206696A5 - Image reading apparatus, control method therefor and image reading system - Google Patents

Claims (5)

Transport means for transporting the document;
An image reading unit that reads an image from a document conveyed by the conveyance unit;
Document length measuring means for measuring the length of the transported document;
Inclination detection means for detecting the inclination of the conveyed document;
Tilt correction means for performing a tilt correction on the document image read by the image reading means according to the tilt detected by the tilt detection means;
In an image reading apparatus having
The image processing apparatus further comprises correction processing execution determination means for determining whether or not the inclination correction is to be performed by the inclination correction means based on the length of the document measured by the document length measurement means.
An image reading apparatus characterized in that. The correction process execution judging means
2. The image reading apparatus according to claim 1, wherein when the length of the document measured by the document length measuring unit exceeds a correction possibility threshold value, it is determined that the inclination correction by the inclination correction unit is not performed. The image reading apparatus
The document has a maximum document length setting unit capable of setting the maximum length of the document that can be conveyed.
When the maximum length set by the document maximum length setting unit exceeds the determination threshold value, the correction process execution determination unit determines whether the inclination correction is to be performed by the inclination correction unit.
If the maximum length set by the document maximum length setting unit is equal to or less than the determination threshold value, the inclination is determined without depending on whether the inclination correction unit performs the inclination correction or not by the correction processing execution determination unit. Execute the inclination correction by the correction unit;
The image reading apparatus according to claim 1 or 2, wherein Transport means for transporting the document;
An image reading unit that reads an image from a document conveyed by the conveyance unit;
Document length measuring means for measuring the length of the transported document;
Inclination detection means for detecting the inclination of the conveyed document;
Tilt correction means for performing a tilt correction on the document image read by the image reading means according to the tilt detected by the tilt detection means;
In a control method of controlling an image reading apparatus having
Measuring the length of the document by the document length measuring means;
A correction process execution determination step of determining whether to execute the inclination correction by the inclination correction unit based on the length of the document measured in the measurement step;
And a control method of the image reading apparatus.   Transport means for transporting the document;
  An image reading unit that reads an image from a document conveyed by the conveyance unit;
  Document length measuring means for measuring the length of the transported document;
  Inclination detection means for detecting the inclination of the conveyed document;
  Tilt correction means for performing a tilt correction on the document image read by the image reading means according to the tilt detected by the tilt detection means;
  Correction processing execution determination means for determining whether to execute the inclination correction by the inclination correction means based on the length of the original measured by the original length measurement means;
  An image reading system characterized by