Image reading apparatus, image reading program, and image reading method

An image reading method for an image reading apparatus which has a sheet feeding device for transporting an original document, an image sensor for receiving the reading signal and reading the original document, and a buffer for temporarily storing image data of the read original document, the image reading method comprising:

• determining whether or not a volume of the image data stored in the buffer is less than a predetermined first threshold value;
• determining whether or not a volume of the image data stored in the buffer is more than a predetermined second threshold value;
• and
• reading the original document
• by accelerating the transport of the original document and maintaining the transport at a predetermined speed, and starting the output of the reading signal after the starting of the transport of the original document, when the volume of the image data is less than the first threshold value, and
• by decelerating and stopping the transport of the original document, and stopping the output of the reading signal along with the stopping of the transport of the original document, when the volume of the image data is more than the second threshold value,
• wherein in the reading of the original document, the reading signal is output for each given transport distance of the original document while the original document is transported.

A recording medium, having a program for causing an image reading apparatus, which has a sheet feeding device for transporting an original document, an image sensor for reading the original document by receiving the reading signal, and a buffer for temporarily storing image data of the read original document, to perform an image reading process, the program causing the image reading apparatus to execute:

• determining whether or not a volume of the image data stored in the buffer is less than a predetermined first threshold value;
• determining whether or not a volume of the image data stored in the buffer is more than a predetermined second threshold value;
• and
• reading the original document
• by accelerating the transport of the original document and maintaining the transport at a predetermined speed, and starting the output of the reading signal after the starting of the transport of the original document, when the volume of the image data is less than the first threshold value, and
• by decelerating and stopping the transport of the original document, and stopping the output of the reading signal along with the stopping of the transport of the original document, when the volume of the image data is more than the second threshold value,
• wherein in the reading of the original document, the reading signal is output for each given transport distance of the original document while the original document is transported.