Document reading apparatus and document reading method

A document reading method comprising:

• a first document reading step of reading a first side of a document while the document is being transported;
• a second document reading step of reading a second side of the document while the document is being transported, thereby producing a image data of the first and second sides of the document;
• a storing step for storing the image data of the first and second sides of the document;
• and
• a controlling step of reading out the image data stored in the memory in such a way that the image data is rearranged in accordance with the predetermined page order of document, regardless of an order of pages of the document stored in the memory.

A computer program product for executing a document reading method comprising:

• a first program code means for reading a first side of a document while the document is being transported;
• a second program code means for reading a second side of the document while the document is being transported, the first and second document reading steps producing image data of the first and second sides of the document;
• a third program code means for storing the image data of the first and second sides of the document;
• and
• a forth program code means for reading out the image data stored in the memory in such a way that the image data is rearranged in accordance with the predetermined page order of document, regardless of an order of pages of the document stored in the memory.

A computer program product having a computer-readable recording medium and a program stored in the recording medium, wherein the program comprises:

• a first program code means for reading a first side of a document while the document is being transported;
• a second program code means for reading a second side of the document while the document is being transported, the first and second document reading steps producing image data of the first and second sides of the document;
• a third program code means for storing the image data of the first and second sides of the document;
• and
• a forth program code means for reading out the image data stored in the memory in such a way that the image data is rearranged in accordance with the predetermined page order of document, regardless of an order of pages of the document stored in the memory.

An image forming apparatus comprising:

• a first document reader for reading a first side of a document while the document is being transported;
• a second document reader for reading a second side of the document while the document is being transported, thereby producing a image data of the first and second sides of the document;
• a memory for storing the image data of the first and second sides of the document;
• and
• a controller for reading out the image data stored in the memory in such a way that the image data is rearranged in accordance with original page order of document, regardless of a document reading completion page order differs from an original page order of document.

A document reading apparatus comprising:

• a first document reader for reading a first side of a document while the document is being transported;
• a second document reader for reading a second side of the document while the document is being transported, thereby producing a image data of the first and second sides of the document;
• a memory for storing the image data of the first and second sides of the document;
• and
• a controller for reading out the image data stored in the memory in such a way that the image data is rearranged in accordance with the predetermined page order of document from the memory, regardless of an order of pages of the document stored in the memory.