Patent ID: 7046402

Claim:
An image forming apparatus which has an automatic draft feeder for feeding a draft to a draft reading base and which reads an image of the draft and forms the image, said apparatus comprising: an image reading section which includes a first line CCD sensor for reading the draft as a black-and-white image, and second, third, and fourth line CCD sensors for reading the draft as a color image; a first controller which controls and uses said image reading section to read an entire surface of the draft by movement of the draft, when said automatic draft feeder feeds the draft to the draft reading base; a storage section which stores black-and-white image data read by the first line CCD sensor under control by the first controller; a judgment section which judges whether or not the draft is a black-and-white draft from color image data read by the second, third, and fourth line CCD sensors under control by said first controller; and a second controller which controls and moves a reading position of said image reading section and reads the entire surface of the draft fed onto said draft reading base, when the judgment section judges the draft not to be the black-and-white draft, wherein the black-and-white image is formed based on the image data stored in said storage section, when said judgment section judges the draft to be the black-and-white draft, and the color image is formed based on the color image data read by the second, third, and fourth line CCD sensors under control by said second controller, when said judgment section judges the draft not to be the black-and-white draft.