Scanning device, apparatus and method for image processing

An image processing apparatus comprising:

• a scanning device including
• a first scanning unit having a first line sensor and a first light source that emits a first light beam and is arranged only at one side of the first scanning unit in a main scanning direction, the first scanning unit being arranged to scan a first surface of a scan-target medium along the main scanning direction to acquire a first image;
• and
• a second scanning unit having a second line sensor and a second light source that emits a second light beam and is arranged only at one side of the second scanning unit in the main scanning direction, the second scanning unit being arranged to scan a second surface of the scan-target medium along the main scanning direction to acquire a second image,
• wherein the first scanning unit and the second scanning unit are disposed such that the first scanning unit and the second scanning unit face to each other, the first light source and the second light source are arranged at the same side of the main scanning direction, and centers of the first line sensor and the second line sensor are located at the same position in the main scanning direction;
• a supplying unit for supplying the scan-target medium to the scanning device;
• a discharge unit for discharging the scan-target medium from the scanning device;
• and
• an information processing device for processing and for outputting the first image and the second image.

A scanning device comprising:

• a first contact image sensor including a first scanning unit having a first line sensor and a first light source that emits a first light beam and is arranged only at one side of the first scanning unit in a main scanning direction, the first scanning unit being configured to scan a first surface of a scan-target medium along the main scanning direction to acquire a first image;
• a second contact image sensor including a second scanning unit having a second line sensor and a second light source that emits a second light beam and is arranged only at one side of the second scanning unit in the main scanning direction, the second scanning unit being configured to scan a second surface of the scan-target medium along the main scanning direction to acquire a second image, and wherein the first scanning unit and the second scanning unit are disposed such that the first scanning unit and the second scanning unit face to each other, the first light source and the second light source are arranged at the same side of the main scanning direction, and centers of the first line sensor and the second line sensor are located at the same position in the main scanning direction;
• and
• an information processing unit configured to invert one of the first image and the second image by 180 degrees with respect to the main scanning direction.