In accordance with an embodiment, an image forming apparatus comprises a deflector, a photoconductor, a mirror, a displacement mechanism and a control section. The deflector deflects laser light emitted from a light source to an optical path of each color in a horizontal scanning direction. The photoconductor is located in each optical path and forms an image of each color through development of an electrostatic latent image formed by being exposed by the laser light. The mirror is located in each optical path and reflects the laser light to each corresponding photoconductor. The displacement mechanism is arranged on each mirror and displaces the mirror in order to correct an inclination shift between images of respective colors. The control section corrects a magnification of the image of each color in the horizontal scanning direction according to an inclination correction amount of the image of each color.

By dispersing within an image magnified pixels subjected to magnification correction with the use of pseudorandom numbers, an occurrence of a moire pattern in an image is suppressed.

In accordance with an embodiment, an image forming apparatus comprises a deflector, a photoconductor, a mirror, a displacement mechanism and a control section. The deflector deflects laser light emitted from a light source to an optical path of each color in a horizontal scanning direction. The photoconductor is located in each optical path and forms an image of each color through development of an electrostatic latent image formed by being exposed by the laser light. The mirror is located in each optical path and reflects the laser light to each corresponding photoconductor. The displacement mechanism is arranged on each mirror and displaces the mirror in order to correct an inclination shift between images of respective colors. The control section corrects a magnification of the image of each color in the horizontal scanning direction according to an inclination correction amount of the image of each color.

An image reading apparatus can inhibit image disturbance and density unevenness. The image reading apparatus includes a first conveyance roller pair, a back side image reading unit, a second conveyance roller pair, a front side image reading unit, a third conveyance roller pair, and a control unit. The control unit compares the image data read by the back side image reading unit and the image data read by the front side image reading unit to calculate a relative magnification variation there between, corrects the reading time of the front side image reading unit for each line based on the calculated relative magnification variation, and performs, in accordance with correction of the reading time, image correction of the image data of the front side image reading unit which has been corrected with respect to the reading time.

An image forming apparatus includes a scanner that reads an original document. A cover is moveable between a closed position covering the scanner and an open position not covering the scanner. A processor determines whether the cover is in the open position. The processor determines, from a first image data, a region other than a first document region corresponding to the first surface of the original document. The region other than the first document region is eliminated from first image data. The processor determines, from a second image data, a region other than a second document region corresponding to the second surface of the original document is determined. The region other than the second document region from the second image data is eliminated. A printing image is generated. A printer prints the generated printing image on a single surface of a recording medium.

An image forming apparatus includes an image reading that reads an original document. An image processing unit determines a region other than a first document region corresponding to the first surface of the original document. The region other than the first document region is eliminated from first image data. A region other than a second document region corresponding to the second surface of the original document is determined. The region other than the second document region from the second image data is eliminated. A printing image is generated. An image forming unit prints the printing image generated by the image processing unit on a single surface of a recording medium.

By dispersing within an image magnified pixels subjected to magnification correction with the use of pseudorandom numbers, an occurrence of a moire pattern in an image is suppressed.

An image forming apparatus includes an image reading that reads an original document. An image processing unit determines a region other than a first document region corresponding to the first surface of the original document. The region other than the first document region is eliminated from first image data. A region other than a second document region corresponding to the second surface of the original document is determined. The region other than the second document region from the second image data is eliminated. A printing image is generated. An image forming unit prints the printing image generated by the image processing unit on a single surface of a recording medium.