Image recording apparatus capable of controlling image density
Image forming apparatus
Image forming apparatus having automatic image density adjustment function against dot size variation
Ros beam failure detector Patent #: 6081348
ApplicationNo. 10/101978 filed on 03/21/2002
US Classes:347/133, Having feedback or environmental control347/233, Plural beam scan399/49, Having detection of toner (e.g., patch)399/51, Control of exposure399/72Forming test image
ExaminersPrimary: Lee, Susan S. Y.
Attorney, Agent or Firm
International ClassesG03G 15/00 (20060101)
H04N 1/40 (20060101)
Foreign Application Priority Data2001-03-21 JP
AbstractAn image forming apparatus includes an image bearing member, a latent image writing device that emits a plurality of laser beams, two adjacent laser beams of the plurality of laser beams partially overlapping in a sub-scanning direction, respectively, and forming a reference latent image on a surface of the image bearing member by performing repeated scanning of each laser beam on the surface of the image bearing member, a developing device that develops the reference latent image with toner into a reference toner image, and a detecting device that detects the density of the reference toner image. The quantity of light of each laser beam forming a subsequent latent image is adjusted according to the density of the reference toner image detected by the detecting device.