US 12,265,347 B2
Image forming apparatus that performs image corrections based on test images and control method for image forming apparatus
Ken Iguchi, Numazu Shizuoka (JP); Suguru Kurita, Sunto Shizuoka (JP); and Satoshi Araki, Mishima Shizuoka (JP)
Assigned to Toshiba Tec Kabushiki Kaisha, Tokyo (JP)
Filed by Toshiba Tec Kabushiki Kaisha, Tokyo (JP)
Filed on Jul. 6, 2023, as Appl. No. 18/348,037.
Claims priority of application No. 2022-196512 (JP), filed on Dec. 8, 2022.
Prior Publication US 2024/0192624 A1, Jun. 13, 2024
Int. Cl. G03G 15/00 (2006.01); G03G 15/043 (2006.01)
CPC G03G 15/5041 (2013.01) [G03G 15/043 (2013.01); G03G 15/5045 (2013.01); G03G 2215/047 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An image forming apparatus that forms an image with a plurality of colors, comprising:
an image forming device that forms a first test image on a basis of first test image data associated with a plurality of colors and forms a second test image on a basis of second test image data associated with a plurality of colors;
a scanning device that scans the first test image with a first amount of emitted light corresponding to a first input value and scans the second test image with a second amount of emitted light corresponding to a second input value; and
a controller that selectively executes any one of a first correction process, a second correction process, or a third correction process on a basis of an event change, wherein
the first correction process includes a first light amount correction process of correcting the first input value so as to maintain the first amount of emitted light and an image density correction process of correcting density of the image to be formed on a basis of a result of scanning the first test image,
the second correction process includes a second light amount correction process of correcting the second input value so as to maintain the second amount of emitted light and the image density correction process, and
the third correction process includes a color distortion correction process of correcting color distortion of the image to be formed on a basis of a result of scanning the second test image.