US 12,072,644 B1
Image forming apparatus
Takao Izumi, Yokohama Kanagawa (JP)
Assigned to TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed by TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 20, 2023, as Appl. No. 18/355,558.
Int. Cl. G03G 15/08 (2006.01); G03G 15/00 (2006.01)
CPC G03G 15/0868 (2013.01) [G03G 15/0856 (2013.01); G03G 15/5016 (2013.01); G03G 15/5025 (2013.01); G03G 15/5041 (2013.01); G03G 2215/0187 (2013.01); G03G 2215/066 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image forming apparatus, comprising:
a forming component configured to form a toner image on an image carrier using developer which is contained in a developer container and includes toner and a magnetic carrier;
a supply component configured to supply the toner to the developer container;
a first measurement component configured to measure a density of the toner in the developer contained in the developer container;
a controller configured to control the supply component such that the density measured by the first measurement component approaches a target density;
a second measurement component configured to measure an image density formed by the forming component;
an adjustment component configured to adjust a development contrast potential so that a formation density measured by the second measurement component approaches a predetermined appropriate density with regard to the toner image formed by the forming component under a predetermined condition; and
a changing component configured to change the target density if the adjustment component is not able to adjust the development contrast potential so that the formation density measured by the second measurement component approaches the predetermined appropriate density.