公开(公告)号：US20230375957A1

公开(公告)日：2023-11-23

申请号：US18313667

申请日：2023-05-08

申请人： Oki Electric Industry Co., Ltd.

发明人： Fumitaka OZEKI ,  Hisashi SOGA

IPC分类号： G03G15/08

CPC分类号： G03G15/0844 ,  G03G15/0887

摘要： An image formation apparatus according to an embodiment may include: an image formation section to form an image with a developer; an entire area printing rate calculator configured to calculate an entire area printing rate, which is, a printing rate of an entirety of an image formation area; a divided area printing rate calculator configured to calculate each divided area printing rate, which is, a printing rate of each of plural divided areas, divided in a main scanning direction, of the image formation area; and a deteriorated developer discarding operation execution section configured, when the entire area printing rate is equal to or lower than an entire area printing rate threshold, to perform a deteriorated developer discarding operation to discard the developer in any one of the divided areas in which the divided area printing rate is equal to or lower than a divided area printing rate threshold thereof.