公开(公告)号：US20190286033A1

公开(公告)日：2019-09-19

申请号：US16239974

申请日：2019-01-04

申请人： Hiroki HAMASHOJI ,  Atsushi YOSHIDA ,  Hayato KANO

发明人： Hiroki HAMASHOJI ,  Atsushi YOSHIDA ,  Hayato KANO

IPC分类号： G03G15/00 ,  G03G15/08

摘要： An image forming apparatus includes a memory and circuitry. The memory is configured to store a status of the image forming apparatus and a first detected density value obtained in a first tone correction based on a dither pattern. The circuitry is configured to calculate a difference between the status of the image forming apparatus upon the first tone correction and the status of the image forming apparatus upon a second tone correction following the first tone correction. The circuitry is further configured to calculate a correction value according to the difference in the status of the image forming apparatus, based on the first detected density value and a second detected density value obtained in the second tone correction based on a reference pattern.