公开(公告)号：USRE48108E1

公开(公告)日：2020-07-21

申请号：US15263064

申请日：2016-09-12

Applicant: RICOH COMPANY, LTD.

Inventor： Emiko Shiraishi ,  Yasuhiko Ogino ,  Reki Nakamura ,  Keigo Nakamura ,  Takahiro Seki

IPC: G03G15/16 ,  G03G13/16 ,  G03G15/00

Abstract: An image forming apparatus includes: an image carrier; a toner image forming unit that forms a toner image on the image carrier; a transfer unit that transfers the toner image on the image carrier to a transfer target having ridges and valleys on a surface thereof; an adjusting unit that adjusts a ratio of A/B, where A is a transfer ratio [%] from the image carrier to a valley portion of the transfer target while B is a transfer ratio [%] from the image carrier to a ridge portion of the transfer target, based on an adjustment input by a user; and a control unit that controls a transfer condition of the transfer unit based on the ratio of A/B adjusted by the adjusting unit.