US 12,228,869 B2
Transfer device and image forming apparatus
Masato Ono, Ebina (JP); Shigeru Fukuda, Ebina (JP); Satoya Sugiura, Ebina (JP); Hiroaki Tanaka, Ebina (JP); Yosuke Kubo, Ebina (JP); Iori Nishimura, Ebina (JP); Daisuke Tanemura, Ebina (JP); Masayuki Seko, Ebina (JP); and Koichi Matsumoto, Ebina (JP)
Assigned to FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Jul. 31, 2023, as Appl. No. 18/362,547.
Claims priority of application No. 2023-024589 (JP), filed on Feb. 20, 2023.
Prior Publication US 2024/0295841 A1, Sep. 5, 2024
Int. Cl. G03G 15/16 (2006.01); G03G 15/00 (2006.01)
CPC G03G 15/162 (2013.01) [G03G 15/5041 (2013.01); G03G 2215/00059 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A transfer device comprising:
an intermediate transfer belt comprising a surface to which a toner image may be transferred and to which solid lubricant particles are attached;
a primary transfer device comprising a primary transfer member configured to perform primary transfer of a toner image formed on a surface of an image holder to the surface of the intermediate transfer belt;
a secondary transfer device comprising a secondary transfer member which contacts the surface of the intermediate transfer belt and which is configured to perform secondary transfer of the toner image transferred to the surface of the intermediate transfer belt to a surface of a recording medium; and
a detection device configured to detect a density of the toner image transferred to the surface of the intermediate transfer belt and which comprises:
a light irradiation unit configured to irradiate the surface of the intermediate transfer belt with light; and
a light receiving unit configured to receive reflected light generated in a case where the light radiated from the light irradiation unit is reflected from the surface of the intermediate transfer belt,
wherein a relationship between a volume-average particle size A (nm) of the solid lubricant particles attached to the surface of the intermediate transfer belt and a wavelength B (nm) of the light radiated from the light irradiation unit satisfies the following Expression 1:

OG Complex Work Unit Math