US 11,940,744 B2
Transfer device and image forming apparatus for switching a transfer roller between pressed and separated states
Kazuyoshi Hagiwara, Kanagawa (JP); Tomoaki Yoshioka, Kanagawa (JP); Yoko Miyamoto, Kanagawa (JP); Kazuki Kishi, Kanagawa (JP); and Toshiaki Baba, Kanagawa (JP)
Assigned to FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Dec. 16, 2021, as Appl. No. 17/552,637.
Claims priority of application No. 2021-137607 (JP), filed on Aug. 25, 2021.
Prior Publication US 2023/0068278 A1, Mar. 2, 2023
Int. Cl. G03G 15/00 (2006.01); G03G 15/01 (2006.01); G03G 15/16 (2006.01); G03G 15/20 (2006.01)
CPC G03G 15/1615 (2013.01) [G03G 15/0136 (2013.01); G03G 15/0189 (2013.01); G03G 15/167 (2013.01); G03G 15/205 (2013.01); G03G 2215/0193 (2013.01); G03G 2215/1695 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A transfer device comprising:
a transfer drum that rotates in conjunction with a fixing roller;
a transfer belt that transfers an image onto a medium while rotating along with the transfer drum in a state where the medium is nipped between the transfer belt and the transfer drum;
a pressing member that is disposed in a space enclosed by the transfer belt; and
a switching unit that moves the pressing member and switches between a pressed state in which the transfer belt is pressed against the transfer drum and a separated state in which the transfer belt is separated from the transfer drum, wherein the switching unit includes a holder portion, a cam portion, and a swing shaft, the holder portion pivoting about the swing shaft based on a movement of the cam portion, wherein
the switching unit switches, as the separated state, between a first separated state and a second separated state in which the transfer belt is separated from the transfer drum by a distance larger than a distance between the transfer belt and the transfer drum in the first separated state.