US 11,796,938 B2
Transfer device and image forming apparatus
Satoshi Tejima, Kanagawa (JP)
Assigned to FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Aug. 29, 2022, as Appl. No. 17/898,477.
Claims priority of application No. 2022-047575 (JP), filed on Mar. 23, 2022.
Prior Publication US 2023/0305443 A1, Sep. 28, 2023
Int. Cl. G03G 15/16 (2006.01); G03G 15/01 (2006.01)
CPC G03G 15/1605 (2013.01) [G03G 15/0189 (2013.01); G03G 2215/0158 (2013.01); G03G 2215/1623 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A transfer device comprising:
an endless member in an endless shape that orbits;
primary transfer members that are respectively arranged on an opposite side of a plurality of image holding bodies disposed side by side in a circumference direction of the endless member with the endless member interposed between the primary transfer member and the image holding body, and transfer an image held by the image holding body to the endless member;
a secondary transfer member that transfers the image transferred to the endless member to a recording medium;
an applying roll around which the endless member is wound, that is disposed on a downstream side of all the primary transfer members and on an upstream side of the secondary transfer member in the circumference direction, and that urges the endless member from an inner peripheral surface of the endless member to apply tension to the endless member;
an upstream roll around which the endless member is wound, and that is disposed on the downstream side of all the primary transfer members and on an upstream side of the applying roll in the circumference direction;
a contact and detachment member that moves at least some of a plurality of the primary transfer members, and contacts and detaches the endless member and the image holding body to change a posture of the endless member;
a detection member that faces a portion of the endless member between the upstream roll and the applying roll to detect the image transferred to the endless member; and
a positioning mechanism that changes a posture of the detection member according to the change in the posture of the endless member to position the detection member at the endless member.