US 12,258,239 B2
Sheet transport device and image forming apparatus
Yasunobu Goto, Kanagawa (JP); Yoshiki Matsuzaki, Kanagawa (JP); Yoshinori Koike, Kanagawa (JP); Natsumi Nakata, Kanagawa (JP); Nobuhiro Hiroe, Kanagawa (JP); Hirotake Eguchi, Kanagawa (JP); Kiyoshi Watanabe, Kanagawa (JP); and Koji Deguchi, Kanagawa (JP)
Assigned to FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Sep. 16, 2022, as Appl. No. 17/946,356.
Claims priority of application No. 2022-053787 (JP), filed on Mar. 29, 2022.
Prior Publication US 2023/0312292 A1, Oct. 5, 2023
Int. Cl. B65H 9/10 (2006.01); B65H 5/06 (2006.01); B65H 85/00 (2006.01)
CPC B65H 9/103 (2013.01) [B65H 5/062 (2013.01); B65H 85/00 (2013.01); B65H 2301/331 (2013.01); B65H 2301/33312 (2013.01); B65H 2404/1441 (2013.01); B65H 2404/1523 (2013.01); B65H 2801/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A sheet transport device, comprising:
two pairs of movable transport rollers capable of transporting a sheet while holding the sheet and capable of moving in an axial direction crossing a transportation direction, the two pairs of movable transport rollers being spaced apart from each other in the transportation direction;
one or more pairs of second transport rollers disposed between the two pairs of movable transport rollers to transport the sheet while holding the sheet;
a plurality of pairs of third transport rollers disposed upstream in the transportation direction from an upstream pair of the two pairs of movable transport rollers disposed upstream in the transportation direction, while being spaced apart from each other, to transport the sheet while holding the sheet; and
a plurality of pairs of transport guides disposed to define sheet transport spaces between the two pairs of movable transport rollers and between the plurality of pairs of third transport rollers,
wherein, when the two pairs of movable transport rollers are to be moved in the axial direction, at least one of the plurality of pairs of third transport rollers is displaced in the axial direction while holding a portion of the transported sheet.