US 12,358,748 B2
Medium transport apparatus
Morihiko Yamada, Okaya (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jan. 26, 2022, as Appl. No. 17/649,001.
Claims priority of application No. 2021-011756 (JP), filed on Jan. 28, 2021.
Prior Publication US 2022/0234857 A1, Jul. 28, 2022
Int. Cl. B65H 29/60 (2006.01); B41J 29/13 (2006.01); B65H 5/06 (2006.01)
CPC B65H 29/60 (2013.01) [B41J 29/13 (2013.01); B65H 5/062 (2013.01); B65H 2402/441 (2013.01); B65H 2402/45 (2013.01); B65H 2404/1421 (2013.01); B65H 2601/11 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A medium transport apparatus comprising:
an apparatus main body in which a medium is transported;
an outer door;
an inner door disposed inward of the outer door, the inner door being coupled to the apparatus main body and configured to rotate about a rotation axis and switch between an open state and a closed state;
a plurality of rotating bodies configured to be away from each other in the open state and to be in contact with each other and transmit a drive force in the closed state; and
a lock mechanism section that locks the inner door against the apparatus main body to bring the inner door into the closed state and unlocks the inner door from the apparatus main body to bring the inner door into the open state, wherein
the lock mechanism section includes
a counter-engagement portion extending in a first direction,
an engagement portion having an engagement surface configured to change in position between a first posture and a second posture in a second direction intersecting with the first direction and engage with the counter-engagement portion, and
an application member that applies a force to the engagement portion to enable the engagement surface to change in position from the first posture to the second posture,
in a closing operation of the inner door, the engagement surface changes in position from the first posture to the second posture while shifting a position of contact with the counter-engagement portion,
in the closing operation and in the closed state, the engagement surface applies, to the counter-engagement portion, a pull-in force for moving the inner door to a closed position, and
in the closing operation of the inner door the application member overlaps the counter-engagement portion and the engagement surface when viewed along a lock lever rotation axis that is orthogonal to the rotation axis of the inner door.