Patent ID: 11964479
Assignee: SEIKO EPSON CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A medium feeding device comprising:
a feeding roller that is provided in a first medium feeding path, a second medium feeding path, and a third medium feeding path through which a medium is fed and that feeds a medium downstream by rotating in a forward direction in response to power of a motor;
a nip roller that is provided in the medium feeding paths and that nips a medium in cooperation with the feeding roller and rotates;
a medium detection portion that is provided upstream of the feeding roller in the medium feeding paths and that detects passage of a medium; and
a controller configured to control the motor, wherein
the feeding roller is configured to feed a first medium from the first medium feeding path, feed a second medium from the second medium feeding path, and to manually feed a third medium from the third medium feeding path,
the third medium is first nipped between the feeding roller and the nip roller when being fed, and
in manual feeding of the third medium, based on an increase in a variation value varying in accordance with a drive load of the motor, the controller controls the motor and causes the feeding roller to start a medium feeding operation of the third medium,
when the medium detection portion detects passage of a leading end of a medium, the controller controls the motor to rotate the feeding roller in a reverse direction that is opposite to the forward direction, and
when detecting an increase in the variation value with the feeding roller being rotated in the reverse direction, the controller changes a driving direction of the motor and starts the medium feeding operation.