US 12,252,364 B2
Printing apparatus and conveyance control method
Kenji Hatada, Shiojiri (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Feb. 17, 2023, as Appl. No. 18/171,212.
Claims priority of application No. 2022-024531 (JP), filed on Feb. 21, 2022.
Prior Publication US 2023/0264916 A1, Aug. 24, 2023
Int. Cl. B65H 23/18 (2006.01); B65H 20/02 (2006.01); B65H 23/188 (2006.01)
CPC B65H 23/188 (2013.01) [B65H 20/02 (2013.01); B65H 2513/11 (2013.01); B65H 2801/21 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A printing apparatus comprising:
a conveyance unit configured to convey a medium;
a printing unit configured to perform printing on the medium conveyed by the conveyance unit; and
a control unit configured to control the conveyance unit, wherein
the conveyance unit includes:
a feeding unit configured to feed the medium from a roll wound with the medium in a rolled form,
a conveyance roller pair configured to convey, toward the printing unit, the medium fed by the feeding unit while sandwiching the medium,
a feed driving unit configured to drive the feeding unit into rotation,
a first encoder configured to detect a rotational speed of the feed driving unit, and
a second encoder configured to detect a rotational speed of the feeding unit and
the control unit is configured to execute a feed adjustment operation of adjusting tension of the medium fed from the feeding unit by controlling the feed driving unit such that the control unit executes the feed adjustment operation based on an output of the second encoder in a first period from a start of rotation of the conveyance roller pair until a specified time elapses and such that the control unit executes the feed adjustment operation based on an output of the first encoder in a second period after completion of the first period.