US 12,410,027 B2
Printing apparatus and roll holding device
Itaru Wada, Kanagawa (JP); and Ryo Harigae, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 3, 2023, as Appl. No. 18/178,210.
Claims priority of application No. 2022-043691 (JP), filed on Mar. 18, 2022.
Prior Publication US 2023/0294944 A1, Sep. 21, 2023
Int. Cl. B65H 16/00 (2006.01); B65H 16/02 (2006.01)
CPC B65H 16/028 (2013.01) [B65H 16/005 (2013.01); B65H 2301/4432 (2013.01); B65H 2402/31 (2013.01); B65H 2402/53 (2013.01); B65H 2403/51 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A printing apparatus that performs printing on a sheet drawn out from a roll in which the sheet is rolled up around a core pipe, comprising:
a roll holding unit including a flange and configured to hold the roll;
a core portion extending from one side of the flange along a rotation axis of the roll and configured to be inserted into a hollow portion of the core pipe from an end portion of the core pipe;
a shaft portion extending from the other side of the flange along the rotation axis;
a flange bearing including a bearing and configured to rotatably support the shaft portion by the bearing in a case where the roll holding unit is mounted on the printing apparatus;
a contact member provided to the core portion and configured to be able to be put in contact with an inner wall surrounding the hollow portion of the core pipe; and
a cam member disposed inside the core portion and configured to rotate about the rotation axis between a first position in which the contact member is pressed onto the inner wall and a second position in which the contact member is retracted from the inner wall.