Printing device
    2.
    发明授权

    公开(公告)号:US11806993B2

    公开(公告)日:2023-11-07

    申请号:US17448375

    申请日:2021-09-22

    发明人: Hideki Matsunaga

    摘要: A printing device includes a roll paper holder configured to accommodate a first roll paper and a second roll paper and having first and second side walls configured to contact side surfaces of the first roll paper, a remaining amount detecting section having a first projection projecting from the first side wall to detect a remaining amount of the first roll paper accommodated in the roll paper holder, a roll paper guide configured to be installed in the roll paper holder and having a third side wall configured to contact a side surface of the second roll paper when the second roll paper is accommodated in the roll paper holder, and a detection assistance section provided on the roll paper guide and having a second projection projecting from the third side wall in a state of being in contact with the first projection.

    Printing apparatus and conveyance control method thereof

    公开(公告)号:US11458746B2

    公开(公告)日:2022-10-04

    申请号:US17315047

    申请日:2021-05-07

    IPC分类号: B41J11/66 B41J11/42 B41J15/00

    摘要: A printing apparatus includes a feeding unit, a conveyance unit, a cutting unit, and a control unit. The conveyance unit nips the print medium conveyed from the feeding unit by a first roller and a second roller, and conveys the nipped print medium. The cutting unit cuts the print medium. The control unit: (1) performs control to make a command speed of the first roller lower than a command speed of the second roller until a printhead printing reaches near a trailing edge of a printing length after printing has started, (2) performs control to make the command speed of the first roller higher than the command speed of the second roller when the printing has reached near the trailing edge of the printing length, and (3) subsequently controls the cutting unit configured to cut the print medium.

    Printing device and control method of a printing device

    公开(公告)号:US10399368B2

    公开(公告)日:2019-09-03

    申请号:US15467547

    申请日:2017-03-23

    发明人: Masahiro Kawajiri

    IPC分类号: B41J15/00

    摘要: A printing device reduces the load on the reel driver that drives a delivery reel. A controller drives a reel driver to turn at multiple drive speeds, including a minimum speed at which the circumferential speed of a media roll of the largest diameter is equal to, and a maximum speed at which the circumferential speed of a media roll of the smallest diameter is equal to, the conveyance speed of the media conveyor. When the amount of slack detected by a slack detector goes from between a first threshold and a second threshold that is less than the first threshold, to an amount of slack less than the first threshold, the controller changes the drive speed to one higher speed if the reel driver is not turning at the maximum speed, and stops the reel driver if the reel driver is turning at the maximum speed.

    Conveyance apparatus of web print medium

    公开(公告)号:US10189286B2

    公开(公告)日:2019-01-29

    申请号:US15443022

    申请日:2017-02-27

    发明人: Kazuyuki Aoki

    摘要: A conveyance apparatus includes a conveyance roller, a conveyance motor, a back tension roller, a conveyance speed detector, a brake, and a controller. The controller is configured to: based on a conveyance speed of a web detected by the conveyance speed detector, control a value of a drive control parameter of the conveyance motor such that the conveyance speed of the web is equal to a target speed; and, based on an output torque of the conveyance motor corresponding to the value of the drive control parameter, adjust a braking force of the brake applied to the back tension roller which applies a tension to the web such that the tension of the web is equal to a target tension.