Image processing apparatus
    1.
    发明授权

    公开(公告)号:US12077402B2

    公开(公告)日:2024-09-03

    申请号:US17516285

    申请日:2021-11-01

    摘要: An image processing apparatus includes: a support surface configured to support a sheet, a sheet feeding roller configured to feed the sheet in a conveying direction, a separation member for separating the sheet one by one and positioned downstream of the sheet feeding roller in the conveying direction, and a regulating member displaceable between a first position where the regulating member abuts against a distal end of the sheet supported by the support surface to regulate passage of the sheet in the conveying direction between the sheet feeding roller and the separation member and a second position that is farther from a conveyance path than the first position and that allows passage of the sheet in the conveying direction. The regulating member has a wall surface that abuts against the distal end of the sheet and includes at least one protrusion on the wall surface.

    Document feeder and image forming apparatus

    公开(公告)号:US12043506B2

    公开(公告)日:2024-07-23

    申请号:US17488135

    申请日:2021-09-28

    发明人: Toshiki Nishimura

    摘要: A document feeder constituting an image forming apparatus includes a paper feeder to supply a document to a document transport path, a first transporter to transport the document toward image reading positions, and a second transporter to transport the document toward the document discharging tray while supplying the document to the image reading positions. Furthermore, the document feeder includes a motor provided on the first frame, a first driver provided on the first frame and to transmit driving force generated by the motor to the paper feeder and the first transporter, a second driver provided on the second frame and to transmit the driving force generated by the motor to the second transporter, and a second driver to transmit the driving force generated by the motor to the second transporter, and a relay transmission member to transmit the driving force generated by the motor to the second driver.

    MEDIUM FEED APPARATUS TO PUT SEPARATION ROLLER ON HOLD UNTIL FRONT END OF MEDIUM PASSES SEPARATION PART

    公开(公告)号:US20240067471A1

    公开(公告)日:2024-02-29

    申请号:US18352735

    申请日:2023-07-14

    申请人: PFU LIMITED

    IPC分类号: B65H3/06 B65H3/52 B65H7/12

    摘要: A medium feed apparatus includes a first sensor, a second sensor, a third sensor to detect rotation of the separation roller, and a processor. The processor controls a motor to put the separation roller on hold from when starting the feed of the medium to when the second sensor detects a front end of the medium and generate the drive force from when the second sensor detects the front end of the medium to when the first sensor detects a back end of the medium, and controls the motor to stop the feed roller while generating the drive force if the third sensor detects rotation of the separation roller in the opposite direction to the medium feed direction during feed of the medium.

    Sheet feeding device, image forming apparatus, and control method

    公开(公告)号:US11731846B2

    公开(公告)日:2023-08-22

    申请号:US17188957

    申请日:2021-03-01

    发明人: Masaya Kawarada

    摘要: A sheet feeding device includes a conveyance rotator, a separation rotator, a torque applier, a torque control circuit, and a torque transmission switcher. The conveyance rotator conveys a sheet in a sheet feeding direction. The separation rotator sandwiches the sheet together with the conveyance rotator. The torque applier applies a reverse torque to the separation rotator in a sheet reversing direction to reverse the sheet. The torque control circuit controls the reverse torque applied to the separation rotator to be equal to or less than a given value. The torque transmission switcher switches, between a transmission state and a non-transmission state, a state of a torque transmission path between the torque applier and the separation rotator. The transmission state is a state in which the reverse torque is transmitted. The non-transmission state is a state in which the reverse torque is not transmitted.

    Sheet conveyance device, sheet feeding device, and image forming apparatus

    公开(公告)号:US11697563B2

    公开(公告)日:2023-07-11

    申请号:US17336833

    申请日:2021-06-02

    发明人: Kenji Tomita

    IPC分类号: B65H3/06 B65H5/06 B65H3/52

    摘要: A sheet conveyance device includes a first conveyance member, and a drive transmission mechanism. The first conveyance member is configured to convey a sheet toward a second conveyance member. The drive transmission mechanism is configured to transmit a driving force of a driving source to the first conveyance member. The drive transmission mechanism includes a first drive transmitter and a second drive transmitter disposed coaxially with the first drive transmitter. The driving force is transmitted from the first drive transmitter to the second drive transmitter. The second drive transmitter is rotatable relative to the first drive transmitter within at least a predetermined angular range.

    Sheet feed device
    9.
    发明授权

    公开(公告)号:US11649125B2

    公开(公告)日:2023-05-16

    申请号:US17156736

    申请日:2021-01-25

    发明人: Toshiaki Oshiro

    IPC分类号: B65H3/52 B65H5/06 B65H7/02

    摘要: According to one embodiment, a sheet feed device includes a first roller, a second roller, a torque limiter, a holder, and a driving unit. The first roller conveys a sheet in a first direction while being in contact with a first surface of the sheet. The second roller faces the first roller and is in contact with a second surface which is a back side of the first surface of the sheet in a state of sandwiching the sheet between the second roller and the first roller. The torque limiter imparts an anti-torque to the second roller in order to generate a force on the second surface in a direction opposite to the first direction. The holder rotatably supports the second roller. The driving unit moves the holder and biases the holder toward the first roller.

    Sheet feeding apparatus and image forming apparatus

    公开(公告)号:US11643289B2

    公开(公告)日:2023-05-09

    申请号:US16864347

    申请日:2020-05-01

    发明人: Hiroyuki Nakagawa

    IPC分类号: B65H3/52 B65H3/06

    摘要: A sheet feeding apparatus includes a swing shaft to swingably support a support member, an urging member to urge a rotary separation member toward a rotary feeding member, a frame member including a first support portion to fix a first end portion of the swing shaft and a second support portion to movably support a second end portion of the swing shaft, and an adjustment mechanism having an extended opening formed in the second support portion and a fixing member configured to fix the second end portion of the swing shaft to a frame member through the extended opening. The extended opening is extended in a vertical direction and the second end portion of the swing shaft can be fixed at a plurality of positions which vary in the vertical direction to the second support portion with the fixing member.