SHEET FEEDING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME

    公开(公告)号:US20240317519A1

    公开(公告)日:2024-09-26

    申请号:US18605350

    申请日:2024-03-14

    发明人: Akira ISHII

    IPC分类号: B65H3/52 B65H3/06

    摘要: A sheet feeding device includes a cassette storage part, a sheet feed cassette, a pickup roller, a feed roller, a retard roller, a retaining member, and a pushing mechanism. The pushing mechanism pushes the retaining member so that the retard roller is pushed to contact with the feed roller. The pushing mechanism includes a pushing member that contacts and pushes the retaining member, and a biasing member that biases the pushing member. In a plane perpendicular to a rotation shaft of the retard roller, a pushing direction of the pushing member in a push contact position against the retaining member forms an angle of 45 degrees or less, with a straight line connecting the center of the rotation shaft of the retard roller and the center of a rotation shaft of the feed roller.

    Sheet feeding device and image forming apparatus

    公开(公告)号:US12037214B2

    公开(公告)日:2024-07-16

    申请号:US17740172

    申请日:2022-05-09

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

    摘要: A sheet feeding device includes a tray, a feeding member, a conveying member, a separation member, a transmission unit, and a biasing member. The separation member abuts the conveying member and separates a single sheet from sheets fed by the feeding member. The transmission unit includes first and second portions respectively having first and second transmission surfaces. Where the first and second transmission surfaces abut each other, the first portion drives the second portion that drives the feeding member. The biasing member biases either of the first and second portions so that the first and second transmission surfaces move away from each other. The conveying member is driven in a state where the separation member abuts the conveying member and the feeding member abuts the sheet stacked on the tray and is stopped. Thereafter, the first and second transmission surfaces abut each other, and the feeding member is driven.