SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS

• Main Authors: ARAKAWA TAKASHI, UCHIDA MARIKO, MORITA TETSUYA
• Format: Patent
• Language: English; Japanese
• Published: 18.06.2020
• Subjects: CINEMATOGRAPHY; CONVEYING; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; HOLOGRAPHY; MAGNETOGRAPHY; PACKING; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; STORING; TRANSPORTING

To provide a sheet feeding apparatus in which a precision of an operation timing of a feeding roller, a pressure plate, and a return claw is improved.SOLUTION: A sheet feeding apparatus mounted on an image forming apparatus 1 includes: a pickup roller 28; a separation roller 29; an MP tray 27 having a pressure plate 38; a return claw 31 for returning a sheet S to an upstream side of the separation roller 29 in a sheet carrying direction; a feeding gear 32 for transmitting a driving force to the pickup roller 28; a sector gear 33 rotated by the driving force from a motor 4; a first cam 34 for transmitting the driving force that displaces the pressure plate 38; a second cam 35 for transmitting the driving force that displaces the return claw 31; and a rotating shaft portion 36 for supporting the sector gear 33, the first cam 34, and the second cam 35, and rotated by a rotation of the sector gear 33.SELECTED DRAWING: Figure 2 【課題】給送ローラと圧板と戻し爪との動作タイミングの精度を向上させたシート給送装置を提供する。【解決手段】画像形成装置１に搭載されるシート給送装置は、ピックアップローラ２８と、分離ローラ２９と、圧板３８を有するＭＰトレイ２７と、シートＳを分離ローラ２９よりシート搬送方向上流側に戻す戻し爪３１と、ピックアップローラ２８に駆動力を伝達する給送ギヤ３２と、モータ４からの駆動力によって回転するセクタギヤ３３と、圧板３８を変位させる駆動力を伝達する第１カム３４と、戻し爪３１を変位させる駆動力を伝達する第２カム３５と、セクタギヤ３３と第１カム３４と第２カム３５とを支持し、セクタギヤ３３の回転によって回転する回転軸部３６を備える。【選択図】図２