SHEET CONVEYANCE DEVICE AND IMAGE FORMING SYSTEM

To provide a sheet conveyance device capable of detecting, by a single optical sensor, an opened/closed state of a cover member and the up-down position of sheets stacked on a sheet stacking tray.SOLUTION: A sheet conveyance device 1 comprises a device body 2, a cover member 3, a sheet stacking tray...

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1. Verfasser: ANDO YOSHIHIRO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a sheet conveyance device capable of detecting, by a single optical sensor, an opened/closed state of a cover member and the up-down position of sheets stacked on a sheet stacking tray.SOLUTION: A sheet conveyance device 1 comprises a device body 2, a cover member 3, a sheet stacking tray 4, and a conveyance control portion 7. The device body 2 comprises: an optical sensor 21 including a light emitting portion 21A and a light receiving portion 21B arranged facing each other at both ends in a sheet width direction Dw of a sheet S stacked on the sheet stacking tray 4.The cover member 3 comprises a stationary rib 31 advancing to/retreating from an optical path of the optical sensor 21 along with opening/closing of the cover member, and a swingable rib 32 advancing to/retreating from the optical path of the optical sensor 21 along with up-and-down movement of the sheet S due to elevating/lowering of the sheet stacking tray 4. The conveying control part 7 detects an opened/closed state of the cover member 3 and an up-down position of the sheet S stacked on the sheet stacking tray 4, based on a receiving amount of light incident on the light receiving part 21B.SELECTED DRAWING: Figure 3 【課題】カバー部材の開閉状態と、シート積載トレイに積載されたシートの上下位置とを、単一の光センサーによって検知することが可能なシート搬送装置を提供する。【解決手段】シート搬送装置1は、装置本体2と、カバー部材3と、シート積載トレイ4と、搬送制御部7と、を備える。装置本体2は、シート積載トレイ4に積載されたシートSのシート幅方向Dwの両端部に対向配置された発光部21A及び受光部21Bを含む光センサー21を有する。カバー部材3は、その開閉に伴って光センサー21の光路に対して進入、退避する固定リブ31と、シート積載トレイ4の昇降によるシートSの上下移動に伴って光センサー21の光路に対して進入、退避する揺動リブ32と、を有する。搬送制御部7は、受光部21Bに入射する光の受光量に基づき、カバー部材3の開閉状態と、シート積載トレイ4に積載されたシートSの上下位置と、を検知する。【選択図】図3