Sheet feeding device and image forming device having said sheet feeding device

Abstract

At the lower end of a sheet-supporting surface (12), there is provided a fixed separation plate (15) from and into the upper surface of which a separating device (31) elongated in the sheet feed direction can protrude and retract. On either side thereof, there are provided first movable separation plates (32a,32b) that can be inclined below the fixed separation plate (15). Stopper members (60) are urged by an urging spring (65) so as to pivot to a position below the supper surfaces of the first movable separation plates (32a,32b). When a pivoting operation lever (70a) is rotated, an operation arm (64) is pressed by a cam (67) mounted to an operation shaft (66) through an operating portion, a second link (68), and a first link (69) to upwardly rotate the stopper members (60), raising the lower edges of the stacked sheets (P) above the upper surfaces of the separation plates (32a,b) to maintain the stacked set state. <IMAGE>

Description

technical field [0001] The present invention relates to a paper feeding device and an image forming device having the same. Background technique [0002] Recently, image forming apparatuses such as laser printers, color inkjet printers, facsimile machines, and copiers are provided with a paper feeding device that feeds cut sheets one at a time to an image forming portion of the image forming apparatus. The paper feeding device disclosed in Japanese Patent Application Publication Nos. 2001-106367 and 2002-60068 includes: an inclined tray, a separating plate, and a feeding roller. Stacks of paper are stacked on the tray. The paper feed roller is arranged to face the tray, and the paper can be fed downstream along the paper feed direction by the rotation of the paper feed roller. A separation plate is provided downstream of the tray in the sheet feeding direction. The separation plate has a separation inclined surface whose extending direction forms an obtuse angle with the ...

AI Technical Summary

Problems solved by technology

If the paper slides together in this way, then it is impossible to support the paper in the desired position, to get the paper in the correct relative position, etc.

As a result, the sheets cannot reliably receive the separation action of the high-friction separation elements, which can result in simultaneous two-sheet feeding

This problem also occurs when the stacked sheets have a wide width

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