Sheet feeding device and image forming apparatus

Abstract

In a sheet feeding device, when a leading end of a recording sheet is guided to a nip region along a leading end portion of a sheet guide member in contact with a surface of a separation roller, the leading end of the recording sheet slides and moves on surfaces of projected end portions to be guided to the vicinity of the nip region, and the leading end of the recording sheet passes through the nip region quickly. Hence, a sheet feed error is much less likely to occur. Since a distance from recessed end portions to the nip region is longer and the leading end of the recording sheet is in contact with the separation roller for a longer time right after passing the recessed end portions until reaching the nip region, even though a plurality of recording sheets is stacked, the recording sheets are separated one by one by the separation roller, preventing a multi-sheet feed of the sheets.

Description

technical field [0001] The present invention relates to a paper feeding device for feeding paper, and an image forming apparatus including the paper feeding device. Background technique [0002] This type of paper feeding device includes a paper feeding tray on which paper is loaded, a paper feeding roller, and a separation member in contact with the paper feeding roller, and draws the paper from the paper feeding tray to pass through a nip between the paper feeding roller and the separation member, and send it out to the paper conveying path. When a plurality of sheets are drawn out from the sheet feed tray while being overlapped, the sheets are separated and conveyed one by one while passing through the nip between the sheet feed roller and the separating member. [0003] In addition, in Patent Document 1, a guide film is provided in the range from the paper feed tray to the surface of the separation member, and the paper is smoothly guided to the surface of the separatio...

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Problems solved by technology

[0005] However, when the guide film is provided on the surface of the separation member from the paper feed tray as in Patent Document 1, if the guide film becomes long and overlaps the wide range of the surface of the separation member, the distance between the paper and the separation member will be reduced. The contact area of ​​the surface contact is narrowed, and it is easy to cause overlapping feeding of papers that are fed in a state where multiple papers are overlapped

In addition, if the guide film is shortened, the contact area between the paper and the surface of the separation member becomes wider, making it difficult to overlap and convey the paper, but the front end of the curled paper will be hooked by the surface of the separation member, making it difficult to convey the paper. paper feed errors

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