Paper feeding device, image reading device and image forming device

Abstract

In a standby state wherein a document is set in a document tray and can be supplied when needed, when a start signal is not inputted (S21: NO), a controller determines whether a document regulating plate has been operated or not based on a detection output of a document size detector for detecting a position of the document regulating plate (S31), and when the document regulating plate was operated (S31: YES), the controller lowers the document tray by a predetermined amount and stops it (S32). A lowered amount of the document tray can be arbitrarily set by a user through an operator control panel. With a sheet feeding apparatus, an image reading apparatus and an image forming apparatus constituted as described above, even in a state in which the document is set in the document tray, the set state can be easily canceled by operating the document regulating plate.

Description

Technical field [0001] The present invention relates to a paper feeding device which is installed on image reading devices such as copiers and scanners, or on image forming devices such as printers and facsimiles, for sequentially taking out stacks such as paper storage devices. The paper pages of the placed documents are fed and transported to the conveying channel. The present invention also relates to an image reading device and an image forming device provided with the paper feeding device. Background technique [0002] At present, there is a device that can automatically take out and transport the paper sheets from a document one by one, and then read the document images in sequence, is installed on an image forming device, etc., so that images can be efficiently read and formed based on the Read the image of the image. At the same time, with the development of digital technology, the speed of reading images from files, the speed of converting read data into electronic data,...

AI Technical Summary

Problems solved by technology

[0003] However, for the above-mentioned device capable of setting many sheets, when the sheet containing device is in its lowest stationary standby position, the capacity of the sheets is increased, but after receiving a reading start signal sent by key operation or other similar operations, It takes time to raise the paper conveying device so that the paper accommodating device is in a state of feeding documents to the conveying path

Therefore, there is a problem: the total read time to read the file increases

However, according to this prior art, although it is possible to draw out the document or align it, there is a problem that it is sometimes difficult to add the document and a sensor is required

Images