Paper feeding and paper feeding structure of a scanner

Abstract

The invention discloses a paper feeding and walking structure of a scanner. The paper feeding and walking structure of the scanner comprises a paper twisting bracket and a paper walking bracket, wherein the paper twisting bracket is provided with a paper twisting motor; the paper twisting motor drives a paper pickup and feeding transmission shaft to rotate; the paper walking bracket is provided with a paper walking motor; the paper walking motor drives a first paper walking roller to rotate; the first paper walking roller is meshed with a reduction gear set; the reduction gear set is connectedwith a paper walking rotation shaft through a gear or a transfer rod; a first one-way bearing is arranged in the paper walking rotation shaft; the paper walking rotation shaft drives a paper divisionwheel to rotate; the paper walking bracket is provided with a paper alignment sheet; the paper pickup and feeding transmission shaft is connected with a paper pickup and feeding rotation shaft through a second one-way bearing; the paper pickup and feeding rotation shaft is provided with a paper pickup and feeding wheel corresponding to the paper division wheel; the paper twisting bracket is provided with a paper alignment sheet bracket; the paper alignment sheet bracket is provided with a groove used for clamping a paper alignment sheet; the paper pickup and feeding transmission shaft is provided with a raising mechanism used for raising the paper alignment sheet.

Description

Technical field [0001] The invention relates to the field of scanners, in particular to a paper feeding and feeding structure of the scanner. Background technique [0002] Scanners are usually used as external computer equipment, by capturing images and converting them into digital input devices that the computer can display, edit, store and output. In order to improve the working efficiency of the scanner, the scanning speed of the paper is generally increased greatly, but the too fast scanning speed causes the situation of feeding multiple sheets of paper at a time when the paper is fed, so that the scanned documents will have defects , Which greatly affected the work of the scanner. [0003] In the prior art, a torque limiter is provided on the paper feed roller to control the forward and reverse rotation of the separation wheel. When multiple sheets of paper enter the scanner, the friction between the separation wheel and the upper surface of the paper is greater than that of ...

AI Technical Summary

Problems solved by technology

However, in this structure, the shafts of the paper separation wheel and the paper feed wheel are driven synchronously with the paper feed motor, and the paper separation wheel and the paper feed wheel will rotate at high speed together. Ejects excess paper every time, reducing scan speed

[0004] Then, when the paper enters the scanner, infrared sensors are mostly used to detect whether the paper is skewed when it enters, but this setting can only detect whether it is skewed, and cannot correct it, which will slow down the scanning speed of the entire scanner

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