Automatic double-sided printing mechanism capable of ensuring reverse skew rate

Abstract

The invention provides an automatic double-sided printing mechanism capable of ensuring the reverse skew rate. The automatic double-sided printing mechanism comprises a complete machine main frame, a front paper feeding device, a front and reverse paper path switching device, a reverse paper guiding and correcting device and a reverse paper feeding device, wherein the front paper feeding device, the front and reverse paper path switching device, the reverse paper guiding and correcting device and the reverse paper feeding device are arranged on the complete machine main frame. Paper is conveyed through the front paper feeding device, the moving direction of the paper is changed through the front and reverse paper path switching device, and then the paper on the reverse side is corrected through the reverse paper guiding and correcting device and conveyed to the front paper feeding device through the reverse paper feeding device for reverse printing, and the printed paper is output. The automatic double-sided printing mechanism has the beneficial effects that a correcting plate responsible for automatically correcting the turned-over paper is mounted on a paper path support, and the first-stage reverse paper feeding rubber roller and the second-stage reverse paper feeding rubber roller of a driving roller responsible for paper conveying, in the reverse paper feeding device are also mounted on the paper path support, so that compared with an integral pluggable reverse paper feeding tray, the automatic double-sided printing mechanism has the advantage that the skew rate of reverse printing is greatly reduced.

Description

technical field [0001] The invention belongs to the field of laser printers, in particular to an automatic double-sided printing mechanism that ensures the skew rate of the reverse side. Background technique [0002] With the development of the times, more and more printer products with automatic double-sided printing function have flooded into the market for reasons of cost saving and user-friendly operation. Guaranteed indicators. [0003] The common reverse paper feeding device is a pluggable reverse paper feeding tray relative to the whole machine. A guide for the paper tray, a correction piece for correcting the inclination posture of the paper when it travels, etc. Because the reverse paper feeding rubber roller, guide and correction parts are directly installed on the paper tray, and the paper tray is pluggable relative to the whole machine, that is, the front paper path, so the reverse side of the reverse paper feeding device is skewed. rates are not guaranteed. ...

AI Technical Summary

Problems solved by technology

Because the reverse paper feeding rubber roller, guide and correction parts are directly installed on the paper tray, and the paper tray is pluggable relative to the whole machine, that is, the front paper path, so the reverse side of the reverse paper feeding device is skewed. The rate is not easy to guarantee

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