Lift type pickup roller mechanism

Abstract

The invention discloses a lift type pickup roller mechanism comprising a pickup roller which is arranged on an upper paper guiding base, wherein the pickup roller is connected at the bottom end of a pickup roller carrier, the pickup roller carrier is placed in a square hole on the upper paper guiding base, the top end of the pickup roller carrier is connected with a pressure spring, the other end of the pressure spring is connected at the bottom end of a pressure plate on the upper paper guiding base in a propping manner, the upper paper guiding base is hinged with a top plate, the top plate is provided with a through groove through which the pickup roller carrier can pass, the side wall of the pickup roller carrier is provided with a support lug, and the support log is placed on the edge of the through groove; and the top plate is also provided with a strip-type plate which can cause the top plate to drive the pickup roller carrier and the pickup roller arranged on the pickup roller carrier to turn over and lift under the driving action of a driving mechanism. The lift type pickup roller mechanism disclosed by the invention can cause the pickup roller to be far away from a print medium when a printer delivers paper, and can prevent the pickup roller from scratching an ink spot on the print medium, thus the printing quality is improved; and the lift type pickup roller mechanism disclosed by the invention has a simple, reasonable and compact structure, is convenient to mount and is low in cost.

Description

technical field [0001] The invention relates to a lifting type pickup wheel mechanism, which belongs to the field of printer equipment design and manufacture. Background technique [0002] On the printer, in order to increase the paper-pulling force of the printer’s paper-guiding device on the printing medium during the paper-guiding work, the pickup wheel is generally used as its paper-guiding mechanism, but for inkjet printers that output paper from the same paper inlet, The main board inside the printer controls the opening and closing of the nozzle on the printer nozzle to spray ink dots on the printing medium to form the required printing information. When the paper is output after printing, the ink dots on the printing medium are not dry. If the printing medium is directly Through the pickup roller, because the pickup roller has a large contact area with the printing medium, it will inevitably guide the paper and scratch the ink dots on the printing medium, which will ...

AI Technical Summary

Problems solved by technology

[0002] On the printer, in order to increase the paper-pulling force of the printer’s paper-guiding device on the printing medium during the paper-guiding work, the pickup wheel is generally used as its paper-guiding mechanism, but for inkjet printers that output paper from the same paper inlet, The main board inside the printer controls the opening and closing of the nozzle on the printer nozzle to spray ink dots on the printing medium to form the required printing information. When the paper is output after printing, the ink dots on the printing medium are not dry. If the printing medium is directly Through the pickup roller, because the pickup roller has a large contact area with the printing medium, it will inevitably guide the paper and scratch the ink dots on the printing medium, which will affect the printing quality. Sufficient paper pickup force, and the pickup roller mechanism can be lifted under the drive of the drive mechanism when the paper is ejected without scratching the ink

Images