Paper-outputting device for printer and its working method

Abstract

The present invention relates to a printer paper spitting device and operation method. The device comprises a paper cutting mechanism which is arranged at the paper outlet of the printer, a paper spitting mechanism which is arranged at the exit of the paper cutting mechanism and a control circuit which is connected with the control end of the printer and the control end of the paper cutting mechanism. The paper spitting mechanism comprises a shell, a rotating shaft which is arranged at the bottom of the shell and is opposite to the exit of the paper cutting mechanism, a paper guide plate which is arranged between the exit of the paper cutting mechanism and the rotating shaft with one edge fixed on the rotating shaft, a rotating force mechanism which is connected with the rotating shaft, a paper spitting channel which is arranged at one side of the rotating shaft, a sensor which is arranged on the upper end of the paper feeding channel and is used for measuring the position of the paper and a paper spitting transmission unit. The rotating force mechanism can lead the rotating shaft to rotate so as to ensure the paper guide plate to turn downwards. When the rotating force mechanism is stopped, the paper guide plate and the paper feeding channel are in the same plane. The device can effectively prevent the phenomenon of paper jamming of the printer paper spitting device from happening.

Description

technical field [0001] The invention relates to a paper ejecting device of a printer for preventing paper jams in the paper ejecting device and a working method thereof. Background technique [0002] Existing printers that use roll paper often need to be provided with a paper cutting mechanism at the paper outlet of the printer, so that the printed paper and the roll paper in the machine can be cut off after printing is completed. Such as: Chinese patent literature CN2103432 disclosed on May 6, 1992 discloses a kind of paper cutting mechanism that microcomputer is equipped with printer, and this mechanism is to install two guide plates on the base plate, there is the gap that passes recording paper under guide plate, two There is a disc-shaped cutting knife mounted on the knife rest between the guide plates. The elongated knife shaft of the cutting knife is pressed by the pressure knife plate, and the knife rest is connected by a traction rope and dragged by two sheaves. Th...

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Problems solved by technology

[0003] The disadvantage of the above-mentioned prior art is that in actual use, the user often starts to pull the printing paper without waiting for the above-mentioned paper cutting mechanism to act, and even blocks the paper outlet artificially, which causes the printer to jam and affects the quality of the printer. its normal working order

[0005] Its shortcoming is: in order to realize the above-mentioned "printing paper will bulge upwards, causing the upper paper guide plate of the guiding mechanism to turn upwards", the printing paper must have sufficient elasticity

Once the printing paper is too soft or the elasticity of the printing paper is seriously insufficient due to reasons such as high air humidity, it is impossible to realize the "upper paper guide plate turning up", so that the technical problem of printer jamming cannot be solved.

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