Anti-slip paper feeding roller for printer based on capacitance change

Abstract

The invention relates to the technical field of printing, in particular to an anti-slip paper feeding roller for a printer based on the capacitance change. The anti-slip paper feeding roller comprisesa rotating shaft, an electromagnet is fixedly connected to the inner wall of the bottom of the rotating shaft, a magnetism isolating plate is fixedly connected to the outer side, close to the electromagnet, of the inner wall of the rotating shaft, a conveying roller is movably connected to the outer side of the rotating shaft, uniformly distributed negative plates are fixedly connected to the inner wall of the conveying roller, positive plates symmetrical to the negative plates are fixedly connected to the inner wall of the conveying roller, and springs are fixedly connected to the positions,close to the positions between the negative plates and the positive plates, of the inner wall of the conveying roller. According to the anti-slip paper feeding roller for the printer based on the capacitance change, through cooperative use of the electromagnet and magnetic blocks, when the conveying roller rotates, movable blocks rotating to the bottom can extend outwards under the action of homopolar repulsion of the electromagnet and the magnetic blocks and are connected with paper in a clamped mode, so that the contact area between the paper and the conveying roller is effectively increased, rubber plates are effectively attached to the paper, then the effect of preventing the paper from slipping is achieved, and the practicability is improved.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to an anti-slip paper feed roller for a printer based on capacitance change. Background technique [0002] China's traditional printing industry is developing rapidly but deformed, with low profits, serious information asymmetry, poor communication between buyers and sellers, and acquaintance transactions, etc. Problems are common. , Our traditional printing industry has overcapacity, the national average start time is only 50%, and there is a huge difference between the north and the south. It is foreseeable that the Internetization of the printing industry and even the Internetization of the manufacturing industry will be the trend. The network channels are more convenient and convenient, saving resources, protecting the environment, and saving manpower. [0003] Printers are often used in the current office process, which greatly improves the efficiency of the office and is ver...

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Problems solved by technology

[0003] Printers are often used in the current office process, which greatly improves the efficiency of the office and is very convenient to use. However, the current printers often have some problems during use, which affects the efficiency of use. For example, due to the transfer roller of the printing port The size is fixed, so the paper often slips when it is fed, and the printed paper will break the ink, resulting in poor printing effect and reducing office efficiency

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