Line paper rolling wheel of printer

Abstract

The invention discloses a marking roller of a printer that confirms feed accuracy of convey so as to further improve a recorded image quality in high picture image recording cases and reduce making fee. The marking roller of the printer provided by the invention is located in a rear end more closer to a recording paper convey direction compared with the recording print head of the printer for driving a plurality of gear-like rollers to convey the recording paper, including: a roller body formed by cylinder materials made of steel; a metal heat deposited layer formed on a surface of the roller body made of metal materials with 30 to 75 HRB hardness. The thickness of the metal heat deposited layer is 30 to 100 microns.

Description

technical field [0001] The invention relates to a paper discharge roller of a printer, in particular to a paper discharge roller of a printer formed with a metal thermal spray coating with a large friction coefficient. Background technique [0002] In the inkjet printer, different from the recording range where the printing head of the inkjet printer moves back and forth while recording in the direction perpendicular to the conveying direction of the recording paper, the front end and the rear end (upstream and downstream) are respectively provided with the recording paper for conveying the recording range. Feed rollers and eject rollers. The paper discharge roller will drive a plurality of gear-shaped rollers that touch the surface of the recording paper recorded by the printing head of the inkjet printer to convey the recording paper. [0003] The gear-shaped roller is a disc-shaped roller made of a plurality of sharp metals. In order to prevent the friction of multiple s...

AI Technical Summary

Problems solved by technology

At this time, if the conveying state of recording paper is transferred by the paper feed roller and paper ejection roller to the conveying state of recording paper conveyed by only the paper ejection roller, tiny lines will be recorded.

Due to the subtle difference between the conveying characteristics of the paper feed roller and the conveying characteristics of the paper ejection function, it will cause subtle and sudden changes in the conveying speed

[0005] However, like the paper discharge roller described in the above-mentioned Japanese patent, in the paper discharge roller combined with a plurality of rubber cylinders or resin rollers, the friction characteristics will be reduced due to deterioration or contamination of the rubber or changes in temperature. The conveying precision of the recording paper makes it difficult to improve the recorded image quality when recording high-quality images as mentioned above, and the combination of the rubber cylinder into the small-diameter shaft member will not only take time, but also increase the production cost, etc. The problem

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