How to adjust the printer rollers

There are at least 2 axis of the printer, so it must be stated which one to know whether it can be adjusted.

Generally speaking, the printer's paper feed axis, not adjustable, unless like the end-of-life printers, the accuracy of the paper feed affects the printing accuracy, factory limited, basically does not allow after-sales service to adjust, the printer's head tray axis, can be adjusted, the condition must be: measuring the thickness of the tray and the gap between the feed axis gauges, the general printer manufacturers give the after-sales service unit, a variety of models are not the same, from 0.15 ~ 0.5 of 0.05 between the adjustment of the left and right sides of the cam-shaped bushings (which our country called the shaft tile) to determine the accuracy of linear motion. At the same time there must be special adjustment software to make the printer's ink supply system does not work in print mode, otherwise the printer does not print.

If you do not have the above conditions, unless the end-of-life printer to do experiments, you can practice adjustments, feel the feeling.