How to adjust the distance of the print head of a dot matrix printer:
1. Remove the ribbon cassette installed on the print head.
2. Open the printer case and remove the fixing screws of the carriage frame and lift up the end of the frame with the print head adjustment lever.
3. Loosen the fixing nut of the print head adjusting rod (the nut for adjusting rod is installed on the eccentric carriage slide bolt bolt, some printers use screws), and set the print head adjusting rod to the second gear ( Generally thin paper position), insert 4 layers of printing paper (approximately 0.23-0.27mm thick) between the print head and the printing roller, and turn the carriage slider (note that the adjustment lever is always in the second gear) to make the 4 The layer of paper can twitch but has a little friction. At this time, adjust the left, middle, and right positions of the printing roller respectively, and then tighten the fixing nut of the adjusting rod after the uniformity is reached.
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