How to improve the print quality of needles

1. Add a blank line before the body of the printed document

The first line of text printed with a needle is often distorted, and it appears to be shorter in height than other lines of the same font. In fact, this is mainly due to the fact that the belt of the drive carriage is slack, and the printer causes the gap between the motor shaft of the reel roller and the reel roller shaft to exist before the printer prints the first line of text, resulting in the reeling of the motor shaft when the motor shaft rotates. No synchronization follows the same angle. On older printers, due to the wear of the reels. This gap will be greater, so it is more likely to appear. We only need to add a blank line in front of the text to eliminate such gaps in advance when printing text, thus avoiding the above problems. Of course, we can also preclude this gap by gently rotating the roller a small angle in the direction of rotation of the roller.

2. Set the printer's print mode to one-way printing

Because one-way printing can effectively eliminate the head of the print head, so that the printer before and after the two print can be accurately in the same lateral position, this can effectively avoid the print text appears misplaced or the table vertical lines are not the same phenomenon. The best way is to use the one-way printing function provided by Yu processing software.

3. Using the printer broken needle repair software

After the print head of the dot matrix printer is worn out, its printing effect will be greatly reduced, but usually the middle needle print needle is worn badly. Therefore, we can use some relatively small wear needles, such as 1-8 needles, 17-24 needles for printing work, and other needles in the "broken" state, so that the printed font will be very clear. Some printer break free software also provides "imitation laser printing" function, if fully utilized, the printed font will be more beautiful.

4. Use better quality ribbons

The high-quality ribbon feels smooth, the ink is even and does not touch the hand, while the inferior ribbon has rough feel and friction. During the reverse printing, the print head and the ribbon are moved relative to each other, and the print needle is easily pinched by the rough tape surface so that the print head cannot be properly positioned. At the same time, the ribbon should not be used for too long, and it should not be used after the surface is raised.

5. Clean the print head regularly and add gauge oil to the guide rod

Due to the long-term use of the print head, some oil stains are stuck near the needle exit of the print head, which affects the needle exit of the print head. Therefore, the print head should be cleaned periodically. At the same time, the print head running track should also be lubricated. Otherwise, the print head can't keep up with the speed, which is one of the reasons for text distortion and misalignment.

6. Adjust the distance between the print head and the coil

It is very important to adjust the distance between the print head and the roller. Usually the newly purchased printer can adjust the position of the rod according to the requirements in the specification. When the print pin is worn out, because the print pin is relatively short, the adjustment lever can be adjusted forward one position so that the distance between the print head and the roller is relatively short. However, it should be noted that the distance between the print head and the roller must not be too small. Otherwise, due to the excessive impact force of the print pin, it will cause the print needle to wear too quickly or the print needle to break the needle bending phenomenon, too large will also be due to color The phenomenon of breaking the needle or hanging off the ribbon with a hanging needle can usually be based on the newly purchased ribbon as a test standard. When the printed handwriting is sufficiently clear, the principle is to maximize the distance between the print head and the roller.
Through the combination of the above methods, the printed document will be very beautiful.

Source: IT286