Secondary printing is mainly a matter of registration. Trademark printing machines have the marks of previous printing scanned by electric eyes. For ordinary trademark printing machines:

When secondary printing is needed, press the secondary key first, and the auto light will light up at the same time.

Debug the sensitivity of the electric eye, and adjust the fine adjustment of the electric eye back and forth. The thinner the light, the brighter the better.

When the electric eye sees the secondary tracking signal, it will change the light back and forth, which can be generated normally.

Note: During the second tracking, the distance between two signal points is consistent with the parameters set by the drawing length on the panel, and the error is positive or negative.

2 mm.