The poor printing effect is that we print a line of words, only half printed out, or two lines of words, only printed out a line, and then we open the nozzle cover, we see the recycling tank here will hang ink:



We use photoelectric induction but it does not print, first we look at whether this high pressure is open, that is to say, whether the head cover is covered, the nozzle cover is well, here is a lightning sign, indicating that the head cover is covered, and then the high pressure has started:

If we print here, it can print:

If it doesn’t print with photovoltaics, there are two possibilities. One is that the photoelectric itself is broken, so we’re going to replace the photovoltaic.
If we can’t print with this once:
