Occasional exposure to a pin printer during pregnancy has no effect on fetal hearing, but prolonged exposure will have an effect on fetal hearing.
After 4 months of pregnancy, the fetus can hear the outside world, but due to the buffer of amniotic fluid can reduce some of the impact of noise, pregnancy, if only occasional or short contact with a pin printer will not generally have an impact on fetal hearing and harm, do not have to worry.
But if the long and frequent contact with the needle printer during pregnancy will jeopardize fetal hearing, the use of the needle printer in the process will produce a certain amount of noise, a long time to stay in a noisy environment will make the pregnant woman emotionally irritable, uneasy, but also affects the fetal hearing system and the development of the nervous system, jeopardizing the development of the fetus.
It is generally recommended that during pregnancy, try not to use the printer for a long time, pay attention to do a good job of pregnancy checkups, to avoid the impact of noise and exposure to harmful substances.