“Can you please tell me the normal pump rotating speed for the blue ink? Cause I have to raise it to up to 2000rpm to make the printing smooth”, asked my client Jack. Um this is a tricky question, because I know Jack has a 9040 black ink Markem Imaje, which should not apply blue in on it.
Let me explain from the start. There two types of 9040 Markem Imaje CIJ printer, one for black ink only, which has a pump in it; the other is for black/blue/white pigment, which doesn’t use a pump but a cylinder to draw the liquids up.
So if we apply blue ink on a 9040 for black ink only, the pump will not be strong enough to create the pulling, so we need to raise up the rotating speed to make the pump work faster. That’s what Jack did.
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L&S CIJ Codification Parts 