Blue light next to the PSC 2400 cartridge

I wonder because I can't find anywhere in the documentation.

I have a PSC 2400 (no network capabilities).

Next to the cartridge is a little blue light which is still active. You can see it on paper when it prints, and you can even see when opening the printer (for example, paper, stuck or when replacing the cartridges).

I wonder what 'blue' light is... Why is that?

It is inside the printer, next to the cartridge and moves with the cartridge. It is not an indicator of some sort.

Thank you!

It's an old printer, but that the light operates as a sensor. Function of the printer, it helps with the process of alignment and remote sensing possibly different types of media/paper.

Tags: HP Printers

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