My Dell C1760nw suddenly started printing black text very light.  I normally print using grayscale to use the black toner and save the color.  I tried switching to color and I got the same result for the black text, but a link in the document was blue and it printed dark, normal.

The black toner level shows as about 66% and the least color toner shows as about 90%.

I suspect that some setting got changed somewhere but I have no idea what it would be or where to look.

The print cue shows the document I just printed as "Sent to Printer".

Also lately most times when I print something the printer keeps running after all pages have printed and I have to turn it off to get it to stop.

I am running OS Name Microsoft Windows 10 Home, Version 10.0.19041 Build 19041, System Model Inspiron 3471, System Type x64-based PC, Processor Intel(R) Core(TM) i5-9400 CPU @ 2.90GHz, 2904 Mhz, 6 Core(s), 6 Logical Processor(s), BIOS Version/Date Dell Inc. 1.4.0, 11/6/2020, SMBIOS Version 3.1

Thanks for your help.