Printer first prints blank and then is not found by computer

[sisola]

My canon MG5750 is connected with my mac air.

Until yesterday it printed fine, then it started printing as if black ink was low, which is not, as I have changed the cartridge recently and its full (red light on).

I tried resetting the cartridge by switching off and disconnecting printer but it did not work and now I even have the problem that the laptop cannot find the printer (it's connected with USB cable).

 can you help, pelase?

I am running Catalina, and have been for weeks now, while the problem started yesterday

[sisola · Accepted solution]

Just to let everyone now that  hav esolved teh problem by deleting the printer from my omputer (through the preferences dialogue window )and reconnecting it.