My MG7550 has streaks of missing text when printing black text.

[Chasbatt]

When printing black text there are streaks of missing ink - horizontal in portrait, vertical in landscape.

A nozzle check pattern is perfect - the PGBK bars are solid and the pattern is complete.

Printing the same files to a laserjet gives perfect text.  Making a copy of this text on the MG7550 gives the same streaky result.

Nozzles have been cleaned and deep cleaned - but the nozzle check pattern does not show any blocked nozzles.

The printer is less than one year old.

What might be the problem?

[Jim356]

I am having the same problem

I have a PIXMA MG5320 that has had almost no use.  I tested it and it prints the MacOS Big Sur 11.1 but shows streaks of missing text - horizontal for portrait.

Is this a cartridge issue? A roller issue?