Incomplete printing on an A4 document
I am having problems printing an A4 document on either an HP Photosmart 6510 or a Brother HL-L23400W laser. All I get is a strip of printing down one side of the document. I have tried resetting the printers which entails deleting them and reinstalling but this doesn't fix it.
As the [problem affects two different printers of different makes it can't be them. It must be a setting common to both computers (I have an iMac and a MacBook Pro and both have the same problem.)
Both printers are set to use Airprint on both computers. Both computers are using High Sierra latest version.
I would add, that the image being printed is complete and can be read on the screen in their entirety on both machines.