Cancel a print job with Mac
If the print job is currently printing, cancel it by pressing the Cancel button on the product
Pressing the Cancel button clears the job that the product is currently processing. If
more than one process is running, pressing the Cancel button clears the process that currently
appears on the product control panel.
You can also cancel a print job from a software program or a print queue.
Software program: Typically, a dialog box appears briefly on the computer screen,
allowing you to cancel the print job.
Print queue: Open the print queue by double-clicking the product icon in the dock.
Highlight the print job, and then click Delete.