Hi yuva_12,
Thank you for using the Support Forum. If we are talking about your Phaser 3020 it has a 128 MB memory. There is not an overwrite procedure for the memory as there is on some other Xerox printers. But I can not state that the memory clears entirely after printing. Since I am not sure I would suggest you ask the question to our Security team by submitting a Product Security Information Request to get further information. Alternatively you can contact your support centre for further assistance.
My printer is a Xerox Phaser 3020 wifi/usb. I've read the security docs and the handbook, but I'm still at a loss for what to do. Some printers, it is claimed, store current papers while others do not. Is there a method to clear the memory after printing?
How do you print/create your paper wallets in a secure manner?