Check your printer settings: Make sure that the printer is not set to print multiple copies of each document. This setting can often be found in the best mugs printer for sublimation properties or preferences. Check your software settings: Some software programs have an option to print multiple copies of a document. Make sure that this setting is not enabled. Check for stuck paper: Sometimes, a receipt can get stuck in the printer, causing it to print multiple copies. Check for any jammed paper and remove it. Check for multiple print jobs: Some printers will queue up multiple print jobs and print them all at once. Check to see if there are any extra print jobs in the queue and cancel them. Check for malware or virus: Sometimes malware or virus can cause the printer to print multiple copies of a document. Run a scan on your computer to check for any malicious software and remove it if found.