Remove the white border from the photo

Hello,

I am using an iPad connected directly to my DNP printer, and I would like to know how to remove the white border that appears around my photos when printing.

Could you please provide step-by-step instructions on:

1. Where this setting is located (app, printer settings, or iPad settings)

2. How to disable the white border / enable borderless printing

3. Whether this needs to be set before each print job or can be saved as a default

Any screenshots or a short walkthrough would be very helpful.

Thank you in advance for your help.

Best regards,

Luis