Thanks for reaching out to the Community. I'm here to lend a hand with your question about printing sales forms in QuickBooks Online.
The output when printing the transactions will depend on the customization of the fields, design, and columns on the sales form template. You can customize it on your own and make sure you're choosing the right one within the transaction.
Here's how to create or edit a custom template:
After configuring the template you need, please make sure to choose the default template within the transaction. I'm adding sample screenshots for your visual reference:
Just in case you need help with the printing alignment of your sales forms, I'm also adding the article I found helpful:
Please let me know if there's anything else I can do for you with regards to printing sales forms. The Community will always have your back.