Hey there! So, if you're trying to print an invoice straight from Odoo without bothering with downloading that pdf, you’ll need to fiddle around in Odoo’s backend. It's gonna be like setting it up for direct printing, kind of like those pos tickets.

First thing, check your Odoo version – features can be different depending on it. Make sure your printer’s on a server your Odoo instance can access. Direct printing often vibes well with modules like "odoo direct print," assuming it fits your thing, bypassing the download. Now, it does usually involve entering some Python code to bridge the communication between Odoo and your printer. Could get tricky, so be ready to tets things out a bit.

Not a coding account? No worries, you can use automated actions and custom scripts to send documents to your printer directly. Odoo’s documentation or community resources might come in handy - dive into those for some guidance. It's a bit of a setup, but once you get it workin', it's pretty straightforward.

If you’re not cool with coding or server management, you might wanna holla at an Odoo expert or consultant to help sort these custom automations out. 

use window.print in js. In which odoo version your are using ? .In odoo apps some third party apps is there you can choose for preview pdf without download.

i use odoo 13

You can use this paid apps https://apps.odoo.com/apps/modules/13.0/send_report_to_printer/

Hi,

Please use this free module in the odoo apps store: Pdf Report Options

Thanks