On printing single posts from non-single templates

Hello everyone!

I’m doing a website based on Tanzaku theme for WordPress.
This is the blog section: https://enguita.info/cuadernodecampo

I would like to include a print feature for each post, but not for printing the whole blog. Instead, it should link to the single post’s template first (it’s permalink) and then print the single post.
Everything else i already did (templates, print css, etc.), I’m just missing the way to print a the single post’s template instead of the whole page.

Thanks for your time and help. Regards,
Gorka