I'm going to disagree with everyone above saying it doesn't really matter and instead say you should absolutely write your seed phrase by hand and not use a printer.*
Agreed. Printing a private key (or a seed phrase) increases the scope of possible ways that your key could be stolen.
I would also bring up that it is a best practice to store backups of your seed phrase in multiple mediums of storage. So if you do decide to store one copy that is written on paper, you should store another copy of your seed in some medium of storage, such as an encrypted USB stick or encrypted HDD. This way if your ink does fade, you will hopefully still have access to your other backups.