I'm not sure if there is already a question here about this because I can't find anything. But I'm wondering if there are any "safer" ways to print sensitive information without leaving traces on the printer (sensitive data in caches, internal memory, etc.), or at least ways to reduce those traces.
Suppose I need to print some codes, passwords, secret data, or anything sensitive anyway. After you have printed the data, you can put the sheet in a safe place (like a safe), but the printer is going to remain in its usual place where it could be accessed by a malicious actor (I don't think many people lock their printers in a safe).
This might be equivalent to asking how to delete any data left in the memory of a printer, or at least reduce the probability of leaving any sensitive data in it. Maybe printing some more megabytes of documents after the sensitive data will help "overwriting" the memory on the printer? I have no idea.