The most common and most likely answer to this crossword clue is the 10 letter word COPYHOLDER
I've seen this crossword clue in The Guardian
C
O
P
Y
H
O
L
D
E
R
Buddy explains!

The straight part
We know that "Old-fashioned printer needed this" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case old-fashioned printer needed this = copyholder.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does COPYHOLDER mean?
COPYHOLDER noun- A person who rents land under the copyhold system.
- A device that holds copy in place for typesetting.