Wiktionary
minicomic
n. A small comic book, especially one that is home-made and self-published.
Wikipedia
Minicomic
A minicomic is a creator-published comic book, often photocopied and stapled or with a handmade binding. In the United Kingdom and Europe the term " small press comic" is equivalent with minicomic, reserved for those publications measuring A6 (105 mm × 148 mm) or less.