A postage meter printing apparatus for applying postage indicia to a mailpiece having a cyclically operating drum for feeding the mailpiece through the postage meter. The periphery of the drum has an aperture therein. Structure is provided to maintain the mailpiece against the drum as the mailpiece is...http://www.google.com.au/patents/US4492159?utm_source=gb-gplus-sharePatent US4492159 - Postage printing apparatus having a print head with a replaceable ribbon cartridge
