Thermal ribbon cassette suitable for a polymer or wax based transfer ribbon for use in combination with a thermal printing apparatus

Abstract From the Canadian patent

An improved thermal ribbon cassette is detachably mounting to a thermal printing postage meter. The thermal ribbon cassette has an opening, a plurality of posts. Some of which posts are located to each side of the opening a, take-up spool and a supply spool rotatively mounted in the housing, and a thermal ink transfer ribbon supply wrapped around the supply spool and extending to the take-up spool threaded from and between the post and extending through the opening. The opening is located to receive a thermal print head therein such that the transfer ribbon traverses below the print element of the thermal print head. Slots are formed in the respective forward and rear wall a first post, to …