In a preferred embodiment, the nature of this product is as a cartridge for housing label media, thermal transfer ribbon, and a mechanical tensioning system primarily useful for use in a thermal printing system.

FIG. 1 is a right, lower, front perspective view of a bottom portion of a printer cartridge embodying our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a right side elevational view thereof.

The broken line representations of various structural elements in FIGS. 1-6 are for the purpose of illustration only, and form no part of the claimed design.