FIG. 1 is a front, bottom, left side perspective view of a bottom section of ribbon cartridge, showing my new design;

FIG. 2 is a front elevational view of a bottom section of ribbon cartridge, showing my new design;

FIG. 3 is a rear elevational view of a bottom section of ribbon cartridge, showing my new design;

FIG. 4 is a bottom plan view of a bottom section of ribbon cartridge, showing my new design;

FIG. 5 is a right side elevational view of a bottom section of ribbon cartridge, showing my new design; and,

FIG. 6 is a left side elevational view of a bottom section of ribbon cartridge, showing my new design.