The ornamental design for a tonercartridge, as shown and described.
FIG. 1 is a bottom, front and left side perspective view of a toner cartridge showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom view thereof.
The portions of the article in dash-dash broken line indicate unclaimed subject matter that forms no part of the claimed design. The portions of the article in dashed-dotted line are shown for boundaries between the claimed portion and the non-claimed portion and form no part of the claimed design.