The ornamental design for an inkpack, as shown and described.
FIG. 1 is a front, top and right side perspective view of an ink pack showing our new design;
FIG. 2 is a rear, bottom and left side perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a top plan xview thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a right side view thereof;
FIG. 8 is a left side view thereof;
FIG. 9 is an enlarged detail view of the portion indicated by line 9-9 in FIG. 1;
FIG. 10 is an enlarged detail view of the portion indicated by line 10-10 in FIG. 3; and,
FIG. 11 is an enlarged top plan view.
The features shown in broken lines in the drawings depict environmental subject matter only and form no part of the claimed design.
The long dash-dot-long dash broken lines in FIGS. 9 and 10 correspond to the detail indicator lines in FIGS. 1 and 3, respectively, depict environmental subject matter only, and form no part of the claimed design.