An ornamentaldesign for an ink cartridge holder, as shown and described.
FIG. 1 illustrates a front perspective view of an ink cartridge holder.
FIG. 2 illustrates a front view of the ink cartridge holder.
FIG. 3 illustrates a back view of the ink cartridge holder.
FIG. 4 illustrates a side view of the ink. cartridge holder.
FIG. 5 illustrates an opposite side view of the ink cartridge holder.
FIG. 6 illustrates a top view of the ink cartridge holder.
FIG. 7 illustrates a bottom view of the ink cartridge holder; and,
FIG. 8 illustrates a bottom perspective view of the ink cartridge holder.
The dot-dash broken lines immediately adjacent to the shaded areas depict the bounds of the claimed design, while all evenly spaced broken lines are directed to environment. The broken lines form no part of the claimed design.