The ornamental design for a hand-held printer, as shown and described.
FIG. 1 is a perspective view of a first embodiment of the invention;
FIGS. 2 through 7 are, respectively, left side, right side, rear, front, top and bottom views of the first embodiment also shown in FIG. 1;
FIG. 8 is a perspective view of a second embodiment of the invention, wherein the design includes contrasting areas, and wherein the contrasting areas are color-contrasting areas, or light and dark areas, or are both color-contrasting and light and dark; and,
FIGS. 9 through 14 are, respectively, left side, right side, rear, front, top and bottom views of the second embodiment also shown in FIG. 8.