The ornamental design for a printer, as shown and described.
FIG. 1 is a top, front, left perspective view of a printer in accordance with our new design;
FIG. 2 is a front elevational view of the printer shown in FIG. 1;
FIG. 3 is a rear elevational view of the printer shown in FIG. 1;
FIG. 4 is a left-side elevational view of the printer shown in FIG. 1;
FIG. 5 is a right-side elevational view of the printer shown in FIG. 1;
FIG. 6 is a top plan view of the printer in FIG. 1; and,
FIG. 7 is a bottom plan view of the printer shown in FIG. 1.
The broken lines immediately adjacent the claim, represent the bounds of the claimed design while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.