The ornamental design for a x-ray digital imaging device, as shown and described.
FIG. 1 is a top, front and side perspective view of an x-ray digital imaging device showing my new design;
FIG. 2 is a top, rear and side perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a right side elevational view thereof; and,
FIG. 7 is an enlarged partial cross-sectional view of a portion defined between arrowheads VII-VII of FIG. 3, in which internal structure thereof is omitted.
The portions of the x-ray digital imaging device in broken lines are shown for illustrative purposes only and form no part of the claimed design; the two-dot chain lines immediately adjacent the shaded areas represent the bounds of the claim.