The ornamental design for a printingworkroominterior, as shown and described.
FIG. 1 is a front, top and left side perspective view of a printing workroom interior showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is an enlarged view of a portion of FIG. 1 defined by lines 5-5;
FIG. 6 is an enlarged view of a portion of FIG. 2 defined by lines 6-6; and,
FIG. 7 is an enlarged view of a portion of FIG. 6 defined by lines 7-7.
No claim is made to elements of the design shown in evenly-spaced broken lines. The dash-dotted broken lines in the drawings show boundaries of the claimed design as well as boundaries of the enlarged regions.