Patent ID: 7819599

Claim:
A tape printing apparatus comprising: a cutting device for cutting a long size roll sheet which contains a printing object medium; an adhesive agent layer provided on a non-printing object face of the printing object medium and a peeling layer which covers the adhesive agent layer; wherein the cutting device comprises: a fixed blade having a lower edge which contacts an entire width of one surface of the long size roll sheet; a frame member in which the fixed blade is fixed; an elongated opening portion in the frame member which opposes the fixed blade, and through which the long size roll sheet passes, the opening portion having lower and upper edges and the fixed blade lower edge being adjacent to the opening upper edge; a movable blade configured to slide against the frame member and against the fixed blade; and the movable blade having a cutting edge with a lower cutting tip, the cutting edge contacting another surface of the long size roll sheet when the movable blade moves vertically toward the fixed blade, so that vertical movement of the movable blade cuts the long size roll sheet throughout the entire width; and a movable blade driving device for reciprocating the movable blade on the frame member between a lower home position and an upper cutting position, such that: when the lower cutting tip of the movable blade is in the cutting position, the lower cutting tip of the movable blade is located above the opening upper edge and the fixed blade lower edge, so that accumulated adhesive is positioned off of the movable blade cutting edge; and when the lower cutting tip of the movable blade is in the home position, the lower cutting tip of the movable blade is above the opening lower edge, so that accumulated adhesive on the movable blade remains above the opening lower edge.