US Patent 7354210 Label printer

A cutting edge of a movable blade mounted to a cutter holder is inclined at an oblique cross angle. The cutting edge of the movable blade obliquely intersects a roll sheet placed on a cutter plate in its cutting direction. This ensures that the cutting edge cuts the roll sheet sharply. On this regard, this oblique cross angle has an influence on the number of times that the cutting edge is capable of cutting. An appropriate range of the oblique cross angle is 24° and 34°. The oblique cross angle is an angle formed between an upper surface of the cutter plate and the cutting edge in the cutting direction of the movable blade.