Multi-edge Unidirectional Cutter
Original Publication Date: 2000-Sep-01
Included in the Prior Art Database: 2003-Jun-20
Many printers and other paper handling equipment have some device to shear the paper. This invention is a method of shearing the paper that extends the cutter life and decreases the probability for paper jams. Fig 1 shows one embodiment of this printer, showing a pair of cutter blades, a method for actuating those blades and a roll of continuous paper. Cutter blade 2 is spring loaded (spring not shown) against rotating blade 1. Rotating blade 1 is driven by a gear train that includes motor 6 and gears 3,4,5, and 7. During printing , rotating blade 1 is positioned such that paper can be fed between the two blades. Fig 2 shows a different view of the cutter in the open or paper feed position. 1 Paper is not shown for clarity of the blade positions. In Fig 2 , paper would be passing from the top of the Fig downward. To cut the paper the motor and gear train turns to rotate the rotating blade in the direction shown by direction arrow 8. In most printers the blade would now be reversed to reposition the rotating blade to the paper feed position. In this invention the blade simple continues forward to complete a 90 degree rotation. . Each time paper is to be cut the rotating blade is simple advanced 90 degrees to cut paper and advance to the next open position.