Bar Code Printing Enhancement
Original Publication Date: 1988-Apr-01
Included in the Prior Art Database: 2005-Feb-15
Improved color uniformity of bar codes printed from a matrix of character segments can be achieved by using an auxiliary, flexible hammer gap filler strip to enlarge the apparent print hammer impact area. Referring to Fig. 1, print band 1 having engraved characters 2 on its surface moves across wear strip 3 on platen 4 behind ribbon 5. Paper forms 6 move vertically between ribbon shields 7 and 8 on one side and paper guide 9, hammer 10, hammer gap filler strip 11 and forms compressor 12 on the opposite side. When hammer 10 is energized, it drives filler strip 11 and forms 6 against ribbon 5 and character 2 on band 1 to produce an inked image.