Magnetic Ink Character Recognition System With Angled Read Head
Original Publication Date: 1985-Nov-01
Included in the Prior Art Database: 2005-Feb-19
A single-gap magnetic ink character recognition (MICR) read head mounted at an angle, with respect to the line of code, differentiates between characters which otherwise produce similar output waveforms. The output of a MICR system with a single gap read head is a waveform generated by, and representative of, changes in the amount of magnetic ink that is passing through the sensing area under the gap, with respect to time. Some character pairs generate similar output. Referring to Fig. 1, it is apparent that, except for a slight difference in width, the digits "2" and "5" are vertically inverted images of each other. It is therefore apparent that as the characters move in the direction shown, the amount of magnetic ink passing through the sensing area, and its variation with respect to time, is almost identical.