DEVICE FOR RECORDING AND CONFIRMING HOLOGRAPH IN SPECIFIC SIGNATURE

摘要

PURPOSE: To accurately record dynamic features of a signature by arranging three groups of linear electrodes on a piezoelectric film in the form of an insertion array. CONSTITUTION: The piezoelectric film 2 against which a stylus 1 is pressed while moved has a single electrode 3 covering its nearly entire reverse surface and plural parallel linear electrodes 4-6 provided on its top surface 7. Those linear electrodes 4-6 are connected mutually in the form of plural insertion array groups, i.e., by every three groups. Therefore, the compression of the film 2 when the stylus 1 is pressed against the electrode 4 causes variation in potential between the electrode 4 and opposite electrode 3 and this variation can be detected as a potential different from the common potential on the electrode between the electrode 3 and adjacent electrode 5. Consequently, dynamic features based upon changes of the speed and direction of a pen or the stylus 1 can accurately be recorded.